Ever wonder how those kooky kazoos work? Get to know the science behind this silly instrument by making your very own kazoo!

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

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?

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

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.

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

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.

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

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

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

Spend an afternoon outdoors and add a personal touch to clothes or other items of fabric by learning how to tie-dye.

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

Encourage a bit of mystery and intrigue by teaching your clever kid how to create and use secret codes.

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

Get kids excited about gathering their school supplies by teaching them how to make their own writing supplies!

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

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

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Learn how to make a mustache with these simple instructions. See how to make a mustache on a stick for Halloween, costume parties, or dress up.

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

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

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

Skip store-bought jewelry and show your stylish kid how to make her own beaded bracelets.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

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

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

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.

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

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?