This Abacus for the Blind is a Cranmer-style abacus used by blind children to gain an in-depth understanding of numbers and mathematics, and by blind adults to perform quick calculations.
The Abacus for math has 15 rods with 4 beads on top column and 1 bead on lower column. Resistant Backing.
•Abacus for the Blind perfect for teaching children and for adults to do quick calculations
•Abacus for Math - Color may vary
•15 rods with 4 beads on top column and 1 bead on lower column
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