- An Instrument For Performing Calculations.
- Calculations Performed By Sliding Counters Along Rods.
- Its Primary Purpose Is To Teach Arithmetic To Children.
- One Colour Unit.
- 100 Beads.
$ 54.00
$ 0.00
$ 54.00
$ 0.00
$ 44.00
$ 37.40
$ 69.28
$ 53.29
$ 14.99
$ 99.97
$ 34.99
$ 98.00
$ 52.04
$ 40.03
$ 24.99
$ 70.81
$ 54.47
$ 85.92
$ 66.09
$ 60.09
$ 46.22