This science fair project teaches students the differences between fruits and vegetables.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

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?

This science fair project idea explores whether white light can be separated into different colors.

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

In this science fair project, young children notice and track changes in trees throughout the year.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

This biodiversity project examines the biodiversity in your own backyard.

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

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

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

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.