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In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Here's a homemade bulletin board project to help your fourth grader's school year start off right.

In this design challenge, your child will create a parachute for a small toy using typical household items.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.