Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

Here's a simple craft activity that can help your youngster better visualize the life cycle of a frog as a circle.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

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

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

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

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

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

This science fair project idea examines whether boys and girls differ in reflexes.

Plants and light seem to be good buddies, but how far does the friendship really go?

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?