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This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Start your toy engines -- this is going to be a fast and friction-filled race!

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

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

This biodiversity project examines the biodiversity in your own backyard.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

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

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!

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

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

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

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