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17 ore 59 min, 14 giug 1955 anni - It became apparent that Educational Films were not having expected impact - teachers were not using them.

Aggiunto al nastro di tempo:

History of Instructional Technology

ByAlexis
8 feb 2018

Data:

17 ore 59 min, 14 giug 1955 anni
Adesso
~ 68 years ago
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