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What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

In this project children practice the scientific method while playing with puffy paint.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Blend art and science in this hands-on activity that shows your kindergartener how primary colors combine to make secondary colors.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This homemade parachute toy is incredibly easy to build. Plus, it gives kids an excuse to investigate and experiment...the backbone of kindergarten science.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Throughout history, people have used song as a teaching and memory tool. This project explores whether song improves a person's ability to retain information.

Make sourdough bread...and learn some colonial history and modern science in the process!

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.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

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!

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

The weather is a key kindergarten science concept. With this activity your child will learn about wind direction and create a self portrait, too!

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Teach your little scientist about the amazing powers of gravity by comparing the falling speeds of two yummy fruits

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

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.

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

Use this fun activity to make an optical illusion picture that helps your kindergartener explore the sense of sight, and sharpen his observation skills!

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

This project examines what types of objects burn and which burn faster and cleaner.

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.