This science fair project idea produces sounds by creating vibrations using different objects.

This science fair project idea explores the egg's thin membrane.

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.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

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?

Help children understand the power of germs and the importance of hand washing with this visual activity that introduces the concept of scientific inquiry.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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

This science fair project idea demonstrates that plants give off water.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.