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

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

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.

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

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

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

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

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?

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

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.

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

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

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

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Examine the effect of pressure on carbonation in soda.

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

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

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.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

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.

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

This science fair project idea explores the egg's thin membrane.

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

This project investigates whether chewing gum can help a majority of people with focus and concentration.

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

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.