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

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 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.

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!

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.

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 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.

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

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Teach your first grade scientist the difference between liquids and solids using maple syrup.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Plants and light seem to be good buddies, but how far does the friendship really go?

Start your toy engines -- this is going to be a fast and friction-filled race!

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.