How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Here's a science activity that lets a first grader use an empty dish detergent bottle to create his own fountain as he explores air pressure.

This classic children's game demonstrates how sound travels through air vs. through a solid.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

This spider mobile activity encourages learning about the science of motion, air currents and art.

This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Here's a science experiment that gives your kids a chance to see how fire needs oxygen to burn, with a little math and writing practice thrown in.

The perfect activity for a rainy day, or any time your little one moans, "Moooo-oom, there's nothing to do!"

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

Enjoy the fragrant scents of the holiday season with this pomander activity. A perfect arts and crafts project for preschool or kindergarten age children.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

In this experiment you will replicate the mummification process by making a hot dog mummy.

This science fair project idea demonstrates that plants give off water.

Celebrate the popular holiday Diwali with a craft! Make a homemade diya lamp to welcome light over darkness.

Enjoy the beauty of winter from the comfort of your home with this first grade art activity: make sparkly snowflake sculptures using modeling clay and glitter.

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

This science fair project idea investigates how the shape of an object affects drag.

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

Engineers in training can get started with this simple wheel-and-axle construction activity.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

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

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

Not only is homemade wrapping paper pretty, but by experimenting with decorative tools, kids are also doing science, art, and small-motor muscle building.

In first grade, children are introduced to fractions. Here's a recipe that combines fraction practice with winter fun and lets kids actually paint the snow!