This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Word color association is just a fancy way to talk about the way we connect colors with words.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

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

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Using a toy race car kids create a visual model of the Doppler Effect.

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

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

This biodiversity project examines the biodiversity in your own backyard.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.