Vendeur: Adena Montessori

Adena Montessori Trinomial Cube A161Montessori Sensorial Resources Guide

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Détails du produit

Item Name: Trinomial Cube
Item Code: A161
Size(cm): 14.5*15*11.8
Weight(kg): 1.1
Materials: Beechwood  
Age(month): 30-72
Certified by: ASTM F963    EN71 1 2 3
Montessori Materials of Sensorial | Visual Sense. A good gift for Children
A box with 27 small prisms, presenting the equation
(a+b+c)3=a3+3a2b+3a2c+b3+3ab2+3b2c+c3+3ac2+3bc2+6abc
The lid of the box presents the pattern in a flat form