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Biology library

Welcome to the biology library, unit 1: intro to biology, unit 2: chemistry of life, unit 3: water, acids, and bases, unit 4: properties of carbon, unit 5: macromolecules, unit 6: elements of life, unit 7: energy and enzymes, unit 8: structure of a cell, unit 9: more about cells, unit 10: membranes and transport, unit 11: more about membranes, unit 12: cellular respiration, unit 13: photosynthesis, unit 14: cell signaling, unit 15: cell division, unit 16: classical and molecular genetics, unit 17: dna as the genetic material, unit 18: central dogma (dna to rna to protein), unit 19: gene regulation, unit 20: biotechnology, unit 21: more molecular biology, unit 22: developmental biology, unit 23: bacteria and archaea, unit 24: viruses, unit 25: evolution and the tree of life, unit 26: more about evolution and natural selection, unit 27: history of life on earth, unit 28: ecology, unit 29: more about ecology, unit 30: biodiversity and conservation, unit 31: behavioral biology, unit 32: principles of physiology, unit 33: human biology, unit 34: plant biology, unit 35: ap free response worked examples, unit 36: crash course: biology and ecology, unit 37: meet the biology professional.

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Biology Worksheets, Notes, and Quizzes (PDF and PNG)

Biology Notes, Worksheets, and Quizzes

This is a collection of free biology worksheets, notes, handouts, slides, study guides and quizzes. Most content targets high school, AP biology, genetics, anatomy/physiology, immunology, and biology 101 and 102 in college. There is also biochemistry and physics for biologists. However, some resources are at the grade school and middle school level.

The files are PDF, PNG, JPG, and formats using Google Apps for Google Classroom. Most of the time, these formats are interchangeable. So, if you see something you like, but want a different format, just let us know. Print these resources, make transparencies and slides, etc.

In the interest of quick load time, not all of the images are shown. If you’d rather see them all, just contact us!

Biochemistry

Understanding the Differences Between RNA and DNA - Worksheet

[ Google apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

Enzymes Worksheet

Enzymes Definitions

[ Google Slides worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

  • 20 Amino Acids [ PNG ][ PDF ]
  • Amino Acid Side Chains [ PNG ][ PDF ]
  • Identifying Type of Biological Macromolecules [ Google Slides worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]
  • Disaccharide Examples [ PNG ]
  • Products of Photosynthesis [ JPG ]
  • Anabolism vs Catabolism [ PNG ]
  • 3 Parts of a Nucleotide [ PNG ]
  • Fermentation Definition and Examples [ PNG ]

General and Cell Biology

Major Organelles and Their Function Worksheet

Organelles and Their Functions

Parts of a Plant Cell Worksheet

Parts of a Plant Cell

Anatomy of a Chloroplast Worksheet

Label Parts of a Chloroplast

[ Google Apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ][ answers PNG ]

Anatomy of the Mitochondria Worksheet

Label Parts of a Mitochondria

Animal Cell Worksheet

Label the Animal Cell

[ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Prokaryotes vs Eukaryotes Worksheet

Prokaryotes vs Eukaryotes Worksheet

Stages of the Cell Cycle Worksheet

Steps of the Cell Cycle

Stages of Mitosis Worksheet

Steps of Mitosis

Membrane Transport Worksheet

Membrane Transport Terms and Definitions

Membrane Transport Worksheet 2

Membrane Transport Worksheet #2

The Plasma Membrane Worksheet

The Plasma Membrane

Bacterial Cell Anatomy Worksheet

Label a Bacterial Cell

  • Label a Bacteriophage [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
  • Evidence of Evolution Worksheet [ Google Apps worksheet ][ Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]
  • Evolutionary Processes Worksheet [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
  • Major Receptor Families [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]
  • Label a Bacterial Cell Membrane ( E. coli ) [ Google Apps worksheet ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Anatomy and Physiology

These worksheets are only a portion of the available anatomy and physiology worksheets. Human anatomy and physiology worksheets have their own section.

Anatomy of the Heart Worksheet

Label the Heart

Anatomy of the Eye Worksheet

Label the Eye

[ Google Apps worksheet ][ worksheet PDF ][ answers PDF ][ worksheet PNG ]

Types of Blood Cells Worksheet

Types of Blood Cells

[ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

The Main Anterior Muscles Worksheet

Label the Muscles

[ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Anatomy of the ear worksheet

Label the Ear

[ Google Apps worksheet ][ Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]

Anatomy of the Lungs Worksheet

Label the Lungs

Anatomy of a Kidney Worksheet

Label the Kidney

Anatomy of the Liver Worksheet

Label the Liver

Anatomy of the Large Intestine Worksheet

Label the Large Intestine

Anatomy of the Stomach Worksheet

Label the Stomach

[ Google Apps worksheet ] [Worksheet PDF ][ Worksheet PNG ][ Answers PNG ]

External Nose Anatomy Worksheet

External Nose Anatomy

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answers PNG ]

Anatomy of the Nose Worksheet

Parts of the Nose

The Skeletal System Worksheet

Label Bones of the Skeleton

Anatomy of a Lymph Node - Worksheet

Label the Lymph Node

Anatomy of of the Brain Worksheet

Label the Parts of the Brain

Lobes of the Brain Worksheet

Label the Lobes of the Brain

Anatomical Directions of the Brain Worksheet

Brain Anatomical Sections

Arteries of the Brain Worksheet

Arteries of the Brain

Anatomy of the Pancreas Worksheet

Label the Pancreas

Anatomy of the Spleen Worksheet

Label the Spleen

The Digestive System Worksheet

Label the Digestive System

The Respiratory System Worksheet

Label the Respiratory System

Anatomy of a Neuron Worksheet

Parts of a Neuron

Lip Anatomy Worksheet

Label the Lips

Anatomy of the Skin Worksheet

Label the Skin

The Circulatory System Worksheet

Label the Circulatory System

The Excretory System Worksheet

The Urinary Tract

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answer Key PNG ]

Anatomy of the Bladder Worksheet

The Bladder

  • The Female Reproductive System [ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]

Parts of a Flower Worksheet

Parts of a Flower

Anatomy of an orchid Worksheet

Label the Orchid Plant

[ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ] [Answer Key PNG ]

Parts of an orchid flower Worksheet

Parts of an Orchid Flower

Parts of a monocot seed Worksheet

Parts of a Monocot Seed

Parts of a fern Worksheet

Parts of a Fern

Parts of a tree trunk Worksheet

Parts of a Tree Trunk

Parts of a Tree Worksheet

Parts of a Tree

[ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]

Basic Anatomy of a Mushroom Worksheet

Parts of a Mushroom

Parts of a Shark Worksheet

Label the Shark

Anatomy of a Fish Worksheet

Label the Fish

Parts of a Bird Worksheet

Parts of a Bird

Basic Anatomy of a Bird Worksheet

Bird Anatomy

Life Cycle of a Frog Worksheet

Frog Life Cycle

Basic Mosquito Anatomy Worksheet

Parts of a Mosquito (Insect)

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Bones of the T. rex Skull

[ worksheets PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]

how to find answers for science homework

Holes of the T. rex Skull

  • Label the T. rex Skeleton [ worksheets PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
  • Label Human Teeth [ Worksheet PDF ][ Worksheet Google Apps ][ Worksheet PNG ][ Answer Key PNG ]
  • Monocot vs Dicot Seeds [ worksheet PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
  • Label the Moss [ worksheet PDF ][ worksheet Google Slides ][ worksheet PNG ][ answers PNG ]
  • Diagram of the Human Eye [ JPG ]

Use a completed worksheet as a study guide.

Cells of the Immune System Worksheet

Cells of the Immune System

Immune Cell Functions - Worksheet 1

Immune Cell Functions

[ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG #1][ answers PNG #1][ worksheet PNG #2][ answers PNG #2]

Methods to Study Virus Structures Worksheet

Methods to Study Virus Structures

[ worksheet Google Slide ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Icosahedral Virus Capsids Worksheet

Icosahedral Virus Capsids

Human DNA Viruses Worksheet

Human DNA Viruses

Human RNA Viruses Worksheet

Human RNA Viruses

This is selection of worksheets relating to DNA, RNA, transcription, translation, genetic crosses, plasmid mapping, etc. See the full collection of genetics worksheets if you’re don’t see what you need.

DNA Replication Worksheet

DNA Replication

Types of Mutations Worksheet

Types of Mutations

Monohybrid Cross - Worksheet #1

Monohybrid Cross Worksheet #1

Monohybrid Cross - Worksheet #2

Monohybrid Cross Worksheet #2

Monohybrid Cross - Worksheet #3

Monohybrid Cross Worksheet #3

Monohybrid Cross 4 Multiple Alleles - Worksheet

Monohybrid Cross #4 – Multiple Alleles

  • Monohybrid Cross Worksheet #5: Multiple Alleles [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Monohybrid Cross 6 Sex-Linked Inheritance Worksheet

Monohybrid Cross #6 – Sex-Linked Inheritance

Sex-Linked Inheritance Worksheet

Monohybrid Cross #7 – Sex-Linked Inheritance

Dihybrid Cross - Worksheet #1

Dihybrid Cross Worksheet #1

Dihybrid Cross 2 - Worksheet (8.5 × 11 in)

Dihybrid Cross Worksheet #2

Dihybrid Cross 3 - Student (8.5 × 11 in)

Dihybrid Cross Worksheet #3

Dihybrid Cross 4 - Student (8.5 × 11 in)

Dihybrid Cross Worksheet #4

Dihybrid Cross 5 Epistasis Worksheet

Dihybrid Cross #5 – Epistasis

Dihybrid Cross 6 Epistasis Worksheet

Dihybrid Cross #6 – Epistasis

Incomplete Dominance - Worksheet #1

Incomplete Dominance Worksheet #1

Incomplete Dominance - Worksheet #2

Incomplete Dominance Worksheet #2

Natural Selection Worksheet

Natural Selection Worksheet

Convergent vs. Divergent Evolution Worksheet

Convergent vs Divergent Evolution Worksheet

Pedigree Worksheet 1 Worksheet

Intro to Pedigrees Worksheet #1

Pedigree Worksheet 2 (Student)

Pedigrees/Genealogy Worksheet #2

Pedigree Worksheet 3 (Student)

Pedigrees/Genealogy Worksheet #3 – X-Linked Dominant Traits

Pedigree Worksheet 4 X-Linked Recessive Traits (Student)

Pedigrees/Genealogy Worksheet #4 – X-Linked Recessive Traits

Pedigree Worksheet 5 Autosomal Dominant Traits (Student)

Pedigrees/Genealogy Worksheet #5 – Autosomal Dominant Traits

how to find answers for science homework

Pedigrees/Genealogy Worksheet #6 – Autosomal Recessive Traits

Pedigree Worksheet 7 (Student)

Pedigrees/Genealogy Worksheet #7 – Comprehension Skills

Pedigree Worksheet 8 Worksheet

Pedigrees/Genealogy Worksheet #8 – Identifying Inheritance Patterns

Autosomal vs Sex-Linked Inheritance Worksheet

Autosomal vs Sex-Linked Inheritance

Plasmid Mapping Worksheet 1 (Student)

Plasmid Mapping

  • Genotype vs Phenotype [ PNG ]
  • Genetic Codon Chart [ PNG ][ PDF ]
  • RNA vs DNA [ JPG ]

Use labelled diagrams as study guides.

