This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Design and build a scale model representing living tree architecture. Then build a full-size version using one or more lives trees, and test your creation.

Using plants and other items from the outdoors and clothing they already own, your kids can dress up as any one of the four seasons or simply as a Garden.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

Would you be able to tell the difference between colored contacts and natural eyes from a normal distance? Find out in this science fair project!

Do dogs understand English? Kids will find out with one of our favorite dog science fair projects that tests how dogs process human language and other cues.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This project examines whether sugar substitutes are as sweet as real sugar.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Engineers in training can get started with this simple wheel-and-axle construction activity.

This science fair experiment idea's objective is to understand the general concept of an acid and a base.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.