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K-5

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Understanding Vibration and Pitch

Sometimes sounds are pleasant to listen to, like two voices singing in harmony or the trickling of water in a brook. Other times they are unpleasant, like a loud fire alarm or the screeching of chalk on a blackboard. Have you ever wondered what sound is and how we differentiate among various sounds? This video segment, produced for Teachers' Domain, includes sounds that many of us hear every day.

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