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1 jan 1930 ano - Overhead Projector

Descrição:

A projector that was originally used by the U.S. military for training purposes was then distributed to schools for visual aides that can be seen by all students in the classroom.

Adicionado na linha do tempo:

Education Timeline- EDU221

ByBrookley Buchanan
9 mar 2020
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0
274

Data:

1 jan 1930 ano
Agora
~ 95 years ago
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