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

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

How powerful is the reaction between baking soda and vinegar? Find out here!

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This experiment tests which gender is better at catching how a magician performs his tricks.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

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.

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

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

In this science fair project you will make a model of a cell membrane using very simple material.

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.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

This science fair project idea explores the different properties & interactions of sugar molecules.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This science fair project idea compares biodiversity between drops of water.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

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

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.