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Science Fair Project Ideas

Education.com has assembled a vast collection of science fair project ideas written by science teachers, professional scientists, and educational consultants on popular science fair topics ranging from physics and chemistry to biology and even sociology. We offer free science fair ideas suitable for every grade level, be it preschool, kindergarten, elementary school, middle school, or high school. Check the boxes in the sidebar to filter your results, or use the search bar to find that perfect science fair project or experiment your child will be sure to love.

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For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.
Second Grade
Electricity and Magnetism
Build a magnetic linear accelerator using a ruler, neodymium magnets, and small metal balls in this fun science fair project exploring magnetic propulsion.
Ninth Grade
Physics
In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.
Sixth Grade
Electricity and Magnetism
Create safe lightning for kids! They'll learn how to make lightning at home with this fun science fair project idea illustrating static charges and grounding.
Fifth Grade
Electricity and Magnetism
How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!
Fifth Grade
Electricity and Magnetism
Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.
Sixth Grade
Easy
This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.
Fourth Grade
Electricity and Magnetism
How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.
Third Grade
Electricity and Magnetism
Middle School
Electricity and Magnetism
This science project challenges students to study the salt content in tap water and learn about electrochemistry.
Middle School
Electricity and Magnetism

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