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Ce puzzle se compose de 18 surfaces
Dimension : 17 x 17 cm env
un mûrier et un chêne se développent à travers différentes étapes
Tous les puzzles sont dans un cadre en bois de 40 x 28 cm
• drei rosa Kästen
Psychoarithmic: Hard Cover (anglais) educo-0-3 Ce puzzle se compose dePsychoarithmetic 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