Ecosystem Worksheet 1

Ecosystems Worksheet

Levels of organization in ecology Worksheet

Levels of Organization (Ecosystem)

Levels of Primary Succession Worksheet

Primary Succession

Levels of Secondary Succession Worksheet

Secondary Succession

Parts of the Insect Worksheet

Label the Insect

Anatomy of a Bee Worksheet

Label the Bee

Life Cycle of a Chicken Worksheet

Chicken Life Cycle (Basic)

Life Cycle of a Bird Worksheet

Bird Life Cycle (Basic)

Frog Life Cycle Worksheet

Butterfly Life Cycle

  • Biotic and Abiotic Factors [ worksheet PDF ][ worksheet Google Apps ][ worksheet PNG ][ answers PNG ]
  • Kingdoms of Life Graphic [ PNG ]
  • Autotroph vs Heterotroph Graphic [ PNG ]
  • Commensalism Definition and Examples [ PNG ]
  • Difference Between Butterflies and Moths [ JPG ]
  • Difference Between Bugs and Insects [ PNG ]

Parasitology

Schistosome Life Cycle Worksheet

Schistosome Life Cycle

Adult Schistosome Worksheet

Schistosome Anatomy

  • Giardia Life Cycle [ worksheet Google Apps ][ worksheet PDF ][ worksheet PNG ][ answers PNG ]

Physical Science for Biology

There is also an entire section devoted to physical science worksheets and study guides.

  • Adhesion vs Cohesion Graphic [ PNG ]
  • What Is Entropy? [ PNG ]
  • Freezing Point of Water [ PNG ]

Biology Labs

  • How to Extract DNA From a Banana [ PNG ]

Biology Word Search Puzzles

  • DNA Replication Word Search
  • Gel Electrophoresis Word Search
  • Citrus Fruits
  • General Biology Word Search Puzzle [ PNG ]
  • Life Science Word Search [ PNG ][ PDF ]
  • Cell Biology Word Search [ PNG ][ PDF ]
  • Amino Acid Word Search [ PNG ][ PDF ]
  • Biome Word Search [ PNG ][ PDF ]
  • Environmental Science Word Search [ PNG ][ PDF ]
  • Photosynthesis Word Search [ PNG ]
  • Human Skeleton Bones Word Search [ PNG ]
  • Dinosaur Word Search [ PNG ][ PDF ]
  • Different Dinosaur Word Search [ PNG ][ PDF ]
  • Wild Cats Word Search [ PNG ][ PDF ]
  • Shark Word Search [ PNG ]
  • Trees Word Search [ PNG ][ PDF ]
  • Flowers Word Search [ PNG ][ PDF ]
  • Butterfly Word Search [ PNG ][ PDF ]
  • Genetics Word Search [ PNG ][ PDF ]

Miscellaneous Biology Notes and Resouces

  • How Long Can Germs Live on Surfaces? [ PNG ]
  • 10 Radioactive Foods [ PNG ]
  • Examples of Organic Compounds [ PNG ]

Biology Notes Terms of Use

You are welcome to print these resources for personal or classroom use. They may be used as handouts or posters. They may  not  be posted elsewhere online, sold, or used on products for sale.

This page doesn’t include all of the assets on the Science Notes site. If there’s a table or worksheet you need but don’t see, just let us know.

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schneider, g. michael, lehninger principles of biochemistry 6th edition nelson, david l.; cox, michael m., life: the science of biology 11th edition sadava, david e.; hillis, david m.; heller, h. craig; hacker, sally d., linear algebra: a modern introduction poole, david, linear algebra and its applications, 4th edition strang, gilbert, linear algebra and its applications (5th edition) lay, david c.; lay, steven r.; mcdonald, judi j., linear algebra for engineers and scientists using matlab (first edition) hardy, kenneth, macroeconomics: principles, problems, & policies 20th edition mcconnell, campbell; brue, stanley; flynn, sean, managerial accounting (15th edition) garrison, ray; noreen, eric, brewer, peter, materials science and engineering: an introduction callister, william d.; rethwisch, david g., mechanics of materials, 7th edition beer, ferdinand p.; johnston jr., e. russell; dewolf, john t.; mazurek, david f., microbiology: an introduction, 11th edition tortora, gerard j.; funke, berdell r.; case, christine l., microbiology: a systems approach 4th edition cowan, marjorie kelly, microbiology: principles and explorations 9th edition black, jacquelyn g.; black, laura, microbiology with diseases by body system (4th edition) bauman, robert w,, phd, microeconomics: principles, applications, and tools (8th edition) o'sullivan, arthur; sheffrin, steven; perez, stephen, microeconomics: principles, problems, & policies, 20th edition mcconnell, campbell; brue, stanley; flynn, sean, molecular biology of the cell 6th edition alberts, bruce; johnson, alexander; lewis, julian; morgan, david; raff, martin; roberts, keith; walter, peter, multivariable calculus, 7th edition stewart, james, munson, young and okiishi's fundamentals of fluid mechanics, binder ready version 8th edition gerhart, philip m.; gerhart, andrew l.; hochstein, john i., numerical methods for engineers chapra, steven; raymond, canale;, numerical methods for engineers and scientists gilat, amos;, organic chemistry, 5th edition smith, janice, organic chemistry (8th edition) wade jr., l. g., organic chemistry 9th edition mcmurry, john e., organic chemistry as a second language, 3e: first semester topics klein, david, organizational behavior (16th edition) robbins, stephen p.; judge, timothy a., physical chemistry: thermodynamics, structure, and change atkins, peter; de paula, julio, physics (10th edition) young, david; stadler, shane, physics for scientists and engineers: a strategic approach with modern physics (3rd edition) knight, randall d., physics for scientists and engineers: a strategic approach with modern physics (4th edition) knight, randall d., physics: principles with applications (7th edition) giancoli, douglas c., physics technology update (4th edition) walker, james s., prealgebra (7th edition) martin-gay, elayn, precalculus (10th edition) sullivan, michael, precalculus (6th edition) lial, margaret l.; hornsby, john; schneider, david i.; daniels, callie, precalculus (6th edition) blitzer blitzer, robert f., precalculus: concepts through functions, a unit circle approach to trigonometry (3rd edition) sullivan iii, michael, precalculus: mathematics for calculus, 7th edition stewart, james; redlin, lothar; watson, saleem, principles of anatomy and physiology 14e with atlas of the skeleton set (14th edition) tortora, gerard j., principles of economics, 7th edition mankiw, n. gregory, principles of heat transfer (activate learning with these new titles from engineering) 8th edition manglik, raj m.; kreith, frank, principles of life for the ap course (2nd edition) hillis, david m.; sadava, david e.; hill, richard w.; price, mary v., principles of macroeconomics 7th edition mankiw, n. gregory, principles of marketing (16th edition) kotler, philip t.; armstrong, gary, principles of microeconomics, 7th edition mankiw, n. gregory, shigley's mechanical engineering design 10th edition budynas, richard; nisbett, keith, statistics (12th edition) mcclave, james t.; sincich, terry t., statistics, 4th edition freedman, david; pisani, robert; purves, roger, statistics for the life sciences (5th edition) samuels, myra l.; witmer, jeffrey a.; schaffner, andrew, statistics: informed decisions using data (4th edition) sullivan iii, michael, statistics: the art and science of learning from data (3rd edition) agresti, alan; franklin, christine a., stats: data and models (3rd edition) de vaux, richard d.; velleman, paul d.; bock, david e., stats modeling the world, 4th edition bock, david e.; velleman, paul f.; de veaux, richard d., system dynamics 3rd edition palm, william iii, thermodynamics: an engineering approach 8th edition cengel, yunus; boles, michael, thinking mathematically (6th edition) blitzer, robert f., thomas' calculus 13th edition thomas jr., george b., trigonometry (10th edition) lial, margaret l.; hornsby, john; schneider, david i.; daniels, callie, trigonometry (11th edition) clone lial, margaret l.; hornsby, john; schneider, david i.; daniels, callie, trigonometry 7th edition mckeague, charles p.; turner, mark d., understanding business, 10th edition nickels, william g.; mchugh, james m.; mchugh, susan m., understanding nutrition 14th edition whitney, eleanor noss; rolfes, sharon rady, university calculus: early transcendentals (3rd edition) hass, joel r.; weir, maurice d.; thomas jr., george b., university physics with modern physics (14th edition) young, hugh d.; freedman, roger a..

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Listen: we know homework isn’t fun, but it is a good way to reinforce the ideas and concepts you’ve learned in class. But what if you’re really struggling with your homework assignments?

If you’ve looked online for a little extra help with your take-home assignments, you’ve probably stumbled across websites claiming to provide the homework help and answers students need to succeed . But can homework help sites really make a difference? And if so, which are the best homework help websites you can use? 

Below, we answer these questions and more about homework help websites–free and paid. We’ll go over: 

  • The basics of homework help websites
  • The cost of homework help websites 
  • The five best homework websites out there 
  • The pros and cons of using these websites for homework help 
  • The line between “learning” and “cheating” when using online homework help 
  • Tips for getting the most out of a homework help website

So let’s get started! 

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The Basics About Homework Help Websites–Free and Paid

Homework help websites are designed to help you complete your homework assignments, plain and simple. 

What Makes a Homework Help Site Worth Using

Most of the best sites allow users to ask questions and then provide an answer (or multiple possible answers) and explanation in seconds. In some instances, you can even send a photo of a particular assignment or problem instead of typing the whole thing out! 

Homework help sites also offer more than just help answering homework questions. Common services provided are Q&A with experts, educational videos, lectures, practice tests and quizzes, learning modules, math solving tools, and proofreading help. Homework help sites can also provide textbook solutions (i.e. answers to problems in tons of different textbooks your school might be using), one-on-one tutoring, and peer-to-peer platforms that allow you to discuss subjects you’re learning about with your fellow students. 

And best of all, nearly all of them offer their services 24/7, including tutoring! 

What You Should Should Look Out For

When it comes to homework help, there are lots–and we mean lots –of scam sites out there willing to prey on desperate students. Before you sign up for any service, make sure you read reviews to ensure you’re working with a legitimate company. 

A word to the wise: the more a company advertises help that veers into the territory of cheating, the more likely it is to be a scam. The best homework help websites are going to help you learn the concepts you’ll need to successfully complete your homework on your own. (We’ll go over the difference between “homework help” and “cheating” a little later!) 

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You don't need a golden piggy bank to use homework help websites. Some provide low or no cost help for students like you!

How Expensive Are the Best Homework Help Websites?

