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How do organic materials become soil? This science experiment measures what materials biodegrade.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

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

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Clouds are formed when warm and cold air meet. Here's a way for kids to see it all up close!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

This science fair project idea explores whether white light can be separated into different colors.

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Engineers in training can get started with this simple wheel-and-axle construction activity.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Take a closer look at the soil that surrounds us, and give your child a lesson in Geology 101!

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Teach your child how butter is created by shaking up cream the old-fashioned way.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

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