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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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Discover the force of water! This article provides step-by-step instructions for creating your own science experiment.

Electrolysis of Water Experiment

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.

How to Make a Steam Powered Rocket Boat

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Renewable Energy Project for Kids: Power from Water

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Plants Help Keep a House Cool!

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

Heat from Light Bulbs

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

Solar Hot Dog Cooker

Kids use applied math to build and test a parabolic mirror solar hot dog cooker in this cool engineering science fair project idea for middle school.

Air Power for Transportation

Can the force of air be used to propel a vehicle? This science experiment provides step-by-step instructions to help you answer this question.

Building a Wind Gauge

How fast is the wind blowing? This science experiment provides step-by-step instructions to help you answer this question.

How to Make an Anemometer

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

How Light Affects Plant Growth

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Germination: "The Birth of a Plant"

Do Plants Start Off Better with Distilled Water, Miracle Gro or a Complete Nutrient?

Do Gender and Age Affect Smiling?

This science fair experiment examines the relationship between gender, age, and smiling.

Diffusion, Membranes, and Cryogenics: Can We Freeze Cells?

Can cells be frozen? This science fair project provides information to answer this question.

Tides in the Chesapeake Bay

Windy Weather II: The Correlation Between Barometric Pressure and Wind Velocity

This science project researches the correlation between barometric pressure and wind velocity.

Comparing Different Methods of Assessing Turbidity

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Counting Air Particulate Matter

Is there more air particulate matter in an urban or rural environment? Test your knowledge with this science fair project.

Queenstown Creek: Land Use Vs. Water Quality

This project researches whether the type of land use affects the water quality of Queenstown Creek.

What Affects the Appearance of Afterimages?

This project is about after-images and what possibly affects them.

Light Intensity and Distance

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Effect of Food On Mosquito Growth

This experiment researches if you gave different amounts of food to mosquito larvae would they grow faster or slower

Horseshoe Crab Density

This project studies how density maximizes the growth of juvenile limulus polyphemus (Horseshoe Crabs)

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