In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

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

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

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

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!

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

This science fair project idea investigates the hardness property of minerals.

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!

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!

This project tests the hypothesis that dark colors absorb more heat than light colors.

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

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

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.

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

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

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.