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jan 1, 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.

Added to timeline:

Education Timeline- EDU221

ByBrookley Buchanan
9 Mar 2020
0
0
287

Date:

jan 1, 1930
Now
~ 96 years ago
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