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léger et adapté à un usage intensif
scientific studies have repeatedly shown that students aged 9 and under often struggle to visualize abstract concepts such as arithmetic
separated by a bar dividing the single-unit beads from the five-unit bead
ils peuvent visualiser comment marchent les différents exercices
Boulier chinois - 13 rangées - rose Abacus Universe:Boulier Japonais Professionnel - Soroban léger et adapté à unFeatures Size: 9. 5 x 25 cm 13 rows Made from high quality ABS plastic (non toxic) Designed for use by children
US$ 20.00
US$ 10.00
US$ 80.00
US$ 12.00
