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?

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

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

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

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

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

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

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!

In this activity, your child will be challenged to make a tower using paper cups.

The objective of this science project is to determine the length of time for different seeds to germinate.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

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

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.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

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

In this project children practice the scientific method while playing with puffy paint.

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.

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.

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

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.