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Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

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 science fair project idea investigates the hardness property of minerals.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

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

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

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

This science fair project idea explores the egg's thin membrane.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science fair project teaches students about wilting and browning of salad greens.

This surprisingly good glue recipe comes from common kitchen items.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Learn all about balance and motion as your child designs a corn maze!

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.

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

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!