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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 do search engines work? What makes various search engines different? This project delves into the world of web crawlers, caching, indexing and algorithms.
Seventh Grade
Psychology and Sociology
Test whether plants can grow without sunlight and water.
Elementary School
Second Grade
The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!
Seventh Grade
Physics
In this science fair experiment, kids will use the acid test to discover how to tell one mineral from another.
Seventh Grade
Eighth Grade
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
Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.
Fifth Grade
Environmental Issues
Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.
Fourth Grade
Zoology
This experiment investigates if stress alters body temperature.
Middle School
Sixth Grade
This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
Third Grade
Medium

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