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1 gen 1930 anni - Overhead Projector

Descrizione:

In the United States, the overhead projector was used to train the US military, but has since been adapted into schools and organizations. The effectiveness of a common screen facilitates learning, making it an effective tool.

Aggiunto al nastro di tempo:

Ed 131 Technology Timeline

ByVivian Chinwen Huang
29 nov 2020
0
0
452

Data:

1 gen 1930 anni
Adesso
~ 95 years ago
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