Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

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

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

This science fair project idea examines how well individuals can remember a story they were told and how accurately they pass that story along.

This science fair project idea determines if the color of light affects the growth of plants.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This simple experiment serves as an introduction to the greenhouse effect.

This science fair project idea investigates the hardness property of minerals.

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.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

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!

In this project children practice the scientific method while playing with puffy paint.

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.