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

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

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Nature is the greatest teacher, and you can help facilitate the lesson! Here's how to create a supply backpack to get your kid ready for science action!

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

How do organic materials become soil? This science experiment measures what materials biodegrade.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students to classify different shapes of leaves.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This science fair project idea explores whether color affects a person's emotional state.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

Science fair project which evaluates different athletic shoes in order to find out whether any of them affect a person's ability to run.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

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

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!