Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

In this physics project, you'll learn how to find the maximum height of a projectile using some math and trigonometry.

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.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Learn how to make a trick-or-treat bag for Halloween. See how to make a decorative trick-or-treat bag with this Halloween craft tutorial.

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

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Show your fourth grader how to embrace a green lifestyle and enjoy the outdoors with a homemade, recycled picnic basket.

Help your third grader practice his writing skills and learn to operate household appliances like the washing machine or DVR with this Family How-to guide!

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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

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

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

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

Looking for way to help Japan? Start by making paper cranes! Learn how you and your child can show your support for Japan through the art of origami.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Help your 4th grader learn how to make a topographic map and strengthen key grade level social studies and math skills in the process.

This science fair project idea demonstrates how our fingers prune when in water.

Want to reuse materials that would otherwise get tossed in the trash? Show your third grader how to get crafty with old newspaper and fabric.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Consult astronomers for opinions and advice. Devise a mathematical argument regarding the probability of other planets supporting extra-terrestrial life.

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

Show your kindergartener how to craft a pretty Mother's Day jewelry box that's fit for the baubles of a queen (or at least an extra special mom)!

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

Discover the interactions of synthetic dyes and natural dyes on natural and artificially-made fabrics.

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?