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Beads in the upper section are pressed on the rods while performing calculations using standard algorithms (which can be memorized)
If you are interested in Montessori pedagogy for your child
the Japanese abacus is today the most widely used form in education
Couleurs vives et ravissantes originelles d’une peinture et d’un vernis non toxique
Dimensions: 23
Boulier en bois d'écolier avec béquille - jaune Boulier-ancien Beads in the upper sectionFeatures Size: 20 x 6. 3 x 1. 5cm Made from solid rubberwood Non toxic paint and varnish The traditional school abacus is the easiest abacus model for young children to learn and use. This abacus provides an easy and lasting foundation for mathematics. With its sturdy wooden construction, it is both durable and environmentally friendly. Bright, original colors achieved with non toxic paint and varnish. A solidly designed quality that stands up to
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