First of all, just because a homework help site costs money doesn’t mean it’s a good service. Likewise, just because a homework help website is free doesn’t mean the help isn’t high quality. To find the best websites, you have to take a close look at the quality and types of information they provide! 

When it comes to paid homework help services, the prices vary pretty widely depending on the amount of services you want to subscribe to. Subscriptions can cost anywhere from $2 to $150 dollars per month, with the most expensive services offering several hours of one-on-one tutoring with a subject expert per month.

The 5 Best Homework Help Websites 

So, what is the best homework help website you can use? The answer is that it depends on what you need help with. 

The best homework help websites are the ones that are reliable and help you learn the material. They don’t just provide answers to homework questions–they actually help you learn the material. 

That’s why we’ve broken down our favorite websites into categories based on who they’re best for . For instance, the best website for people struggling with math might not work for someone who needs a little extra help with science, and vice versa. 

Keep reading to find the best homework help website for you! 

Best Free Homework Help Site: Khan Academy

  • Price: Free!
  • Best for: Practicing tough material 

Not only is Khan Academy free, but it’s full of information and can be personalized to suit your needs. When you set up your account , you choose which courses you need to study, and Khan Academy sets up a personal dashboard of instructional videos, practice exercises, and quizzes –with both correct and incorrect answer explanations–so you can learn at your own pace. 

As an added bonus, it covers more course topics than many other homework help sites, including several AP classes.

Runner Up: Brainly.com offers a free service that allows you to type in questions and get answers and explanations from experts. The downside is that you’re limited to two answers per question and have to watch ads. 

Best Paid Homework Help Site: Chegg

  • Price: $14.95 to $19.95 per month
  • Best for: 24/7 homework assistance  

This service has three main parts . The first is Chegg Study, which includes textbook solutions, Q&A with subject experts, flashcards, video explanations, a math solver, and writing help. The resources are thorough, and reviewers state that Chegg answers homework questions quickly and accurately no matter when you submit them.  

Chegg also offers textbook rentals for students who need access to textbooks outside of their classroom. Finally, Chegg offers Internship and Career Advice for students who are preparing to graduate and may need a little extra help with the transition out of high school. 

Another great feature Chegg provides is a selection of free articles geared towards helping with general life skills, like coping with stress and saving money. Chegg’s learning modules are comprehensive, and they feature solutions to the problems in tons of different textbooks in a wide variety of subjects. 

Runner Up: Bartleby offers basically the same services as Chegg for $14.99 per month. The reason it didn’t rank as the best is based on customer reviews that say user questions aren’t answered quite as quickly on this site as on Chegg. Otherwise, this is also a solid choice!

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Best Site for Math Homework Help: Photomath

  • Price: Free (or $59.99 per year for premium services) 
  • Best for: Explaining solutions to math problems

This site allows you to t ake a picture of a math problem, and instantly pulls up a step-by-step solution, as well as a detailed explanation of the concept. Photomath also includes animated videos that break down mathematical concepts to help you better understand and remember them. 

The basic service is free, but for an additional fee you can get extra study tools and learn additional strategies for solving common math problems.

Runner Up: KhanAcademy offers in-depth tutorials that cover complex math topics for free, but you won’t get the same tailored help (and answers!) that Photomath offers. 

Best Site for English Homework Help: Princeton Review Academic Tutoring

  • Price: $40 to $153 per month, depending on how many hours of tutoring you want 
  • Best for: Comprehensive and personalized reading and writing help 

While sites like Grammarly and Sparknotes help you by either proofreading what you write via an algorithm or providing book summaries, Princeton Review’s tutors provide in-depth help with vocabulary, literature, essay writing and development, proofreading, and reading comprehension. And unlike other services, you’ll have the chance to work with a real person to get help. 

The best part is that you can get on-demand English (and ESL) tutoring from experts 24/7. That means you can get help whenever you need it, even if you’re pulling an all-nighter! 

This is by far the most expensive homework site on this list, so you’ll need to really think about what you need out of a homework help website before you commit. One added benefit is that the subscription covers over 80 other subjects, including AP classes, which can make it a good value if you need lots of help!  

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Best Site for STEM Homework Help: Studypool

  • Best for: Science homework help
  • Price: Varies; you’ll pay for each question you submit

When it comes to science homework help, there aren’t a ton of great resources out there. The best of the bunch is Studypool, and while it has great reviews, there are some downsides as well. 

Let’s start with the good stuff. Studypool offers an interesting twist on the homework help formula. After you create a free account, you can submit your homework help questions, and tutors will submit bids to answer your questions. You’ll be able to select the tutor–and price point–that works for you, then you’ll pay to have your homework question answered. You can also pay a small fee to access notes, lectures, and other documents that top tutors have uploaded. 

The downside to Studypool is that the pricing is not transparent . There’s no way to plan for how much your homework help will cost, especially if you have lots of questions! Additionally, it’s not clear how tutors are selected, so you’ll need to be cautious when you choose who you’d like to answer your homework questions.  

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What Are the Pros and Cons of Using Homework Help Sites?

Homework help websites can be a great resource if you’re struggling in a subject, or even if you just want to make sure that you’re really learning and understanding topics and ideas that you’re interested in. But, there are some possible drawbacks if you don’t use these sites responsibly. 

We’ll go over the good–and the not-so-good–aspects of getting online homework help below. 

3 Pros of Using Homework Help Websites 

First, let’s take a look at the benefits. 

#1: Better Grades Beyond Homework

This is a big one! Getting outside help with your studies can improve your understanding of concepts that you’re learning, which translates into better grades when you take tests or write essays. 

Remember: homework is designed to help reinforce the concepts you learned in class. If you just get easy answers without learning the material behind the problems, you may not have the tools you need to be successful on your class exams…or even standardized tests you’ll need to take for college. 

#2: Convenience

One of the main reasons that online homework help is appealing is because it’s flexible and convenient. You don’t have to go to a specific tutoring center while they’re open or stay after school to speak with your teacher. Instead, you can access helpful resources wherever you can access the internet, whenever you need them.

This is especially true if you tend to study at off hours because of your extracurriculars, work schedule, or family obligations. Sites that offer 24/7 tutoring can give you the extra help you need if you can’t access the free resources that are available at your school. 

#3: Variety

Not everyone learns the same way. Maybe you’re more of a visual learner, but your teacher mostly does lectures. Or maybe you learn best by listening and taking notes, but you’re expected to learn something just from reading the textbook . 

One of the best things about online homework help is that it comes in a variety of forms. The best homework help sites offer resources for all types of learners, including videos, practice activities, and even one-on-one discussions with real-life experts. 

This variety can also be a good thing if you just don’t really resonate with the way a concept is being explained (looking at you, math textbooks!).

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Not so fast. There are cons to homework help websites, too. Get to know them below!

3 Cons of Using Homework Help Websites 

Now, let’s take a look at the drawbacks of online homework help. 

#1: Unreliable Info

This can be a real problem. In addition to all the really good homework help sites, there are a whole lot of disreputable or unreliable sites out there. The fact of the matter is that some homework help sites don’t necessarily hire people who are experts in the subjects they’re talking about. In those cases, you may not be getting the accurate, up-to-date, and thorough information you need.

Additionally, even the great sites may not be able to answer all of your homework questions. This is especially true if the site uses an algorithm or chatbot to help students…or if you’re enrolled in an advanced or college-level course. In these cases, working with your teacher or school-provided tutors are probably your best option. 

#2: No Clarification

This depends on the service you use, of course. But the majority of them provide free or low-cost help through pre-recorded videos. Watching videos or reading info online can definitely help you with your homework… but you can’t ask questions or get immediate feedback if you need it .

#3: Potential For Scamming 

Like we mentioned earlier, there are a lot of homework help websites out there, and lots of them are scams. The review comments we read covered everything from outdated or wrong information, to misleading claims about the help provided, to not allowing people to cancel their service after signing up. 

No matter which site you choose to use, make sure you research and read reviews before you sign up–especially if it’s a paid service! 

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When Does “Help” Become “Cheating”?

Admittedly, whether using homework help websites constitutes cheating is a bit of a grey area. For instance, is it “help” when a friend reads your essay for history class and corrects your grammar, or is it “cheating”? The truth is, not everyone agrees on when “help” crosses the line into “cheating .” When in doubt, it can be a good idea to check with your teacher to see what they think about a particular type of help you want to get. 

That said, a general rule of thumb to keep in mind is to make sure that the assignment you turn in for credit is authentically yours . It needs to demonstrate your own thoughts and your own current abilities. Remember: the point of every homework assignment is to 1) help you learn something, and 2) show what you’ve learned. 

So if a service answers questions or writes essays for you, there’s a good chance using it constitutes cheating. 

Here’s an example that might help clarify the difference for you. Brainstorming essay ideas with others or looking online for inspiration is “help” as long as you write the essay yourself. Having someone read it and give you feedback about what you need to change is also help, provided you’re the one that makes the changes later. 

But copying all or part of an essay you find online or having someone write (or rewrite) the whole thing for you would be “cheating.” The same is true for other subjects. Ultimately, if you’re not generating your own work or your own answers, it’s probably cheating.

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5 Tips for Finding the Best Homework Help Websites for You

Now that you know some of our favorite homework help websites, free and paid, you can start doing some additional research on your own to decide which services might work best for you! Here are some top tips for choosing a homework help website. 

Tip 1: Decide How You Learn Best 

Before you decide which site or sites you’re going to use for homework help, y ou should figure out what kind of learning style works for you the most. Are you a visual learner? Then choose a site that uses lots of videos to help explain concepts. If you know you learn best by actually doing tasks, choose a site that provides lots of practice exercises.

Tip 2: Determine Which Subjects You Need Help With

Just because a homework help site is good overall doesn’t mean that it’s equally good for every subject. If you only need help in math, choose a site that specializes in that area. But if history is where you’re struggling, a site that specializes in math won’t be much help. So make sure to choose a site that you know provides high-quality help in the areas you need it most. 

Tip 3: Decide How Much One-On-One Help You Need 

This is really about cost-effectiveness. If you learn well on your own by reading and watching videos, a free site like Khan Academy is a good choice. But if you need actual tutoring, or to be able to ask questions and get personalized answers from experts, a paid site that provides that kind of service may be a better option.

Tip 4: Set a Budget

If you decide you want to go with a paid homework help website, set a budget first . The prices for sites vary wildly, and the cost to use them can add up quick. 

Tip 5: Read the Reviews

Finally, it’s always a good idea to read actual reviews written by the people using these homework sites. You’ll learn the good, the bad, and the ugly of what the users’ experiences have been. This is especially true if you intend to subscribe to a paid service. You’ll want to make sure that users think it’s worth the price overall!

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What’s Next?

If you want to get good grades on your homework, it’s a good idea to learn how to tackle it strategically. Our expert tips will help you get the most out of each assignment…and boost your grades in the process.

Doing well on homework assignments is just one part of getting good grades. We’ll teach you everything you need to know about getting great grades in high school in this article.

