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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

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

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

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.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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

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

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

In this science fair project, students create their own miniature salt flats at home.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

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!

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.