The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Check out this cool science fair idea on why hard fruits become soft and learn how to compare the sugar content between ripe and unripe fruits.

This experiment provides a graphic illustration of the chemical reaction that occurs when you activate a hand warmer.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Science fair project that compares the properties of different fabrics to determine whether natural or synthetic fabrics are better at wicking away moisture.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

This science fair project idea demonstrates sonar mapping of the ocean floor.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

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

In this science fair project, students create their own miniature salt flats at home.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.

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

Kids love the dramatic Mentos and Diet Coke experiment conducted in this awesome science fair project.

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

Examine the effect of pressure on carbonation in soda.

This science fair project idea determines whether volunteers remember more information presented orally or visually or kinesthetically.

This plaster fossil activity is a fun supplement to preschool science. Use plaster to make imprints of your child's handprints, footprints and other objects!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Is it a square or a circle? See if you can trick your friends with this zany science project!

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

This science fair project idea measures physical dexterity as a function of temperature.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.