Of course, test grades can make or break your GPA, too. Here are 17 expert tips that’ll help you get the most out of your study prep before you take an exam.

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Ashley Sufflé Robinson has a Ph.D. in 19th Century English Literature. As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams.

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How to Study for a Science Exam

Last Updated: March 21, 2024 Approved

This article was co-authored by Jai Flicker and by wikiHow staff writer, Hunter Rising . Jai Flicker is an Academic Tutor and the CEO and Founder of Lifeworks Learning Center, a San Francisco Bay Area-based business focused on providing tutoring, parental support, test preparation, college essay writing help, and psychoeducational evaluations to help students transform their attitude toward learning. Jai has over 20 years of experience in the education management industry. He holds a BA in Philosophy from the University of California, San Diego. There are 8 references cited in this article, which can be found at the bottom of the page. wikiHow marks an article as reader-approved once it receives enough positive feedback. This article received 39 testimonials and 81% of readers who voted found it helpful, earning it our reader-approved status. This article has been viewed 281,397 times.

It can be a little nerve-wracking when your science teacher announces an exam since you may have to remember formulas, vocabulary, and lab problems. Even though science might seem like a tricky subject to learn, there are a lot of things you can do to remember what you learned in class. We’ll start with some basic guidelines for studying efficiently and then cover techniques you can use to review and memorize everything you need to know!

Things You Should Know

  • Reread your assigned reading and highlight important information. Summarize paragraphs or notes in your own words to understand and memorize them.
  • Work through sample problems or take practice quizzes on the same day you learn about new concepts or formulas to reinforce the information.
  • Work in a quiet, distraction-free space to help you focus. Study in short 45-minute chunks to avoid burnout and take breaks to keep you motivated.

Do some example problems.

Practice using formulas you just learned to commit them to memory.

  • If you don’t have any example problems in a textbook, try searching online for the concept you just learned followed by “example problems” to find some.

Go through some flashcards.

Test how well you know information whenever you have free time.

  • Don’t immediately flip a flashcard if you don’t know it right away. Really try to dig in your memory for the answer before checking it.

Make a concept map from memory.

Connect concepts on a chart to practice recalling test material.

  • This exercise helps you recall information so you’re more likely to remember it during the exam.

Try explaining the material in simple terms.

Pretend you’re teaching the material to see if you understand it.

  • This exercise helps you reframe the material so you get a deeper understanding of it.
  • If you use complex words or jargon in your explanation, go back and try to use simpler language. For example, instead of using “velocity,” you might write, “the speed of an object in a certain direction.”

Remember concepts with mnemonic devices.

Assign tough information to abbreviations and nonsense sentences.

  • For example, you could remember the chemical symbols for the first 9 elements of the periodic table with a sentence like “ H appy He nry Li kes B eer B ut C ould N ot O btain F ood.”

Take practice quizzes.

Try out some test problems to gauge what you need to review.

  • Set a timer for the same amount of time you’ll have to complete the actual exam. That way, you can learn how to manage your time for each question.

Rewrite your notes in your own words.

Summarize the concepts you’ve learned so you retain the information.

  • If you’re taking notes from reading assignments, paraphrase the text rather than copying it word for word.

Read and summarize textbook chapters.

Scan through and review readings to get a deeper understanding.

  • Try to read or scan readings before class if you know the subject you’re covering. That way, you can ask your teacher about confusing topics you encounter.

Highlight important information.

Color-code your notes so you can find the concepts quickly.

  • You can always organize different topics with different colors. For example, you might highlight vocabulary words in yellow and important formulas in orange.
  • Try writing your notes in different colors too. If you know a piece of information is important, try writing it with a red pen instead.

Work in a quiet study space.

Find some comfortable places where you can focus on your studies.

  • Don’t worry or stress out if you can’t find a new spot every day. You can still study effectively at home every day if you’re comfortable there.

Get rid of any distractions.

Turn off your devices so you’re able to concentrate on your work.

  • If you’re working somewhere with a lot of background noise, put on a pair of headphones and play calm or relaxing instrumental music. Try to avoid songs with lyrics since they’re a little more distracting.

Study in 45-minute chunks each day.

Use shorter sessions with breaks to prevent burnout.

  • If you don’t have a big block of time, space a few 15- to 20-minute study sessions throughout the day. For example, you may review your notes during a study hall at school and then again before you go to bed at night.

Go over your notes the same day you take them.

You’ll remember notes better when they’re fresh in your mind.

  • If you wait a day or two before reviewing, you’ll probably forget the actual lecture and have to rely only on your notes.

Form a study group.

Get together with your classmates to review and learn the material.

Start studying when you find out about the exam.

Get a head start early on so you don’t have to cram later.

  • If you have multiple exams throughout the school year, start studying for the next exam 2 days after you take the previous one.

Meet with your teacher for help.

Ask for explanations if you’re still confused by the subject.

  • Your teacher wants to see you succeed, so they’ll be happy to help you out when you reach out to them.

Supercharge Your Studying with this Expert Series

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Expert Q&A

Jai Flicker

  • Listen and participate when you’re in class since you’re more likely to remember the information when you get involved. [16] X Research source Thanks Helpful 1 Not Helpful 0

how to find answers for science homework

  • Never cheat on an exam since you could get in academic trouble and you won’t actually learn the concepts. Thanks Helpful 27 Not Helpful 3
  • While it’s tempting to cram right before a test, you’re more likely to forget the information. Thanks Helpful 19 Not Helpful 3

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  • ↑ https://www.jccmi.edu/science/how-to-study-science/
  • ↑ https://www.usa.edu/blog/study-techniques/
  • ↑ https://www.apa.org/ed/precollege/psychology-teacher-network/introductory-psychology/study-better
  • ↑ Jai Flicker. Academic Tutor. Expert Interview. 20 May 2020.
  • ↑ https://kidshealth.org/en/teens/test-terror.html
  • ↑ https://entertolearn.byu.edu/how-organize-and-conduct-effective-study-groups
  • ↑ https://students.dartmouth.edu/academic-skills/learning-resources/studying-stem/studying-sciences
  • ↑ https://www.science.org/content/article/effective-study-strategies-will-help-you-ace-your-science-courses

About This Article

Jai Flicker

To study for a science exam, start by finding a quiet study area without distractions. Next, set aside 1 hour work intervals, spending 45 minutes studying, then 15 minutes reviewing your work before taking a short break. When studying from your textbook, read the titles, introductory materials, and subheadings first for an overview of the chapters. Additionally, do any practice problems and highlight important vocabulary words. Then, use previous exams, study guides, and class lectures as a way to focus on your work. To learn how to take lecture notes that can easily be turned into study guides, keep reading! Did this summary help you? Yes No

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7 Apps That Can Do Your Homework Much Faster Than You

7 Apps That Will Do Your Homework For You

In the field of educational technology, some apps might be getting too smart.

More and more apps are delivering on-demand homework help to students, who can easily re-purpose the learning tools to obtain not just assistance, but also answers. Whether or not that’s cheating—and how to stop it—is one of the concerns surrounding a new app that can solve math equations with the snap of a camera . While the software has inspired teachers to create real-world homework problems that can’t be automatically solved , that strategy doesn’t hold up to other apps that tap into real-life brains for solutions.

Here’s a look at 7 apps that can do your homework for you, and what they have to say about cheating:

Price : Free Availability : iOS, Android app coming in early 2015

The new, seemingly magic app allows users to take pictures of typed equations, and then outputs a step-by-step solution. As of Wednesday, the app is the number one free app on the App Store. But the biggest issue, one teacher argues , isn’t if students will use the app to cheat, because many will. Rather, it’s about how teachers will adapt. A PhotoMath spokeswoman said educators have welcomed the app with positive reviews, but the software remains “quite controversial.”

“We didn’t develop PhotoMath as a cheating tool. We really wanted kids to learn,” said Tijana Zganec, a sales and marketing associate at tech company MicroBlink, which created PhotoMath. “If you want to cheat, you will find a way to cheat. But if you want to learn, you can use PhotoMath for that.”

Whether you’re a high schooler with eight periods of classes or a college student tackling dozens of credits, there’s one thing you’ve got for sure: a mess of assignments. iHomework can help you keep track of all your work, slicing and dicing it in a variety of ways. Sorting it by due date, week, month, or by course, the app is more organized than a Trapper Keeper. And in integrating data from Questia, you can link your reading material to your assignments so you don’t have to dig through a pile of papers to find the right information.

A scheduling feature can help you keep track of those random bi-weekly Thursday labs, and you can even mark the location of your courses on a map so you don’t end up on the wrong side of campus. And finally, with iCloud syncing, you can access all this information on whatever Apple-compatible device you’re using at the moment — no need to dig for your iPad.

Google Apps for Education

Taking the search giant’s suite of free browser-based apps and sandboxing them so they are safe for school use, Google Apps for Education is an excellent alternative to the mainstream installable productivity software, but this one has a perk that almost school board will love—it’s free. Packaging together favorites like Gmail, Hangouts, Google Docs, Google Sheets, and Google Drive with Classroom, a digital hub for organizing assignments and sending feedback, the goal of this collection is to make learning a more collaborative process.

Though Google Apps for Education is cloud-hosted, the programs can be used offline, ideal for when your student needs to escape the internet and work distraction-free. And since it works on any device, it also helps students avoid buying overly expensive hardware. That means more money for extracurricular activities.

Price: Free, but some homework services require payment Availability: iOS and Android

HwPic is a tutoring service that allows students to take send pictures of their homework to tutors, who will then respond within minutes to your questions with a step-by-step solution. There’s even an option to expedite the answers if a student is in a hurry. HwPic Co-Founder Tiklat Issa said that the app was initially rejected by Apple’s App Store, which believed it would promote cheating, but he successfully argued that just because someone uses the app in a way that it’s not meant to be used doesn’t mean the app should be punished.

Issa added that HwPic prohibits cheating in its terms and conditions. Tutors don’t solve homework that has words like “Quiz” or “Exam,” and they often know if a student is sending a photo during a test if they’ve paid for expedited answers, and if the photo is dim, blurry and taken under a desk. “We’ve minimized cheating,” said Issa. “We haven’t eliminated it. That’s kind of unrealistic.”

Wolfram Alpha

Price : $2.99 Availability : iOS and Android

Wolfram Alpha is similar to PhotoMath, only that it targets older students studying high levels of math and doesn’t support photos. The service also outputs step-by-step solutions to topics as advanced as vector calculus and differential equations, making it a popular tool for college students.

“It’s cheating not doing computer-based math, because we’re cheating students out of real conceptual understanding and an ability to drive much further forward in the math they can do, to cover much more conceptual ground. And in turn, that’s cheating our economies,” said Conrad Wolfram, Wolfram Research’s Director of Strategic Development, in a TEDx Talk . “People talk about the knowledge economy. I think we’re moving forward to what we’re calling the computational knowledge economy.”

