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conçu pour les calculs complexes tout en offrant une prise en main facile
L'arithmétique est un élément abstrait
Explanation of the Chinese Abacus
the abacus offers many advantages for children’s learning
Le boulier : un outil antique qui continue d'être adéquat encore aujourd'hui
Boulier chinois en bois - 15 rangées - bordeaux Boulier-japonais conçu pour les calculs complexesFeatures 42. 6 x 17. 1 x 3 cm Made from solid wood Burgundy paint with a satin varnish finish Beautiful Chinese wooden abacus with 15 rows of beads. Its solid wood construction and burgundy satin paint enhanced with a glossy varnish make it an elegant and striking counting tool. History of the Chinese Abacus The abacus is a calculating tool used in China since the Han dynasty (206 BC 220 AD). It was also known as the counting frame. The abacus
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