This project compares the strength of one, two, and three-ply toilet paper.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

In this project, waves of vibrations are experimented with using water in glasses.

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

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

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.

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.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This year on Mother's Day, try this gift project that brings together an appreciation for gardening with a hands-on lesson in art history.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

What better way to celebrate spring than with a fabulous flower party? Pack the day with fun flower activities and treats for a truly springalicious event!

Find out whether a longer airplane will fly farther or a wider paper airplane.

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!

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

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!

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

This first grade science activity brings the green grass of early spring inside while teaching your child about the cycles of growth.

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

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea explores whether talking to a plant will help it grow.

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

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