This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

This science fair project idea investigates the difference in reaction times between boys and girls.

A simple science experiment exploring the physics of water pressure that's been amazing people since Medieval times.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

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 science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

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!

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

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.

This science fair project idea explores substances that cause a bubble to last longer.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.