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Science Fair Project Ideas 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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This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.
Elementary School
Fifth Grade
This science fair project idea determines an average personâs ability to use their anaerobic power system over a period of 2 weeks.
Middle School
High School
When the lungs are filled, they hold varying volumes of air depending on the size of person. In this project, learn how to measure your lung's air capacity.
Middle School
In this free science fair project, using a stereoscope explore what stereoscopic vision is.  A great science project for middle school students.
Middle School
This project is about after-images and what possibly affects them.
Middle School
Psychology and Sociology
Explore amazing facts about camels and learn how they can walk across sand without sinking, in this fun-filled science fair project idea.
Middle School

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