Homework Helper

Price: Free Availability: iOS and Android

Chinese Internet search company Baidu launched an app called Homework Helper this year with which students can crowdsource help or answers to homework. Users post a picture or type their homework questions onto online forums, and those who answer the questions can win e-coins that can be used to buy electronics like iPhones and laptops.

The app has logged 5 million downloads, much to the dismay of many some parents who argue that the students spend less time thinking about challenging problems. A Homework Helper staffer admitted to Quartz , “I think this is a kind of cheating.”

Price: Free, but some homework services require payment Availability: iOS

Slader is a crowdsourcing app for high school and college students to post and answer questions in math and science. While students can post original homework for help, many questions in popular textbooks have already been answered on the app, according to Fast Company . An Illinois high school said earlier this year that it suspected students were using the service to cheat on their math homework.

Slader argues that it’s “challenging traditional ideas about math and education,” and said that the ideas behind its app “aren’t a write-off to teachers,” according to its blog . Slader told San Francisco media outlet KQED that it shouldn’t be dismissed as a cheating tool, but rather considered a way for students to access real-time help.

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Free Websites for Question-and-Answer Homework Help Online

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  • M.A., Education, Claremont Graduate University
  • B.A., English, Brigham Young University

Online classes are convenient, but they usually don’t offer the support of a traditional university. If you find yourself wishing you had a tutor to guide you through a difficult math problem or essay question, free websites offer you the ability to ask questions and get answers online. 

Yahoo! Answers

Yahoo! Answers lets users ask questions and receive answers from fellow users. Topics include arts and the humanities, science, and mathematics, and education and reference. Users who provide answers receive points based on their responses. Almost all questions receive a quick answer. Many responders seem to be young, so be prepared for quips along with helpful responses. 

Hippo Campus

HippoCampus delivers videos, animations, and simulations on general education subjects to middle-school and high-school teachers. Students can use the site for homework and exam preparation. Users don't need to register or log in. HippoCampus is powered by The NROC Project, a nonprofit, member-driven group focused on new models of digital content development, distribution, and use.

Answerology

Answerology users can answer each other's questions and form “Question Groups” that track the questions on a homework topic. Questions and answers tend to be more social than academic but would be useful in essays. 

Ask a Librarian

This Library of Congress service lets students ask questions and receive emailed responses from librarians. The site asks users to avoid sending homework questions, though it can be used for research issues. Answers are typically sent within five business days. Some topics offer online chat. A virtual reference shelf also is provided.

Free Math Help

This site, launched in 2002, typically sees more than a million visitors a month during the school year. Everything on the site is free , supported by advertising, though some links take you to fee-based sites.

Ask Philosophers

Hosted by the University of Amherst , this site allows users to ask philosophical questions and receive responses from philosophers. Answers are posted within a few days. The website warns submissions won't be posted if they're unintelligible, vague, clearly scientific, concern a personal problem, or have other issues. You can search to see if your question has already been answered.

Ask a Linguist​

Questions are answered on the website by linguistics students and faculty at Indiana University's Linguistics Department . Responses focus on language and language analysis regarding issues with substantial linguistic content or content of wide interest within the discipline.

Ask a Geologist

Email questions about earth sciences to this site, and United States Geological Survey scientists will respond if your homework question is among the 88 percent answered. Include the word "Question" in the subject line. USGS scientists have responded since 1994 but won't answer test questions, write reports, answer questions with direct financial impacts, recommend products or companies, or identify rocks from photos. 

Go Ask Alice!

Questions to the site, hosted by Columbia University’s health department , are answered by health care professionals, information and research specialists, and writers. Team members have advanced degrees in fields such as public health, health education, medicine, and counseling. The site came online in 1994; 20 years later, more than 4 million people were visiting monthly.

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how to find answers for science homework

Educake: A teacher's guide

November 22, 2022

Elevate learning with EduCake's adaptive platform. Personalize education, track progress, and bridge knowledge gaps effortlessly.

Main, P (2022, November 22). Educake: A teacher's guide. Retrieved from https://www.structural-learning.com/post/educake

What is Educake?

If you're a teacher or parent, you know that revision is essential for keeping students on track and ensuring they achieve their academic goals . But what if revision was fun, easy, and stress-free? That's where Educake comes in.

Educake is an online assessment and revision platform that helps students, aged 11-16, meet the national curriculum of England. Educake offers multiple subject areas, including science, English, geography, history, computer science, physical education, and mathematics .

With Educake, teachers can assign homework and classwork, and then track students' progress using online formative assessment . Students can also access Educake on their iPhone, iPad, and iPod touch, and enjoy it as a homework helper.

The multiple award-winning program, Educake, is being used by over half a million students in the UK. Educake is also being used by multi-academy trust s (MATs) and has extra features built for them.

How Teachers Use Educake

Teachers have long been frustrated with the time to create homework tasks and mark them. Educake has solved this problem by creating a platform that allows teachers to create homework tasks in minutes. This is valuable time that can be used more effectively in other areas of the curriculum .

Educake is an online test maker that uses a database of about 30,000 question specifications mapped to answers. It allows for automatic marking and accepts misspellings. Over 10,000 science questions are available in Educake. Most questions require students to write out one to three-word responses, and some are multiple-choice. 

Another time-saving feature of Educake is the ability to plan and mark homework tasks in seconds. This means that teachers can spend more time teaching and less time marking. This also allows teachers to get a better understanding of the student's learning and to plan more effectively.

Darren Arbon of St Paul's Catholic College, Burgess Hill remarks, “The three best things are the instant feedback for students, the ease of setting tests, and the help and customer support with quick responses to any queries.”

Charlie Tibble at St Wilfrid's, Crawley said, "“Our students like Educake because they can work independently and at their own pace. They get immediate feedback and a chance to improve their knowledge by repeating tests.”

One of the most valuable features of Educake is the ability to gather data and insights about the students' learning . This data is collected using an adaptive learning algorithm. This algorithm helps to identify the students who are struggling and to provide them with targeted support.

One of the most important aspects of a successful education is the ability of the students to learn independently. Educake provides teachers with the ability to create their own questions and to use the quiz results page to identify the students who are struggling . This allows teachers to focus their attention on those students who need it the most.

Educake also provides feedback on the students' performance so teachers can provide better analysis and feedback.

Schools can use the Whole school analysis to compare classes and schools. They can also use the individual student analysis to help them understand how each student learns best .

Educake teacher dashboard

Educate for Students

Students can use Educake to access exam boards such as KS3 Science, GCSE AQA Science, GCSE Edexcel Science, GCSE OCR Gateway Science, IGCSE Cambridge Science, IGCSE Edexcel Science, GCSE WJEC Science, GCSE CCEA Science. The subscription includes English and Maths .

Each board has its own set of revision materials , which are designed to help students learn and revise in the most efficient way possible. This way, students can focus on the material that applies to the exam board they are studying. Besides revision materials, Educake also includes personalised quizzes. These quizzes help students gauge their knowledge and skills, and provide instant feedback if they get answers wrong.

Plus, with the Track Progress page, students can see their strengths and weaknesses, and focus on what they need to improve. To take your learning on the go, students login at www.educake.co.uk or download the app from either the App Store or Google Play.

A student from Barclay Academy, Stevenage, Hertfordshire said, Ï think Educake is a very good resource. I use it for science work, and it is very fun. My favourite bit is the Educake Smart Assistant, as it recommends tests based on your strengths and weaknesses."

Educake at Home

Parents are always looking for ways to help their children learn and improve their academic performance. One popular way to do this is through home schooling . However, this can be expensive and time-consuming, which is why many parents turn to Educake. Educake is an affordable and convenient way to help your children learn .

Educake provides regular progress updates so parents can be reassured that their children are learning the right topics . Self-set quizzes help children learn and remember the material they are studying. online homework is also a popular feature of Educake. This allows children to complete their homework from the comfort of their own home. Last, high-quality homework is provided by educake, so your children can be sure they are receiving the best possible education .

https://www.structural-learning.com/post/exit-tickets

Harnessing the Power of EduCake for Personalized Learning

Harnessing the power of EduCake provides a solution for teachers eager to personalize their students' learning experiences. The platform serves as an excellent revision tool , capable of tailoring its approach to the individual needs of each learner. As a spaced learning and adaptive learning program , EduCake offers an array of functionalities that Class Teachers , be it an English teacher or a science teacher , can utilize to deliver key learning content and monitor student progress effectively.

EduCake allows for individual and focused revision sessions, enabling learners to consume information in manageable 'chunks' . This approach aligns with the cognitive principle that information processed in bite-sized pieces is often more effectively retained.

The tool's unique features such as the " filters teachers " can use to sort student accounts and track learning levels are specifically designed to aid educators in identifying gaps in student knowledge . With real-time feedback from students and easy-to-interpret analytics, teachers can adjust learning tasks based on individual student needs. It empowers educators to move beyond the 'one-size-fits-all' approach, creating a more inclusive and effective learning environment.

A notable psychologist once noted, "The most effective learning involves adapting and restructuring our existing knowledge framework to incorporate new information". This is precisely the function of EduCake - to facilitate this adaptive learning process.

A recent survey indicates that 85% of educators noticed significant improvement in student engagement when using EduCake for personalized learning . This statistic underscores the platform's potential to revolutionize how we approach learning in class .

In conclusion, EduCake stands as a potent tool in the evolving landscape of education, offering a dynamic, student-centered learning experience that caters to individual learning trajectorie s and paces. It streamlines the arduous process of lesson planning, tracking, and feedback for teachers, enabling them to focus on what matters most - facilitating key learning moments for their students.

  • The Effects of Chunking on Memory Retention
  • Adaptive Learning: Theoretical Perspectives

Subscriptions for English, Science and Maths each cost £880 a year (plus VAT), while Geography, History, Computer Science and Physical Education each cost £550 a year (plus VAT). Discounts are offered when schools subscribe to more than one subject. All subscriptions offer unlimited teachers and unlimited students. The 30-day trial is also available.

Educake Support

If you're a teacher, parent, or student using Educake, you're covered! The online help centre is packed with help articles on subscriptions and payments, managing accounts, and more. Plus, there are free resources - worksheets , posters, activities - just for you.

If you need advice or guidance - Educake's team of experts is available 8-5 UK time, Monday to Friday, to help you out.

Data Security and Privacy Policy

Educake is committed to safeguarding the privacy of your data. They have a well-documented policy for handling serious incidents like data breaches and store personal data on servers in data centres in the UK, provided by Amazon Web Services (AWS). AWS data centres comply with the international information security standard, ISO 27001.

Educake fully complies with the General Data Protection Regulation (GDPR), a European Union regulation also adopted by the UK.

https://www.structural-learning.com/post/boxall-profile

In conclusion, Educake has been developed with teachers in mind, but it’s also perfect for students looking to revise their work before exams. With over half a million users in the UK, Educake offers a range of features designed to help students study effectively and efficiently. Whether they're preparing for end-of-year exams or simply trying to improve their grades, Educake will give students everything they need to succeed.

