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7040.eth š©
@jn
Who learnt math with this in the classroom?
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Lawal Mujeeb
@ancestose
What's this?
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7040.eth š©
@jn
This is an overhead projector. You put a transparent paper on it, and it project whatever is written by hand on the wall. Maybe it's still in use today?
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Lawal Mujeeb
@ancestose
Thanks for the response
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