Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

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

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Using a toy race car kids create a visual model of the Doppler Effect.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Ever wonder how those kooky kazoos work? Get to know the science behind this silly instrument by making your very own kazoo!

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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

This science fair project idea investigates whether air has mass and weight.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

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.