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1 gen 1930 anni - Overhead projectors are used in the classroom

Descrizione:

Overhead projectors were first used by the military, but quickly became the go-to source of technology in classrooms for decades

Aggiunto al nastro di tempo:

Technology in Schools

ByKris Lessinger

2 nov 2017

0

0

341

Data:

1 gen 1930 anni

Adesso

~ 95 years ago

Immagini:

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