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

Invite your kindergarten scientist to conduct this color mixing experiment to discover which primary hues make a rainbow of secondary colors.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

Blend science and math to explore a very important first grade social studies question: does our planet contain more land or more water?

Satisfy your kindergartener's fascination of different sounds with this easy science project, where they'll use their ears instead of their eyes to identify sounds!

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

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

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

In this activity, your child will be challenged to make a tower using paper cups.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.