What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This science fair project idea compares biodiversity between drops of water.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this science project, the center of gravity is explored.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project teaches students the differences between fruits and vegetables.

Make a backbone model to explore human anatomy and life science.

This science fair project idea investigates how color affects temperature.

This science fair project idea explores the egg's thin membrane.

This science fair project idea demonstrates that plants give off water.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea investigates the hardness property of minerals.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project idea examines the reason boats are shaped and engineered.

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

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

This science fair project will help students learn about non-vascular plants, such as mosses.

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

This science fair project idea explores whether white light can be separated into different colors.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea determines what household items are good conductors of electricity.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.