What are the questions in Educake like?

Educake offers a wide range of question types so your child (or students) will be prepared for any exam. Based on the exam board selection, they will be shown the right questions. 

Educake has all the answers to help you prepare for your child's exams. There are multiple-choice questions and questions that require students to explain their answers.

How to sign in to your Educake account?

Teachers can sign in at https://my.educake.co.uk/teacher-login.

Students and parents can do so at https://my.educake.co.uk/student-login.

Students can use their email address to sign in. Alternatively, they also can use their existing Google or Microsoft account.

How much does Educake cost?

Educake pricing starts from £550 a year (plus VAT) for each subject, for unlimited students and teachers. Please refer to the Pricing section above for detailed information.

Who created Educake?

Educake was founded by Charley Darbishire in 2011 in Oxford, Oxfordshire.

How do you get started with Educake?

You can start using Educake by using their sample quizzes or starting a fully functional 30-day free trial .

how to find answers for science homework

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how to find answers for science homework

how to find answers for science homework

7 Best Java Homework Help Websites: How to Choose Your Perfect Match?

J ava programming is not a field that could be comprehended that easily; thus, it is no surprise that young learners are in search of programming experts to get help with Java homework and handle their assignments. But how to choose the best alternative when the number of proposals is enormous? 

In this article, we are going to talk about the top ‘do my Java assignment’ services that offer Java assignment assistance and dwell upon their features. In the end, based on the results, you will be able to choose the one that meets your demands to the fullest and answer your needs. Here is the list of services that are available today, as well as those that are on everyone's lips:

TOP Java Assignment Help Services: What Makes Them Special?

No need to say that every person is an individual and the thing that suits a particular person could not meet the requirements of another. So, how can we name the best Java assignment help services on the web? - We have collected the top issues students face when searching for Java homework help and found the companies that promise to meet these requirements. 

What are these issues, though?

  • Pricing . Students are always pressed for budget, and finding services that suit their pockets is vital. Thus, we tried to provide services that are relatively affordable on the market. Of course, professional services can’t be offered too cheaply, so we have chosen the ones that balance professionalism and affordability.
  • Programming languages . Not all companies have experts in all possible programming languages. Thus, we tried to choose the ones that offer as many different languages as possible. 
  • Expert staff . In most cases, students come to a company when they need to place their ‘do my Java homework’ orders ASAP. Thus, a large expert staff is a real benefit for young learners. They want to come to a service, place their order and get a professional to start working on their project in no time. 
  • Reviews . Of course, everyone wants to get professional help with Java homework from a reputable company that has already completed hundreds of Java assignments for their clients. Thus, we have mentioned only those companies that have earned enough positive feedback from their clients.
  • Deadline options. Flexible deadline options are also a benefit for those who are placing their last-minute Java homework help assignments. Well, we also provide services with the most extended deadlines for those who want to save some money and place their projects beforehand.
  • Guarantees . This is the must-feature if you want to get quality assistance and stay assured you are totally safe with the company you have chosen. In our list, we have only named companies that provide client-oriented guarantees and always keep their word, as well as offer only professional Java assignment experts.
  • Customization . Every service from the list offers Java assistance tailored to clients’ personal needs. There, you won’t find companies that offer pre-completed projects and sell them at half-price.

So, let’s have a closer look at each option so you can choose the one that totally meets your needs.

DoMyAssignments.com

At company service, you can get assistance with academic writing as well as STEM projects. The languages you can get help with are C#, C++, Computer science, Java, Javascript, HTML, PHP, Python, Ruby, and SQL.

The company’s prices start at $30/page for a project that needs to be done in 14+ days.

Guarantees and extra services

The company offers a list of guarantees to make your cooperation as comfortable as possible. So, what can you expect from the service?

  • Free revisions . When you get your order, you can ask your expert for revisions if needed. It means that if you see that any of your demands were missed, you can get revisions absolutely for free. 
  • Money-back guarantee. The company offers professional help, and they are sure about their experts and the quality of their assistance. Still, if you receive a project that does not meet your needs, you can ask for a full refund. 
  • Confidentiality guarantee . Stay assured that all your personal information is safe and secure, as the company scripts all the information you share with them.
  • 100% customized assistance . At this service, you won’t find pre-written codes, all the projects are completed from scratch.

Expert staff

If you want to hire one of the top Java homework experts at DoMyAssignments , you can have a look at their profile, see the latest orders they have completed, and make sure they are the best match for your needs. Also, you can have a look at the samples presented on their website and see how professional their experts are. If you want to hire a professional who completed a particular sample project, you can also turn to a support team and ask if you can fire this expert.

CodingHomeworkHelp.org

CodingHomeworkHelp is rated at 9.61/10 and has 10+ years of experience in the programming assisting field. Here, you can get help with the following coding assignments: MatLab, Computer Science, Java, HTML, C++, Python, R Studio, PHP, JavaScript, and C#.

Free options all clients get

Ordering your project with CodingHomeworkHelp.org, you are to enjoy some other options that will definitely satisfy you.

  • Partial payments . If you order a large project, you can pay for it in two parts. Order the first one, get it done, and only then pay for the second one.
  • Revisions . As soon as you get your order, you can ask for endless revisions unless your project meets your initial requirements.
  • Chat with your expert . When you place your order, you get an opportunity to chat directly with your coding helper. If you have any questions or demands, there is no need to first contact the support team and ask them to contact you to your assistant. 
  • Code comments . If you have questions concerning your code, you can ask your helper to provide you with the comments that will help you better understand it and be ready to discuss your project with your professor.

The prices start at $20/page if you set a 10+ days deadline. But, with CodingHomeworkHelp.org, you can get a special discount; you can take 20% off your project when registering on the website. That is a really beneficial option that everyone can use.

CWAssignments.com

CWAssignments.com is an assignment helper where you can get professional help with programming and calculations starting at $30/page. Moreover, you can get 20% off your first order.

Working with the company, you are in the right hands and can stay assured that the final draft will definitely be tailored to your needs. How do CWAssignments guarantee their proficiency?

  • Money-back guarantee . If you are not satisfied with the final work, if it does not meet your expectations, you can request a refund. 
  • Privacy policy . The service collects only the data essential to complete your order to make your cooperation effective and legal. 
  • Security payment system . All the transactions are safe and encrypted to make your personal information secure. 
  • No AI-generated content . The company does not use any AI tools to complete their orders. When you get your order, you can even ask for the AI detection report to see that your assignment is pure. 

With CWAssignments , you can regulate the final cost of your project. As it was mentioned earlier, the prices start at $30/page, but if you set a long-term deadline or ask for help with a Java assignment or with a part of your task, you can save a tidy sum.

DoMyCoding.com

This company has been offering its services on the market for 18+ years and provides assistance with 30+ programming languages, among which are Python, Java, C / C++ / C#, JavaScript, HTML, SQL, etc. Moreover, here, you can get assistance not only with programming but also with calculations. 

Pricing and deadlines

With DoMyCoding , you can get help with Java assignments in 8 hours, and their prices start at $30/page with a 14-day deadline.

Guarantees and extra benefits

The service offers a number of guarantees that protect you from getting assistance that does not meet your requirements. Among the guarantees, you can find:

  • The money-back guarantee . If your order does not meet your requirements, you will get a full refund of your order.
  • Free edits within 7 days . After you get your project, you can request any changes within the 7-day term. 
  • Payments in parts . If you have a large order, you can pay for it in installments. In this case, you get a part of your order, check if it suits your needs, and then pay for the other part. 
  • 24/7 support . The service operates 24/7 to answer your questions as well as start working on your projects. Do not hesitate to use this option if you need to place an ASAP order.
  • Confidentiality guarantee . The company uses the most secure means to get your payments and protects the personal information you share on the website to the fullest.

More benefits

Here, we also want to pay your attention to the ‘Samples’ section on the website. If you are wondering if a company can handle your assignment or you simply want to make sure they are professionals, have a look at their samples and get answers to your questions. 

AssignCode.com

AssignCode is one of the best Java assignment help services that you can entrust with programming, mathematics, biology, engineering, physics, and chemistry. A large professional staff makes this service available to everyone who needs help with one of these disciplines. As with some of the previous companies, AssignCode.com has reviews on different platforms (Reviews.io and Sitejabber) that can help you make your choice. 

As with all the reputed services, AssignCode offers guarantees that make their cooperation with clients trustworthy and comfortable. Thus, the company guarantees your satisfaction, confidentiality, client-oriented attitude, and authenticity.

Special offers

Although the company does not offer special prices on an ongoing basis, regular clients can benefit from coupons the service sends them via email. Thus, if you have already worked with the company, make sure to check your email before placing a new one; maybe you have received a special offer that will help you save some cash.

AssignmentShark.com

Reviews about this company you can see on different platforms. Among them are Reviews.io (4.9 out of 5), Sitejabber (4.5 points), and, of course, their own website (9.6 out of 10). The rate of the website speaks for itself.

Pricing 

When you place your ‘do my Java homework’ request with AssignmentShark , you are to pay $20/page for the project that needs to be done in at least ten days. Of course, if the due date is closer, the cost will differ. All the prices are presented on the website so that you can come, input all the needed information, and get an approximate calculation.

Professional staff

On the ‘Our experts’ page, you can see the full list of experts. Or, you can use filters to see the professional in the required field. 

The company has a quick form on its website for those who want to join their professional staff, which means that they are always in search of new experts to make sure they can provide clients with assistance as soon as the need arises.

Moreover, if one wants to make sure the company offers professional assistance, one can have a look at the latest orders and see how experts provide solutions to clients’ orders.

What do clients get?

Placing orders with the company, one gets a list of inclusive services:

  • Free revisions. You can ask for endless revisions until your order fully meets your demands.
  • Code comments . Ask your professional to provide comments on the codes in order to understand your project perfectly. 
  • Source files . If you need the list of references and source files your helper turned to, just ask them to add these to the project.
  • Chat with the professional. All the issues can be solved directly with your coding assistant.
  • Payment in parts. Large projects can be paid for in parts. When placing your order, let your manager know that you want to pay in parts.

ProgrammingDoer.com

ProgrammingDoer is one more service that offers Java programming help to young learners and has earned a good reputation among previous clients. 

The company cherishes its reputation and does its best to let everyone know about their proficiency. Thus, you, as a client, can read what people think about the company on several platforms - on their website as well as at Reviews.io.

What do you get with the company?

Let’s have a look at the list of services the company offers in order to make your cooperation with them as comfortable as possible. 

  • Free revisions . If you have any comments concerning the final draft, you can ask your professional to revise it for free as many times as needed unless it meets your requirements to the fullest.
  • 24/7 assistance . No matter when you realize that you have a programming assignment that should be done in a few days. With ProgrammingDoer, you can place your order 24/7 and get a professional helper as soon as there is an available one.
  • Chat with the experts . When you place your order with the company, you get an opportunity to communicate with your coding helper directly to solve all the problems ASAP.

