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5 sept 2007 año - I was taught how to do easy solving problems

Descripción:

At school, my teacher showed me a shortcut on how to solve math problems such as using my fingers to count. The stage is called CONCRETE OPERATIONAL.

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Timeline Project by Anthony Perla

ByAnthony Perla

9 nov 2017

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5 sept 2007 año

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~ 18 years ago

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