Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.