Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

Deck the halls with last season's Christmas lights for a spectacular and electrifying science activity.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

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

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

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

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

Help your child celebrate the summer and the sun by making a sandy seascape.