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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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Select a study area that has a variety of plant life and learn about its ecosystem in this science fair project.
Life Science
Middle School
In this free science fair project idea, test a friend on how long it takes them to trace the mirror image of an object.
Psychology and Sociology
Middle School
This science research project challenges students to think of more effective lobster farming methods.
Zoology
Elementary School
Learn how healthy potted tomato plants can mature and bear fruit in a hydroponic environment! Use Education.com for free science fair project ideas.
Botany
Middle School
Learn how to test for the production of carbon dioxide by respiration in plants with this science fair project.
Botany
Middle School
Learn about plant growth with this science fair project using a pinto bean plant! Use Education.com for science fair project ideas.
Botany
Middle School
This science project allows students to study the psychology of happiness.
Psychology and Sociology
Elementary School
This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.
Psychology and Sociology
Elementary School
This project studies how density maximizes the growth of juvenile limulus polyphemus (Horseshoe Crabs)
Zoology
Middle School
The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.
Botany
Elementary School
Purpose of science fair project: does pre-washing lettuce with a vinegar and water solution remove more bacteria than washing with only water?
Microbiology
Elementary School

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