Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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!

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

The objective of this science project is to determine the length of time for different seeds to germinate.

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

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

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

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

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!

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

Is it a square or a circle? See if you can trick your friends with this zany science project!

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

This science project explores the concept of being opaque or clear. Can you make something clear opaque? Or something opaque clear?

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!

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

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.

Use pepper and soap to discover some fun facts about the properties of water.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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.

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