Engineers in training can get started with this simple wheel-and-axle construction activity.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Find out whether putting something on top of a plant will inhibit its growth.

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!

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

In this investigation, three different juices are tested to determine which juice contains the greatest amount of vitamin C.

In this project, a magnet is used to collect iron from breakfast cereals.

This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

This science research project challenges students to think of more effective lobster farming methods.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.