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

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.

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

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.

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.

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