Test whether plants can grow without sunlight and water.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

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.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This science fair project idea produces sounds by creating vibrations using different objects.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

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

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

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 tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science project teaches students to classify different shapes of leaves.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

In this Bernoulli's Principle experiment, you'll learn how an increase in the speed of a fluid, like air, decreases pressure.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

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

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!