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July 4, 2017 AT 2:00 am

Cup Speaker: Physics & Sound Science Activity #MakerEducation

CupSpeaker DSC 6607 H

Great project for a rainy summer day from the Exploratorium Teacher Institute Project.

Wind up a coil of wire, attach it to the bottom of a paper cup, hold a magnet nearby, and listen to the radio! You’ve made your own speaker.

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