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

First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

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

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

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

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.

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.

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

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

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!

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

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

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

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

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

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.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

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

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!

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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

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

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

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