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boîte en bois (34 x 20 x 6 cm)
it is constructed from specialized paper that is completely waterproof
la mesure du périmètre et de la surface et l'orientation spatiale
18 triangles
Contrôle de l'erreur intégré
Psychoarithmic: Hard Cover (anglais) educo-math boîte en bois (34 xPsychoarithmetic by Maria Montessori provides a view of the working of the human mind through the lens of exercises and study of mathematics (arithmetic, geometry, and algebra and their relationships), as well as applied mathematics in the form of measurement. The intention of the book, to forge a link between psychology and mathematics, is obvious from the title. The book demands that the reader attend to each and every detail while at the same time
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