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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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Showing 136 to 150 of 160
In this free science fair project idea, we learn how to polarize light waves in a specific direction.
Electricity and Magnetism
Middle School
In this free science fair project idea, we learn about how differently colored objects absorb electromagnetic radiation at different rates.
Electricity and Magnetism
Middle School
The objective of this science fair project is to determine whether electric power can be generated from fruits to power a light bulb and a buzzer.
Electricity and Magnetism
High School
Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.
Electricity and Magnetism
Middle School
In this free science fair project idea, we learn about how the surface area of a refrigerant affects the rate at which it cools objects.
Electricity and Magnetism
Middle School
In this free science fair project idea, we learn about fronts and how they move about and affect the weather.
Weather and Climate
Middle School
In this free science fair project idea, we learn about how magnetic forces are attracted and repelled, and create movement by utilizing them.
Electricity and Magnetism
Middle School
In this free science fair project idea, we learn the mechanics behind parallel circuits and electric currents.
Electricity and Magnetism
Middle School
This article provides steps for making a rheostat, a small device that controls the voltage by a dial or knob. Great for science fairs!
Electricity and Magnetism
Middle School
Learn about the greenhouse effect- and get great science fair experiment ideas. Read more.
Electricity and Magnetism
Middle School
In this free science fair project idea, we learn about static electricity and the nature of a static charge.
Electricity and Magnetism
Middle School

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