Counter on a string Wissner

Discover the relationships between numbers with the innovative Wissner counter! This counter features a total of 100 beads in different colors, teaching young enthusiasts mathematics in a new and f... Show more
6,80 €
Shipping from 5,90 €
On the road · at your place 3. 10.
Product code: 514729-1
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Fast delivery from 5,90 €
6,80 €