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

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Score a bull's eye with this cool science fair project on horizontal projectile motion. Guide a marble to its target and predict its trajectory using math!

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

In this experiment we use Scotch Guard to make sand that resists water.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

What is the Doppler Effect, or the Doppler Shift? The purpose of this science fair project is to determine how distance impacts the Doppler Effect.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

In this fun science fair project idea learn the difference between additive and subtractive color and why they are handled differently.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

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

Find out which kind of bubble wrap fares best when put in impact.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.