Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

Use sticks and stones to create create an outdoor version of tic-tac-toe!

This plaster fossil activity is a fun supplement to preschool science. Use plaster to make imprints of your child's handprints, footprints and other objects!

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

Kids grow sunflower greens from seeds for a hands-on gardening experience in this kindergarten life science activity.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

It's easy to plant your own in-home container garden! This planter contains pizza-themed herbs and is a perfect early gardening activity for kindergarteners.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Help your kids fall in love with nature by making a simple clay bird bath. Set it up in your yard and watch the animals venture in for a sip of water.

In this project children practice the scientific method while playing with puffy paint.

Give your science savvy kindergarten a lesson in plant science with this fun carnation experiment.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this science fair project, young children notice and track changes in trees throughout the year.

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

Can't make it to the beach? Bring the science of ocean waves home with this fun earth science-related craft.

Introduce your child to the wonders of colorful chemistry with this simple food coloring project.

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

Teach your child about using pumps to move water in this simple and educational preschool science activity!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Your kindergartener will have a blast helping you craft these fun, eco-friendly potted place cards.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Your child can create his own texture tree, experimenting with design during the process. The result will be a beautiful addition to your holiday decorations

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.