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

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

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.

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.

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

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

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?

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

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

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.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

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

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

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

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Here's a science activity to help your child investigate how seeds are designed to travel.

This activity is a fun challenge for students who have just started learning to program educational robots.

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

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