This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

Find out whether a longer airplane will fly farther or a wider paper airplane.

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

This experiment investigate whether children in different age groups learn better from a computer program or a human teacher.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

Help your child celebrate the summer and the sun by making a sandy seascape.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

Illustrate the idea of light refraction with this exciting and mystifying experiment.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

In this science experiment, test the pH of soil surrounding a gas station to determine if gas stations have a negative effect on the environment.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

Science fair project that examines how cell membranes allow the inward and outward flow of materials as demonstrated by eggs.

Science fair project that examines various techniques for removing wrinkles from polyester garments to understand why polyester garments become wrinkled.

This science fair project determines the quality of a given product.

The objective of this science fair project idea is to determine whether frozen vegetables have more nutrients than canned vegetables.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

This science fair project idea determines if the color of light affects the growth of plants.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

This fun science fair project idea helps students learn how acid rains are formed and explore how acid rain damages the environment.

Science fair project that determines whether brain size is correlated with intelligence.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.