The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Make a wish upon a tree with this craft that also helps your child learn more about Chinese culture.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

This season is a great time to explore the many shapes, sizes, and species of evergreen trees. Download our "field guide" activity and learn more!

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.

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

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Looking for a fun summer adventure? Learn what it was like to be a prospector during the California Gold Rush by panning for gold in a local creek.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."