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

This project determines what category of person is most likely to be ticklish.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

Think you can blow up a balloon without using your mouth? This isn't just a cool trick, it's also a great way to introduce chemistry and biology concepts.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

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

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

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

The project investigates how water and movement affects erosion.

Engineers in training can get started with this simple wheel-and-axle construction activity.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

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

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

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.