How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

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.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

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.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

How powerful is the reaction between baking soda and vinegar? Find out here!

Teach your child how butter is created by shaking up cream the old-fashioned way.

What is elasticity? Students will investigate how this concept applies to bouncing ball physics by testing the bounces of balls made out of different materials.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

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

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

This science fair project idea explores whether talking to a plant will help it grow.

This science activity will help your student explore the changes that occur to transform an egg from raw to soft to hard-boiled.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

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

Introduce your child to the amazing, almost magical phenomenon of static electricity!

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!