Extra benefits

If you are not sure if the company can handle your assignment the right way, if they have already worked on similar tasks, or if they have an expert in the needed field, you can check this information on your own. First, you can browse the latest orders and see if there is something close to the issue you have. Then, you can have a look at experts’ profiles and see if there is anyone capable of solving similar issues.

Can I hire someone to do my Java homework?

If you are not sure about your Java programming skills, you can always ask a professional coder to help you out. All you need is to find the service that meets your expectations and place your ‘do my Java assignment’ order with them.  

What is the typical turnaround time for completing a Java homework assignment?

It depends on the service that offers such assistance as well as on your requirements. Some companies can deliver your project in a few hours, but some may need more time. But, you should mind that fast delivery is more likely to cost you some extra money. 

What is the average pricing structure for Java assignment help?

The cost of the help with Java homework basically depends on the following factors: the deadline you set, the complexity level of the assignment, the expert you choose, and the requirements you provide.

How will we communicate and collaborate on my Java homework?

Nowadays, Java assignment help companies provide several ways of communication. In most cases, you can contact your expert via live chat on a company’s website, via email, or a messenger. To see the options, just visit the chosen company’s website and see what they offer.

Regarding the Author:

Nayeli Ellen, a dynamic editor at AcademicHelp, combines her zeal for writing with keen analytical skills. In her comprehensive review titled " Programming Assignment Help: 41 Coding Homework Help Websites ," Nayeli offers an in-depth analysis of numerous online coding homework assistance platforms.

Java programming is not a field that could be comprehended that easily; thus, it is no surprise that young learners are

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How to Thrive as You Age

Got tinnitus a device that tickles the tongue helps this musician find relief.

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Allison Aubrey

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After using the Lenire device for an hour each day for 12 weeks, Victoria Banks says her tinnitus is "barely noticeable." David Petrelli/Victoria Banks hide caption

After using the Lenire device for an hour each day for 12 weeks, Victoria Banks says her tinnitus is "barely noticeable."

Imagine if every moment is filled with a high-pitched buzz or ring that you can't turn off.

More than 25 million adults in the U.S., have a condition called tinnitus, according to the American Tinnitus Association. It can be stressful, even panic-inducing and difficult to manage. Dozens of factors can contribute to the onset of tinnitus, including hearing loss, exposure to loud noise or a viral illness.

There's no cure, but there are a range of strategies to reduce the symptoms and make it less bothersome, including hearing aids, mindfulness therapy , and one newer option – a device approved by the FDA to treat tinnitus using electrical stimulation of the tongue.

The device has helped Victoria Banks, a singer and songwriter in Nashville, Tenn., who developed tinnitus about three years ago.

"The noise in my head felt like a bunch of cicadas," Banks says. "It was terrifying." The buzz made it difficult for her to sing and listen to music. "It can be absolutely debilitating," she says.

Tinnitus Bothers Millions Of Americans. Here's How To Turn Down The Noise

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Tinnitus bothers millions of americans. here's how to turn down the noise.

Banks tried taking dietary supplements , but those didn't help. She also stepped up exercise, but that didn't bring relief either. Then she read about a device called Lenire, which was approved by the FDA in March 2023. It includes a plastic mouthpiece with stainless steel electrodes that electrically stimulate the tongue. It is the first device of its kind to be approved for tinnitus.

"This had worked for other people, and I thought I'm willing to try anything at this point," Banks recalls.

She sought out audiologist Brian Fligor, who treats severe cases of tinnitus in the Boston area. Fligor was impressed by the results of a clinical trial that found 84% of participants who tried Lenire experienced a significant reduction in symptoms. He became one of the first providers in the U.S. to use the device with his patients. Fligor also served on an advisory panel assembled by the company who developed it.

"A good candidate for this device is somebody who's had tinnitus for at least three months," Fligor says, emphasizing that people should be evaluated first to make sure there's not an underlying medical issue.

Tinnitus often accompanies hearing loss, but Victoria Banks' hearing was fine and she had no other medical issue, so she was a good candidate.

Banks used the device for an hour each day for 12 weeks. During the hour-long sessions, the electrical stimulation "tickles" the tongue, she says. In addition, the device includes a set of headphones that play a series of tones and ocean-wave sounds.

The device works, in part, by shifting the brain's attention away from the buzz. We're wired to focus on important information coming into our brains, Fligor says. Think of it as a spotlight at a show pointed at the most important thing on the stage. "When you have tinnitus and you're frustrated or angry or scared by it, that spotlight gets really strong and focused on the tinnitus," Fligor says.

"It's the combination of what you're feeling through the nerves in your tongue and what you're hearing through your ears happening in synchrony that causes the spotlight in your brain to not be so stuck on the tinnitus," Fligor explains.

how to find answers for science homework

A clinical trial found 84% of people who used the device experienced a significant reduction in symptoms. Brian Fligor hide caption

A clinical trial found 84% of people who used the device experienced a significant reduction in symptoms.

"It unsticks your spotlight" and helps desensitize people to the perceived noise that their tinnitus creates, he says.

Banks says the ringing in her ears did not completely disappear, but now it's barely noticeable on most days.

"It's kind of like if I lived near a waterfall and the waterfall was constantly going," she says. Over time, the waterfall sound fades out of consciousness.

"My brain is now focusing on other things," and the buzz is no longer so distracting. She's back to listening to music, writing music, and performing music." I'm doing all of those things," she says.

When the buzz comes back into focus, Banks says a refresher session with the device helps.

A clinical trial found that 84% of people who tried Lenire , saw significant improvements in their condition. To measure changes, the participants took a questionnaire that asked them to rate how much tinnitus was impacting their sleep, sense of control, feelings of well-being and quality of life. After 12 weeks of using the device, participants improved by an average of 14 points.

"Where this device fits into the big picture, is that it's not a cure-all, but it's quickly become my go-to," for people who do not respond to other ways of managing tinnitus, Fligor says.

One down-side is the cost. Banks paid about $4,000 for the Lenire device, and insurance doesn't cover it. She put the expense on her credit card and paid it off gradually.

Fligor hopes that as the evidence of its effectiveness accumulates, insurers will begin to cover it. Despite the cost, more than 80% of participants in the clinical trial said they would recommend the device to a friend with tinnitus.

But, it's unclear how long the benefits last. Clinical trials have only evaluated Lenire over a 1-year period. "How durable are the effects? We don't really know yet," says audiologist Marc Fagelson, the scientific advisory committee chair of the American Tinnitus Association. He says research is promising but there's still more to learn.

Fagelson says the first step he takes with his patients is an evaluation for hearing loss. Research shows that hearing aids can be an effective treatment for tinnitus among people who have both tinnitus and hearing loss, which is much more common among older adults. An estimated one-third of adults 65 years of age and older who have hearing loss, also have tinnitus.

"We do see a lot of patients, even with very mild loss, who benefit from hearing aids," Fagelson says, but in his experience it's about 50-50 in terms of improving tinnitus. Often, he says people with tinnitus need to explore options beyond hearing aids.

Bruce Freeman , a scientist at the University of Pittsburgh Medical Center, says he's benefitted from both hearing aids and Lenire. He was fitted for the device in Ireland where it was developed, before it was available in the U.S.

Freeman agrees that the ringing never truly disappears, but the device has helped him manage the condition. He describes the sounds that play through the device headphones as very calming and "almost hypnotic" and combined with the tongue vibration, it's helped desensitize him to the ring.

Freeman – who is a research scientist – says he's impressed with the results of research, including a study published in Nature, Scientific Reports that points to significant improvements among clinical trial participants with tinnitus.

Freeman experienced a return of his symptoms when he stopped using the device. "Without it the tinnitus got worse," he says. Then, when he resumed use, it improved.

Freeman believes his long-term exposure to noisy instruments in his research laboratory may have played a role in his condition, and also a neck injury from a bicycle accident that fractured his vertebra. "All of those things converged," he says.

Freeman has developed several habits that help keep the high-pitched ring out of his consciousness and maintain good health. "One thing that does wonders is swimming," he says, pointing to the swooshing sound of water in his ears. "That's a form of mindfulness," he explains.

When it comes to the ring of tinnitus, "it comes and goes," Freeman says. For now, it has subsided into the background, he told me with a sense of relief. "The last two years have been great," he says – a combination of the device, hearing aids and the mindfulness that comes from a swim.

This story was edited by Jane Greenhalgh

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Hand-Held Hubble

Sample Hand Held Hubble PVC Model

Make a scale model of NASA’s Hubble Space Telescope using easy-to-find supplies and our printable materials.

This model can be assembled by young children, but requires a trip to the hardware store — and an adult to help use tools.

Difficulty: Average Durability: Sturdy Detail: Low

This basic model of the Hubble Space Telescope is made out of PVC pipe. You can find the parts at local hardware and craft stores for under $30, and it should take about 1-3 hours to build. You’ll need an adult’s help for some of the construction.

This model reflects the state of the telescope after Servicing Mission 3B, which took place in March 2002.

Directions and Pattern Sheets

We provide PDF downloadable wrappers to put around your model, Directions, and Shopping List. Choose either the Black-and-White Wrapper or the Color Wrapper, then print the Wrapper on regular paper.

Important — Printing the Wrapper

You may need to adjust your printer options in order to print the Wrapper at the correct size. On the first page of the printout is a gauge that allows you to check the printout’s scale. Use a ruler to make sure the "1 inch" mark is actually an inch long. If your printout doesn’t measure up, make the following adjustments in the Print dialog box:

  • If you’re using Adobe Reader 6 or higher, set "Page Scaling" to "None."
  • If you’re using Acrobat 5, deselect "Shrink Oversized Pages to Paper Size" and "Expand Small Pages to Paper."
  • If you’re using Acrobat 4, deselect "Fit to Page."

Hand-Held Hubble Model Wrappers - Directions

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Hand-Held Hubble Model Wrappers - Shopping List

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Hand-Held Hubble Model Wrappers - Color Wrapper

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Hand-Held Hubble Model Wrappers - Black and White Wrapper

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  • Drill with 3/16"drill bit
  • Instructions printed on regular paper
  • Miter box (optional)
  • C-clamp or vise
  • Sandpaper or file
  • Scissors or craft knife

See the Directions for complete printing instructions and supplies.

Important Safety Information

This model requires the use of power tools. Adults must be present to supervise children attempting to construct this model. Eye protection is strongly advised.

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More Hubble Activities and Links

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Using our Skymap, find astronomical objects with a backyard telescope, or binoculars, then compare your view to Hubble's images of the object.

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Flip through Hubble's Flickr albums and see astronauts at work in space, behind the scenes of mission operations, and images from nebulae to gravitational lens.

Upper left: "Hubble Focus" opening of the telescope is the "O" Center: bright-white star, Center Bottom: Orange-red planet with cloud bands, Center: small, bright-white star and very small red-orange dwarf star

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Investigate the mysteries of the universe, or dive into Hubble's history with our free, downloadable e-books.

