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

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

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

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

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

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.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this science fair project, students use the streak test to tell minerals apart from each other.

This science fair project teaches students the differences between fruits and vegetables.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

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

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Discover whether cold or hot water from the faucet will boil faster on the stove.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

In this science fair project, kids will be able to see where germs reside on their hands while gaining insight into the benefits of thorough hand washing.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.