Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

This science fair project idea investigates which objects float and sink in honey, water, and oil.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

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!

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

Test your friends to find out if you can replicate the placebo effect's incredible results.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

This science fair project idea provides evidence that air is everywhere and takes up space.

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.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

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

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

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

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Make a backbone model to explore human anatomy and life science.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.