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With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

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

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

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?

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

Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

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

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

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

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

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

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this free science fair project idea, kids will conduct an easy electrolysis of water experiment to test solutions of salt, baking soda, tap water, and more.

Check out this fun science fair project idea to learn how alkaline batteries convert chemical energy to electrical energy?

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!