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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 16 to 30 of 157
What direction should solar panels face? It's not the direction you might think! This free and enlightening science fair project helps kids discover the answer.
Weather and Climate
Ninth Grade
What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!
Electricity and Magnetism
Sixth Grade
Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.
Weather and Climate
Third Grade
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Weather and Climate
Fourth Grade
By dropping a magnet through a copper tube, kids observe the cool (and bizarre) braking effect produced by the eddy currents predicted by Lenz's law.
Electricity and Magnetism
Seventh Grade
For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.
Electricity and Magnetism
Second Grade
Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.
Weather and Climate
Seventh Grade
In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.
Weather and Climate
Fifth Grade
Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.
Weather and Climate
Fifth Grade
High school students learn about resistance, resistivity, and if copper is the best metal conductor in this great physics science fair project idea.
Electricity and Magnetism
Tenth Grade
In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.
Electricity and Magnetism
Sixth Grade
How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!
Electricity and Magnetism
Fifth Grade
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Weather and Climate
Second Grade
Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.
Weather and Climate
Fifth Grade
Explore concepts in current and coltage with these Van de Graaff generator experiments.
Electricity and Magnetism
Seventh Grade

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