Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

This science fair project idea determines the probability of a coin landing heads or tails.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

Make edible amber fossils with your second grader to explore the fascinating world of science!

Construct and experiment with a periscope using reflected light rays to gather an image.

Illustrate the idea of light refraction with this exciting and mystifying experiment.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

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!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Experiment with the wonders of pressure and condensation by crushing a soda can with nothing but air and water!

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

The goal of this science fair project is to attempt to build a perpetual motion machine and analyze the Laws of Thermodynamics.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

Learn the anatomical and physiological differences between central and peripheral visual systems.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

With this hands-on activity, you'll show how fall colors are hidden in the leaf all year long!

Check out this cool science fair project idea to explore the relationship between pulse rate and blood pressure in healthy people.

Your kindergartener will make prints of his favorite fruits and vegetables and learn how to organize and assemble his very own book.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.