How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Is it a square or a circle? See if you can trick your friends with this zany science project!

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

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

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

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?

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

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!

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Science fair project that examines condensation and the conditions needed in order for dew to form.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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