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1 janv. 1930 - Overhead Projector

Description:

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.

Ajouté au bande de temps:

Education Timeline- EDU221

ByBrookley Buchanan
9 mars 2020

Date:

1 janv. 1930
Maintenaint
~ Il y a 94 ans
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