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15 Column Chinese Abacus V1
This is an abacus to teach arithmetic concepts. More specifically, this is a 15 rod Chinese abacus. The upper deck has 2 beads per rod with each bead being worth 5. The lower deck has 5 beads per rod with each bead being worth 1. You will…
- Pobrania
- 24
- Polubienia
- 4
- Ocena
- 0


