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5 Sept 2007 Jahr - I was taught how to do easy solving problems

Beschreibung:

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.

Zugefügt zum Band der Zeit:

Datum:

5 Sept 2007 Jahr
Jetzt
~ 18 years ago

Abbildungen: