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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.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

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

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.

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.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

This science fair project idea explores substances that cause a bubble to last longer.

This project compares the strength of one, two, and three-ply toilet paper.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Check out this cool science fair project on identifying rocks and minerals for kids.

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

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.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Do you think heat can affect a plant's growth rate?

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

This classic children's game demonstrates how sound travels through air vs. through a solid.