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What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

The purpose of this science project is to determine whether the amount of air in a soccer ball affects how far it goes when kicked.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

This science fair project idea determines whether eating before or after exercise is more beneficial to health and performance.

Find out the differences (if any) in the frequencies of voices produced from a computer, from a phone, and directly coming out of the voice box of a human.

Compare different remedies for cooling the mouth after eating spicy food.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

Science fair project that uses iodine solution to demonstrate how starch is turned into sugar when it is chewed in the mouth.

It's the day before the test, and you still have a ton to memorize! Sound familiar? Test memorizing techniques to help yourself out next time.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

This awesome diffraction grating experiment puts high school students' applied math skills to the test by having them calculate the wavelength of laser light.

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This experiment will evaluate if the environments that people work in affect their speed and accuracy in performing mental tasks.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Show your middle schooler how a quick whirl of spinach in the blender will reveal the cobwebby "stuff"--or DNA--of life!

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

We're all familiar with the idea that some songs âget stuck in your head.â This experiment explores the validity of that claim.