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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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.

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

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

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

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

This science fair project idea investigates whether plants can survive being frozen.

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

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

Making your own glass cleaner is easy, effective and inexpensive!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea provides evidence that air is everywhere and takes up space.