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.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Stir up some friendly competition with this tabletop bow and arrow craft!

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?

In this experiment, students find out what happens when a less-dense fluid interacts with a denser one, replicating the effect of cooler solid rock on magma.

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

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

In this science project, the center of gravity is explored.

In this project, waves of vibrations are experimented with using water in glasses.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

The project investigates how friction affects motion by using different surface textures.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

This science fair project idea examines liquids of different densities.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

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

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

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

This science project idea examines the effect of microwaving on various objects.

This science fair project idea examines the reason boats are shaped and engineered.

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!