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.

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

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

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.

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

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.

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?

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.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

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.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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 project idea explores whether white light can be separated into different colors.