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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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Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.
Fourth Grade
Easy
This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.
Elementary School
Second Grade
This project investigates the affect of storage temperature on microwave popcorn.
Elementary School
Third Grade
In this science fair project, you will learn the differences between coarse-, medium-, and fine-textured soils.
Middle School
High School
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Second Grade
Third Grade
In this science fair project, students make their own rain gauge to measure rainfall.
Fourth Grade
Weather and Climate
What if the shape of the Earth weren't spherical? How does its shape affect our gravity, climate, and tides? Model these questions in this cool project!
Seventh Grade
Ecology

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