Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

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!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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.

Teach your kids about entropy with this fun, easy exercise, and teach your money to dance while you're at it!

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

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

This easy aerodynamics activity is a simple way to introduce kids to the scientific method.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.

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

Teach your child how butter is created by shaking up cream the old-fashioned way.

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

How powerful is the reaction between baking soda and vinegar? Find out here!

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

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

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

Ready for takeoff! Make science fun and teach about levers and fulcrums as your child sends buttons flying.

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

Give your budding young observers a chance to discover simple machines at use in their own home.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

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