Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

Make sourdough bread...and learn some colonial history and modern science in the process!

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Kids will discover the meat science behind the meat they eat, and find out how to use safe chemistry to make meat more tender.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

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

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This science fair project idea provides evidence that air is everywhere and takes up space.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

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.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

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.

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

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

Try this chemistry experiment with your curious kid and get some "shocking" results!

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

An home science experiment for older students that teaches about the science behind heat.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

This project uses science and art to help students learn and teach others about Earth's endangered and extinct species.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.