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1000 Science Fair Projects with Complete Instructions

Find science fair project ideas from our collection of 1000+ STEM projects!

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Science Fair Project FAQ

What are easy science fair projects to do?

Explore the exciting world of science with an easy science fair project that you can do at home using simple materials. Any one of these easy science fair projects will teach you important scientific concepts and help you have fun while learning. An easy science fair project is a great way to introduce the wonders of science to kids and adults alike!

  • Changing the Color of Flowers

  • Baking Soda Volcano

  • Swimming Raisins

  • Egg with Vinegar

  • Color of Skittles Experiment

  • Jumping Rice Krispies

  • Mixing Colors of Light

  • Camouflage and Hide

  • Light and Dark on Seed Germination

  • Make a Parachute

Project details and more projects at Easy Science Fair Projects

What are the Top 10 science projects? What is the best science project ever?

We've picked the best science project from each science category, all based on interesting topics. All together these are our top 10 science projects! If you're looking for more science projects at another difficulty level, we've got plenty of other science fair project ideas to explore by grade level!

  • Jet Lag in Hamsters (circadian rhythm, Biology science fair project)

  • Egg with Vinegar (acid-base reaction, Chemistry science fair project)

  • Galileo's Inclined Plane Experiment (acceleration, Physics science fair project)

  • Plant's Favorite Color for Photosynthesis (Photosynthesis, Botany science fair project)

  • Color and Taste (color perception, Psychology science fair project)

  • Does Dog Saliva Kill Bacteria? (antibacterial, Microbiology science fair project)

  • Decomposing Plastic Spoons (biodegradable materials, Environmental Science science fair project)

  • Super Hero Egg Shells (structural engineering, Engineering science fair project)

  • Music Math: Playing Notes with Equations (music, Math science fair project)

  • Temperature's Effect on Seawater (climate change, Earth Science science fair project)

Project details at Best Science Fair Projects

What are some cool science fair projects?

Get ready to be amazed by super cool science projects that you can do right at home! With just a few simple things, you can be fascinated by science and have tons of fun with these popular science projects!

  • Explosive Elephant Toothpaste

  • Egg with Vinegar

  • Electrifying Lemon Battery

  • Making Oobleck: Liquid or Solid?

  • Egg Drop Project

  • Colors of Skittles Experiment

  • Cloud in a Bottle

  • Baking Soda Volcano

  • Egg in a Bottle

  • Plastic Milk

Project details and more projects at Popular Science Fair Projects

What are some testable questions?

A testable question is a question that we can answer through a science experiment. To do this, we do a control science experiment, then we change one thing in the experiment to see how it affects what happens. This is how we can discover the answer to our question!

  • What makes a cloud form?

  • Can drink and food taste different just by changing its color?

  • Does the color of light affect photosynthesis?

  • Does temperature affect seed sprouting?

  • What makes popcorn pop?

Project details and more projects at Testable Questions Science Fair Projects

Can I do a science fair project in a day?

Yes! Quick experiments can be a great option for a science fair project! If you're interested in exploring fast reactions, we have some science fair project ideas with varying levels of difficulty to choose from.

  • Rocket Film Canisters

  • Make Your Own pH Indicator

  • Testing Antacids

  • Colors of Skittles Experiment

  • Uncovering Fall Colors

  • Which Candle Burns the Fastest?

  • Fire-Resistant Balloons

  • Can Peanuts Heat Water?

Project details at Quick Science Fair Projects →

What are some hands-on ways to find inspiration for my science fair project?

Science museums

Science museums are great places to explore if you're looking for inspiration for your next science fair project or just want to learn more about science. Science museums, natural history museums, space museums, and discovery museums are all great places to do that! You can discover all sorts of interesting things about science and find cool project ideas for science fairs.

Don't worry about how much it costs to get into the science museum, as there may be free admission days or free passes to a science museum near you! Check your credit card for offers, your local library for free museum passes, and nearby science museums for free entrance days.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

Look around and observe

Do you know how scientists start their cool projects? They often get curious about something when they read about a topic or make observations around them. You can do the same! Read about a science topic and look around your school, home, or community. Is there anything that catches your attention and makes you curious? Maybe you notice something interesting or a problem that people are facing. This could be a great starting point for your science fair project!

Try an Easy Science Project!

These science projects are easy and fun to do. You may discover one that sparks your interest and inspires you to do more experiments, turning it into a science fair project! Easy Science Fair Projects

How do I start a science fair project?

No matter if you're in high school, elementary or middle school, science fair projects are a fun and unique way to discover science by asking a question and doing a science project. We'll help you find a science fair project idea and guide you through the process of doing and presenting your science fair project with Science Fair Coach's Science Fair Project Guide.

What is the scientific method?

The scientific method is a problem-solving process to find answers to questions about the world. By following the steps of the scientific method, we can ask a question, do research, make a hypothesis, design an experiment, collect and analyze data, and draw conclusions. It's a process that encourages critical thinking and helps us better understand the world we live in. Science Fair Coach's Scientific Method Guide will help you navigate through the steps of the scientific method.

What should I do after I have a science fair project idea?

If you have a science fair project idea, Science Fair Coach can help you turn it into a full science fair project! Starting at our Scientific Method Guide, we'll guide you through every step of the scientific method, from designing and conducting your experiment to collecting and analyzing your findings. Then, we'll help you showcase your results on a science fair board for others to learn from and enjoy.

How do I make a science fair board?

Your science fair board is where you show off your science fair project for everyone to see and learn from. With our Science Fair Poster Guide, you can make sure your science fair board stands out and impresses at the science fair!

Where can I find a science fair competition?

Science fair competitions are an excellent opportunity to explore science. One of the of the premier science advocacy organizations, the Society for Science, is associated with more than 400 science fair competitions in almost every US state, as well as over 70 other countries, regions, and territories. You can find out if there's a Society of Science affiliated science fair near you!

The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and even virtual competitions!

Science Projects Resources

Tips and Guides
Kids Science Fair Projects - Neurosience for kidsSimple science fair projects guide written by former organizer Lynne Bleeker (a science teacher, judge, and parent) Science Projects: The Five Types Described In Detail5 types of science projects described. It also has links
Science Fair Resource Guide - IPL Kidspace, the Internet Public LibraryIf you're looking for help, this site will guide you to a variety of web site resources, leading you through the necessary steps to successfully complete an experiment
What is the Scientific Method?
From our Science Fair Project GuideA very simple and clear overview of the scientific method
General Information for Kids
Exploratorium the Museum of Technology, Art and Human PerceptionAn excellent site with very detailed explanations and illustrations on many phenomena
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