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In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Hero's Engine: Example of Newton's Third Law

This science fair project idea produces varying pitches of sound.

Changing the Pitch of Sound

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

Dye Eggs with Onion Skins

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Ping Pong Ball Anemometer

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Ivory Soap Experiment

Here's a pressed leaf card project that puts science and writing together for your second grader.

Create Pressed Leaf Cards

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

Create a Polar Bear Habitat!

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Jane Goodall and Nature Journaling

When you see those sunscreen "protection levels," what does that really mean?  Try this experiment to find out.

Sunscreen Experiment

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Skin Science!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Heating Sugar

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Layers of the Earth Project

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Star Clock

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

How to Make a Steam Powered Rocket Boat

Put your young paleontologist&#39;s puzzle-solving skills to the test by having her hunt for dinosaur bones and then assemble them to create dinosaur skeletons.

Dinosaur Skeleton Hunt

Try this chemistry experiment with your curious kid and get some "shocking" results!

Electric Science: Make a Battery!

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

The Rings of Saturn: A Scale Model

Is it a square or a circle? See if you can trick your friends with this zany science project!

Shape Words

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

Coriolis Effect and Hurricanes

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

What Causes Dilated Pupils?

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

Mini Waterfall

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Design Challenge: Gumdrop Towers

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Pumpkin Investigation

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.

Learning Why and How to Compost

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Cleaning With Lemon Experiment

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

Plastic Wrap Science Fair Project: Polymer Permeability

This science fair project idea experiments with spinning color wheels and optical illusions.

A Trick for the Eyes: Color Wheels and Optical Illusion Tops

The goal of this project is to create an exciting topographical map out of dough.

Create a Contour Map

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Bee Homes: Which Nest is Best?

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Drum Size and Pitch

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