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

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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 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.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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

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.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

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