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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.

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

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?

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

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.

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

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

See how to write a love song simply in this kid-focused tutorial. Learn how to write a love song for Valentine's Day and beyond.

Bring barnyard fun to a rainy day by making this simple pig nose, or make several noses and round up two of your child's friends to act out Three Little Pigs.

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

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

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

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

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

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

Learn how to make an anemometer with step-by-step instructions in this cool 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.

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

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

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

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.

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

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

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

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

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.

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.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

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