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.

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

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.

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.

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

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

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.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.