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Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

This science fair project idea produces sounds by creating vibrations using different objects.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

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

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

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

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

This science fair project idea experiments with spinning color wheels and optical illusions.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

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

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.