In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

This project compares the strength of one, two, and three-ply toilet paper.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

Find out whether a longer airplane will fly farther or a wider paper airplane.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

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

This science fair project idea explores substances that cause a bubble to last longer.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

Are your taste buds up for the challenge? Put tongues to the test with this science fair project that examines who enjoys sour flavors more, adults or kids?

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

Kids will make predictions about cricket behavior by conducting this fun and easy experiment which simulates different environments for crickets.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This science fair project idea investigates the difference in reaction times between boys and girls.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science fair project idea explores whether talking to a plant will help it grow.

Make a backbone model to explore human anatomy and life science.

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.