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How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

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

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?

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

This project explores how and how much one family can reduce the amount of garbage they accumulate over a three month period.

This science fair project idea explores how far the average human can see.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

This experiment will determine how different kinds of light affects the strength of bakerâs yeast.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

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

This two-ingredient dough, sometimes called "moon sand," is a quick and cheap way to let kids explore their senses, build fine motor skills, and play.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Air resistance is a crucial factor when designing a parachute. In this science fair project, students find what type of material works best as a parachute.

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

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

Science fair project that examines the relationship between the size of a bubble and how quickly it falls. What is the correlation?