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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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31 mayo 1900 año - The invention of lead pencils
Descripción:
The invention and mass production of lead pencils and white paper, replaced the classroom slate.
Añadido al timeline:
The history of Ed Tech
By
julia cline
4 dic 2017
0
0
433
fecha:
31 mayo 1900 año
Ahora mismo
~ 125 years ago
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