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

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Slip some science into storm watching with a homemade rain gauge!

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

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

Help your child make a beautiful homemade sandcastle that will last!

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

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

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

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?

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

This project can help prepare your child for a trip to the tide pools, or give him a way to remember some of the many creatures he saw during his visit.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.