Dig into the physics of pool to explore some cool applied math and learn about what happens in an elastic collision of equal masses.

Do people only "hear" what they want to hear? Explore pareidolia and psychoacoustics with this easy science fair project that pits melody against white noise.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Kids will enjoy this cool demonstration of Newton's Third Law and the conservation of linear momentum.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

What does yeast eat? Sugar, of course. But yeast also has some powerful enemies in the form of antifungal agents! Kids test them out in this fun yeast lab.

Science fair project that determines what percentage of air is made up of oxygen by examining the chemical reaction between oxygen and rust.

This science fair project idea explores what common compounds can be easily separated out in a centrifuge.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

Free science fair project idea that examines cheating in school-age children. Project involves a task in which children are tested on various tasks.

Which battery lasts the longest? In this science fair project, kids will test popular brand name batteries like Duracell and Energizer against generic brands.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

This science fair project idea investigates how images are influenced by changes in light.

Determine if picking up fallen food in 5 seconds or less prevents the transfer of bacteria from the ground.

A fun, life science sxperiment idea idea involving strategies for keeping birds away from crops using a distress call. What kind of distress call works best?

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

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

This science fair project studies whether DSLR and Point-and-Shoot cameras work the same way under all conditions.

This science fair project idea determines whether the older population prefers darker, duller colors rather than bright and lush colors.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This project explores differences in people's reactions to images in color and images in black and white.

This science fair project idea explores how water and ice can change the form of rocks.

Have you or your child ever heard that nursery rhyme and wondered just what curds and whey are anyway? Do this simple experiment together to find out!

Help your kindergarten science maven explore the water cycle without getting everything wet.

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.