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1 gen 1 anni - Abaco

Descrizione:

Consiste en un cuadro de madera con barras paralelas por las que corren bolas movibles, útil también para enseñar estos cálculos simples.
es de hace mas de 3000 años

Aggiunto al nastro di tempo:

Time Line

ByBerta
23 ott 2017

Data:

1 gen 1 anni
Adesso
~ 2024 years ago
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