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

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

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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 fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

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

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

First graders are learning basic addition and subtraction math facts. Practice in the sandbox with this fun outdoor math activity!

In celebration of Earth Day, help your fifth grader write a poem from the Earth to its inhabitants.

Give your budding young observers a chance to discover simple machines at use in their own home.

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

Determine if gender affects the ability to identify different smells.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.