Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.

Cleaning can be a chore, but not with this sudsy experiment!

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.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

Discover whether the color of text correlates with ease and speed of reading.

This science fair project idea discovers the effect of (high) heat on animal cells.

Create a double-slit interference out of cardboard. Produce an interference pattern that demonstrates the wave and particle characteristics of light.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project idea investigates if fats add to the flavor of food.

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

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Science fair project which tests which antacids are most potent by measuring how well they neutralize the acid in lemon juice.

This project will examine the relationship between wind velocity and direction and the distance a baseball travels.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

This science fair project idea provides evidence that air is everywhere and takes up space.

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.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

Explore whether pianists have the tendency to type faster than non-pianists.

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.