What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Enter the buzz worthy world of bee watching and find out what time bees like to wake up!

How powerful is the reaction between baking soda and vinegar? Find out here!

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

This science fair project idea investigates if fats add to the flavor of food.

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

This science fair project idea examines which type of insulation holds in the most heat.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Challenge your learner to design and build a city of their own in this creative engineering activity.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea compares biodiversity between drops of water.

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

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.