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Science isn't ho hum anymore when it involves building catapults to teach your fifth grader about projectile motion.

This science fair project idea provides evidence that air is everywhere and takes up space.

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!

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

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.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

Do you think heat can affect a plant's growth rate?

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

This science fair project idea explores the different properties & interactions of sugar molecules.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

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

The weather is a key kindergarten science concept. With this activity your child will learn about wind direction and create a self portrait, too!

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 project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

In this fun experiment, we'll find out how color affects heat absorption!

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

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

First graders are learning basic addition and subtraction math facts. Practice in the sandbox with this fun outdoor math activity!

This science fair project idea determines what household items are good conductors of electricity.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Your child will decorate a headband with any bugs they can think of, then they'll add antennae so they can pretend to be a bug!

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!