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1 jan 1930 ano - Overhead Projector

Descrição:

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.

Adicionado na linha do tempo:

Ed 131 Technology Timeline

ByVivian Chinwen Huang
29 nov 2020
0
0
492

Data:

1 jan 1930 ano
Agora
~ 95 years ago
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