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!

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

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

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

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.

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.

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!

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!

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!

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.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

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!