33
/pt/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
4743239
423828
2

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:

Data:

1 jan 1930 ano
Agora
~ 95 years ago