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1 jan 1841 ano - The chalkboard was introduced into the classroom.

Descrição:

By Tungsten (photo taken by Tungsten) [Public domain], via Wikimedia Commons

Adicionado na linha do tempo:

A Brief History of Educational Technology

18 set 2017

0

0

832

Data:

1 jan 1841 ano

Agora

~ 184 years ago

Imagens:

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