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Hear about Hubble's mission, discoveries, and images.

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Hubble Videos

From science to history, from servicing mission to technology, and from documentaries to human interest stories, NASA had produced a library of informative and interesting videos on the Hubble Space Telescope.

In the mystery of Florida’s bizarre spinning fish, a leading suspect has emerged

A mysterious ailment causing fish in the Florida Keys to spin in circles has touched off a frantic race to find the cause and save an endangered species before it’s too late.

Eight months into scientists’ hunt, some think a primary suspect has emerged: Toxins from algae colonizing the seafloor may be causing neurological issues for some fish species.

Fishermen noticed the bizarre behavior in October, according to Ross Boucek, a fisheries ecologist with the Bonefish & Tarpon Trust, a nonprofit conservation and fishing group.

A sawfish sticks it's head out of the water

“When they shined their lights, fish would turn upside down and spin to the bottom,” he said.

Over the following months, Boucek received reports of upside-down stingrays and lemon sharks whirling violently in the mud. Dozens of species were afflicted, including the critically endangered smalltooth sawfish, which is known for its flat snout with teeth that looks like a saw blade.

At least 47 sawfish have died , though the number is likely higher, said Michael Crosby, the president and CEO of Mote, a nonprofit marine lab and aquarium. The toll is profound, given that there may be just several hundred of the fish left in U.S. waters .

An emergency response to rescue afflicted sawfish launched in early April, involving government agencies and nonprofit partners. Meanwhile, scientists at several laboratories are trying to figure out what’s causing the widespread distress for marine life.

Recently, researchers’ tests identified a cocktail of natural toxins in both seawater and the tissues of some stricken fish.

“The hypothesis I’m working on at the moment is really that the combination of these various benthic algal toxins are coming together to create the phenomenon we’re seeing,” said Alison Robertson, a senior marine scientist at the Dauphin Island Sea Lab.

But that isn’t confirmation, she added, and researchers don’t know what caused the algae or toxins to proliferate. Plus, other experts are less convinced.

“I honestly don’t think anything can reasonably be ruled out right now,” Crosby said.

Whatever researchers ultimately conclude may determine what’s on dinner plates at some Florida restaurants, how fishermen make their livelihoods and whether tourists come to visit. The Keys have already suffered several ecological shocks: Hurricane Irma in 2017, record sea surface temperatures last year and the mass die-off of corals.

“We’ve been bouncing from crisis to crisis down here,” Boucek said.

Allison Delashmit, executive director of a fishing group called the Lower Keys Guides Association, said “there’s a lot at stake.”

“Our economy is built on tourism. It’s not a good look to have spinning fish on the water and broadcasting it without answers about what it is,” she said.

That puts local scientists under intense pressure to deliver answers.

Is the algae to blame?

It’s been a tiring eight months for Boucek, whose freezer at home is filled with dead fish he plans to send out for testing. He compared the effort to “a final exam you forgot about and never studied before, and you have two hours to learn everything.”

When the work began, he said, the most likely explanations for the bizarre fish behavior did not pan out. Oxygen levels in the water were normal. There weren’t any signs of red tide. Tests for pollutants found nothing out of the ordinary.

Boucek figured the exposure was likely from the water, and when he removed spinning fish from the ocean and placed them in tanks with clean water, some recovered in as little as 25 minutes.

The only lead was elevated background levels of a genus of algae called Gambierdiscus in water samples.

That clue drew the attention of Michael Parsons, a professor of marine science at Florida Gulf Coast University and an algae expert who had been collecting that very genus in the Keys for more than a decade. In February, Parsons found that levels of Gambierdiscus cells were about four times higher than he’d ever recorded.

Robertson, an environmental toxicologist, reoriented her laboratory to respond to the crisis and has been working seven days a week. She estimates her team has performed more than 5,000 analyses of algae, seawater and the muscles, livers, kidneys and stomachs from a variety of affected fish species.

Her work has turned up toxins known to affect fish behavior, as well as some new potential toxins that had never been seen before in the Keys.

“The things we’re finding in benthic algae, we’re also finding in a lot of fish samples,” Robertson said.

She suspects a “cocktail” of toxins from seafloor algae, potentially from several species, are combining to cause the strange fish behavior, though she said there is still “no obvious smoking gun.” The toxins could be interacting with other environmental toxins too, she said.

Efforts to save the sawfish

Other scientists, meanwhile, are racing to help distressed sawfish.

In early April, Mote staffers rescued an 11-foot male sawfish that was swimming in circles in Cudjoe Bay. They loaded the fish onto a boat, brought it to a quarantine facility with clean, filtered seawater and infused it with antibiotics, lipid compounds and other treatments, according to Crosby.

“If you can put it in human terms, we had a patient brought into intensive care,” he said.

The fish stabilized and “was beginning to swim in a more natural pattern,” Crosby said.

But two weeks later, the animal’s health cratered and it had to be euthanized.

“We were clearly heading in a positive direction, but the internal organs were too far gone,” Crosby said.

He added that he hasn’t seen enough evidence to convince him that algae is to blame. Results of the necropsy (an autopsy of an animal) are still pending, but they could offer important information because researchers were able to run tests shortly after it died. Mote also plans to try to rescue more sawfish.

There are other reasons for hope, too.

Robertson said this episode does not seem to represent the crash of an entire ecosystem.

Other important species are doing OK, including barracuda, bonefish and tarpon, which seem to be largely unaffected, Boucek said.

Florida lawmakers have also agreed to spend $2 million on fish research in the Keys , which could help scientists reach answers more quickly.

“Because so many scientists are coming together on this issue, we’re going to be able to work out what’s going on and find mitigation strategies and solutions,” Robertson said.

Evan Bush is a science reporter for NBC News. He can be reached at [email protected].

DNA editing could make northern quolls cane toad-resistant and potentially avoid extinction

A photo of a quoll wrapped in a blanked next to a man in a labcoat and blue gloves holding a quoll.

University researchers are confident they will be able to save the northern quoll from being driven to extinction by cane toads, thanks to microscopic genetic modifications.

Northern quolls, which live in areas of WA's Pilbara and Kimberley regions, as well as the Northern Territory and Queensland, are under threat due to the spread of the invasive pest.

The small marsupials often eat the toads and ingest the toxins they produce, causing quolls to die.

In Queensland, this has already triggered a 75 per cent drop in quoll numbers.

Image of a small northern quoll looking directly into the camera

But combined research from the University of Melbourne and US firm Colossal Biosciences has provided a lifeline for the endangered animals.

University of Melbourne professor Andrew Pask said cane toads were "one of the biggest threats to northern quoll populations".

But by altering two genomes in the quolls' DNA, Professor Pask said they could develop an immunity to cane toad toxins.

He said millions of years of evolution had seen some animals in South America, which exist alongside the toads in their natural habitat, develop a natural immunity to their toxins.

A man wearing a lab coat with his arms crossed.

"We've looked at ways that we can genetically engineer a quoll to be cane toad-toxin-resistant," he said.

"We're taking those naturally existing changes that we know happen into just two tiny changes to a three billion-base-pair genome."

Researchers now hope to implant artificially grown embryos with the genome strand, which would then grow into quolls and pass on genetic information to descendants.

He said it was thanks to genetic editing that wild quolls could exhibit that immunity within just a few years.

"We're hoping within five years, we should be able to have the animals on the ground.

"The fantastic thing about this is it means not only do we save the quoll, but they can then eat cane toads and help control the spread of this terrible pest species across our landscape."

An image of a cane toad on a metal surface.

De-extinction technology provides lifeline

The technology to edit genomes in this fashion comes from work being done by Colossal Biosciences to reverse the extinction of animals once thought to be lost to history.

Currently the firm is attempting to revive animals like the dodo, mammoth and Tasmanian tiger .

The northern quoll, which shares a close relation to the thylacine, can now benefit from this research.

Professor Pask said compared to other projects, work being done to avert extinction of quolls was relatively simple. 

A Tasmanian tiger stands in an enclosure.

"This is not anywhere near as big a project as some of the de-extinction things we're working on," he said.

"This is a very simple edit, and then turning those cells back into a living animal is a lot less challenging."

It's hoped that with a successful rollout to northern quolls, similar technology could be applied to other animals that consume cane toads, like goannas, snakes and freshwater crocodiles.

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Global Big Day—11 May 2024

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Be a part of birding’s biggest team! Global Big Day is an annual celebration of the birds around you. No matter where you are, join us virtually on 11 May, help celebrate World Migratory Bird Day , and share the birds you find with eBird.

Participating is easy—you can even be part of Global Big Day from home. If you can spare 5 or 10 minutes, report your bird observations to eBird online or with our free eBird Mobile app . If you have more time, submit several checklists of birds throughout the day. You never know what you might spot. Your observations help us better understand global bird populations through products like these animated abundance maps brought to you by eBird Science.

Last year, Global Big Day collected more data about birds on a single day than ever before. More than 58,000 people gathered 3.2 million bird observations on 148,000 checklists, setting new world records for a single day of birding. Will you help us make this the year we surpass 150,000 checklists on a single day?

How to participate

  • Get an eBird account: eBird is a worldwide bird checklist program used by millions of birders. It’s what allows us to compile everyone’s reports into a single massive Global Big Day list—while at the same time collecting data to help scientists better understand birds. Sign up here. It’s 100% free from start to finish.
  • Enjoy birds on 11 May: It’s that simple. You don’t need to be a bird expert or go out all day long, even 10 minutes of birding from home counts. Global Big Day runs from midnight to midnight in your local time zone. You can report what you find from anywhere in the world.
  • Enter what you see and hear in eBird: You can enter your sightings via our website or download the free eBird Mobile app   to make submitting lists even easier. Please enter your checklists before 14 May to be included in our initial results announcement.
  • Watch the results roll in: During the day, follow along with bird observations from more than 200 countries in real-time on our Global Big Day page .

eBird Trip Reports on Global Big Day

eBird Trip Reports are a great way to share where you went and the birds you found on Global Big Day. Simply create an eBird Trip Report for 11 May 2024. As you submit lists and upload media throughout the big day, they’ll be added to your report automatically. Send the trip report link to friends and family so they can follow along. ( Learn more about eBird Trip Reports )

Global Big Day Pro Tips

  • The Cornell Lab’s free Merlin Bird ID app can help you to identify the birds you see and hear on Global Big Day.
  • Use eBird Mobile Explore to find recently reported species or new places to go birding nearby.
  • Take photos and sound recordings and add them to your checklist —they might end up on the Global Big Day page!
  • Make your sightings more valuable:  submit complete checklists ,  keep counts of the birds that you see, and keep multiple checklists throughout the day.
  • Share what you’re seeing on social media with #GlobalBigDay !

On 11 May, we hope you’ll be a part of our global birding team. Have fun, enjoy the birds you find, stay safe, and share your sightings on eBird. Because in our world, every bird counts.

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  30. Global Big Day—11 May 2024

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