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jan 1, 1930 - Overhead Projector

Description:

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.

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Ed 131 Technology Timeline

ByVivian Chinwen Huang
29 Nov 2020
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452

Date:

jan 1, 1930
Now
~ 95 years ago
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