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 down to the rubber with this science project that tests the effectiveness of different types of erasers.

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!

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

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.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

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.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!