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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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In this free science fair project, explore the behavior of sensitive plants and experiment with what stimuli cause them to move.
Botany
Middle School
In this free science fair project, experiment the rate of plant growth with the concentration of growth-stimulating chemical. Great science project for kids.
Botany
Middle School
In this free science fair project, experiment with whether plants grow best in nutrient solution or plants.  Explore the science of hydroponics.
Botany
Middle School
In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.
Anatomy
Fourth Grade
This project studies how density maximizes the growth of juvenile limulus polyphemus (Horseshoe Crabs)
Zoology
Middle School
Weather and Climate
Elementary School
Botany
Elementary School

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