In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

This science fair project teaches students the differences between fruits and vegetables.

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

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

Do you think heat can affect a plant's growth rate?

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Introduce your child to the amazing, almost magical phenomenon of static electricity!

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.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

Create your own cloud with an activity that will explain how important concepts such as evaporation, condensation, and precipitation work.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

This science fair project idea examines the reason boats are shaped and engineered.

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

Explore if planting seeds in a certain direction will affect how fast it germinates.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.