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Dimensions: 23
Beads in the upper section are pressed on the rods while performing calculations using standard algorithms (which can be memorized)
Featuring a lightweight
Crafted with substantial wood
Boulier en bois d'écolier avec béquille - jaune Boulier-ancien Dimensions: 23Features 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
