33
/fr/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
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:

Date:

1 janv. 1930
Maintenaint
~ Il y a 95 ans