An hour glass, also known as a sand clock, keeps time. In this activity, your child will make her own sand clock and measure the time it keeps.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

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

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

In this cool science fair project, kids apply basic algebra to learn how to make a PVC pipe instrument while exploring concepts like frequency and resonance.

In this science fair experiment, students learn about the scientific principles behind Doppler ultrasound.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

In this cool sound resonance experiment, learn about frequency and pitch, and use a tuning fork to calculate sound velocity in air.

Here's an investigative activity in which your child will discover real-world names and uses for sugar and find out how it is hidden in many different foods.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Set your teen on the beat in a real world "crime scene" investigation. Can he tell whose fingerprints are on a drinking glass?

This science fair project idea produces varying pitches of sound.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Here's one way to recycle: turn a tuna can into a mini barbecue and teach your child the power of resourcefulness!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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