Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Determine how proficient you are at making estimations and learn how to make more reasonable estimates.

Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

The purpose of this science fair project is to determine which conditions and materials quicken the composting process to make the best compost.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Check out this cool middle school science fair project idea to find the difference between organically grown and commercial brands of foods.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

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

What is a barycenter? Kids learn how gravity and mass influence the orbit of binary systems like planets and moons or stars and planets in this cool experiment.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

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

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

This project examines germs and their spread in households. The goal is to learn how to stop the spread of germs and other diseases.

People have favorite flavors, but what about ants? Which ant food is the most popular?

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

High school kids learn about fruit fly ethology in this cool lab that determines fruit fly movement and behavior under different conditions. Check it out.