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

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

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

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

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

When critters protect themselves by taking on the patterns of nature, it's called "camouflage." Play this camouflage matching game with your child!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

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

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Help your child add some flair to the family garden with pencil pinwheels!

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

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.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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.

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.

Science fair project that identifies the differences between soils from different environments and attempts to figure out why those differences exist.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

Do different types of oil mix or stack? Find out in this science fair project idea!