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dec 31, 1969 - THE HAND - HELD CALCULATOR

Description:

Se utilizó par facilitar la enseñanza de las matematicas en las escuelas.

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HISTORIA DE LA TECNOLOGIA EDUCATIVA JOHANA

Byjohana ruales tabla

30 Oct 2018

0

0

544

Date:

dec 31, 1969

Now

~ 56 years ago

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