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

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

This science fair project examines how seeds hitchhike on animals and clothing.

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

People have favorite flavors, but what about ants? Which ant food is the most popular?

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

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.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

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

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

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

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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?

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!

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

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

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

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

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

This science fair project teaches students about wilting and browning of salad greens.

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

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