Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

This science fair project idea examines whether music has an effect on a person's ability to complete a simple task that requires concentration.

This science fair project idea shows kids how to grow mold and whether mold grows better in dry or moist conditions.

Learn about the factors that influence group conformity.

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

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

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.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

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

With Halloween right around the corner, find a way to use your brain and reward your tummy with a new type of science -- candy science!

The purpose of this science fair project is to build a basic radio.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

This fun middle school science fair project idea explores the process of respiration and determines whether boys and girls have the same lung capacity.

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

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Science fair project that determines whether brain size is correlated with intelligence.

Start your toy engines -- this is going to be a fast and friction-filled race!

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Check out this cool science project idea to explore the differences in feeding behaviors of birds and if other species of birds also have color preferences.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

Learn how to convert gravitational potential energy into mechanical energy in this fun science fair project idea.

This science fair project idea compares biodiversity between drops of water.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.