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.

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!

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Believe it or not, the common spud has enough electrochemical energy to power a small digital clock.

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

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

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

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

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

Make a spring collage with your child to get them outside and those creative juices flowing!

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Engineers in training can get started with this simple wheel-and-axle construction activity.

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Cleaning can be a chore, but not with this sudsy experiment!

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

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.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

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

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

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.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.