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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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How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.
Applied Mathematics
Fifth Grade
In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.
Physics
Applied Mathematics
In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.
Physics
Fifth Grade
In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!
Chemistry
Third Grade
For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.
Electricity and Magnetism
Second Grade
Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.
Physical Science
Third Grade
Examine how a battery can be made from everyday materials.
Physics
Middle School

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