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1 Jan 1923 Jahr - The radio was first used by Haaren High School in New York City in the classroom for teaching.

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By Duncan Rawlinson (Flickr.com - image description page) [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

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A Brief History of Educational Technology

18 Sep 2017

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1 Jan 1923 Jahr

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~ 102 years ago

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