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.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

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.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

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.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

Teach your child about healthy foods and how to make a meal that is good for them with this fun activity that you both can do together.

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Make a lei and bring a touch of the tropical lifestyle into your home!

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

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.

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Does your child love learning about dinosaurs? Does he like digging around in search of hidden treasures? In this fun activity he'll do both!