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1 ene 1939 año - Closed circuit television was first used for learning in Los Angeles public schools and at the State University of Iowa.

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By Wags05 at English Wikipedia (Own work) [Public domain], via Wikimedia Commons

Añadido al timeline:

A Brief History of Educational Technology

18 sep 2017

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1 ene 1939 año

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~ 86 years ago

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