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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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31 maio 1900 ano - The invention of lead pencils
Descrição:
The invention and mass production of lead pencils and white paper, replaced the classroom slate.
Adicionado na linha do tempo:
The history of Ed Tech
By
julia cline
4 dez 2017
0
0
434
Data:
31 maio 1900 ano
Agora
~ 125 years ago
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