In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

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

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.

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

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.