Make a bear cave for your child to play and explore, learning about bears and winter hibernation.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Learn all about balance and motion as your child designs a corn maze!

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Help your child celebrate the summer and the sun by making a sandy seascape.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Explore the craters, maria, and highlands on the surface of the Moon! In this fun science project you'll create a 3-D model of the moon using paper mache.

Take a dive into the candy jar with this yummy science experiment.

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Every time a sound is produced it emits a sound wave. This experiment demonstrates how sound travels, using nothing more than a spoon and a string!

Lead your first grader on a nature walk ... with a scavenger hunt-style twist! They'll try to capture photos that correspond to paint chip colors.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

Put an oatmeal box, a flashlight, and some construction paper together and you have the makings of an incredibly cool bedroom planetarium!