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tout en s'amusant
Boulier: 9 x 6
they no longer need to memorize solutions in short-term memory
Perfect for enhancing your concentration and mental calculation skills
Tokyo mathematicians developed the modern soroban by designing a new frame and adding beads
Boulier chinois - 13 rangées - Jaune Boulier-chinois tout en s'amusantFeatures Size: 9. 5 x 25 cm 13 rows Made from high quality, non toxic ABS plastic Designed specifically for use by children
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US$ 13.50
