Create a self-portrait from natural materials in this collage craft activity!

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

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

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

This science fair project idea explores alcoholic fermentation at work by making your own soda.

This science fair project idea determines which method of hand cleansing is the most effective.

Help your child plant a "tea garden": a garden made of herbs for making teas.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

This science fair project investigates why the number of visible stars changes from place to place.

This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.