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How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

In this fun experiment, we'll find out how color affects heat absorption!

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

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.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

Put an oatmeal box, a flashlight, and some construction paper together and you have the makings of an incredibly cool bedroom planetarium!

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

It's easier than you think to make homemade play dough -- just a few pantry staples makes a natural version of the toy that kids have loved for generations.

Introduce your child to science with something they see everyday--their shadow!

Create a self-portrait from natural materials in this collage craft activity!

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

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

What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

Invite your kindergarten marine biologist to practice in scientific identification and categorization while creating a lovely treasure box.

This project investigates the affect of storage temperature on microwave popcorn.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

This project examines what types of objects burn and which burn faster and cleaner.