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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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1 jan 1801 ano - Blackboard Created
Descrição:
students used "slates' before James Phillips created blackboards.
Adicionado na linha do tempo:
American Education
By
shakira Mills
22 set 2022
0
0
166
Data:
1 jan 1801 ano
Agora
~ 224 years ago
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