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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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This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.
Fourth Grade
Ecology
Investigate which substances are most effective at removing salt from water.
Ninth Grade
Chemistry
In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.
Fourth Grade
Hard
Check out 10 of our favorite chemistry experiments for kids. Little mad scientists can learn about endothermic and exothermic reactions, electrolysis, oxidation, and combustion with easy experimental procedures that enlighten young minds while minimizing the need for specialized equipment.
Science Fair Project Ideas
Chemistry
This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.
Elementary School
Fourth Grade
This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.
Elementary School
First Grade
This science fair project idea enhances awareness of local food production and food sourcing.
Elementary School
Middle School
Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.
Elementary School
Middle School
This science fair project idea tests whether it is true that humans are in the morning than later during the day/night.
Middle School
High School

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