25
/fr/
fr
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
March 31, 2021
4743239
423828
2

1 janv. 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.

Ajouté au bande de temps:

il y a 4 mois
0
0
111
Ed 131 Technology Timeline

Date:

1 janv. 1930
Maintenaint
~ Il y a 91 ans
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