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5 mai 1841 - Blackboard

Description:

Introduction of the blackboard was difficult at first just like today's new technology. But it soon was featured in all classrooms and is still used today.

Ajouté au bande de temps:

Educational Timeline

Bymolly
4 déc. 2017

Date:

5 mai 1841
Maintenaint
~ Il y a 183 ans
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