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

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

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

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

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This science fair project idea determines what household items are good conductors of electricity.

This science fair project idea explores how length affects the weight a bridge can hold.

Make a backbone model to explore human anatomy and life science.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This science fair project idea determines what household items are good conductors of electricity.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

This science fair project idea demonstrates that plants give off water.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This science fair project idea investigates how the shape of an object affects drag.