What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This science fair project idea investigates how magnetism can defy the force of gravity.

This science fair project idea investigates how the shape of an object affects drag.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

Do different types of oil mix or stack? Find out in this science fair project idea!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

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.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

Explore the chemistry of latex polymers with this outrageous, hilarious science activity.

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

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Do you think heat can affect a plant's growth rate?

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.