New: Abacus
Plastic abacus with case: $12.00
This 15-digit soraban abacus features a 1:4 bead layout (one bead worth 5 on the top deck, and four beads each worth 1 on the bottom deck). The orange plastic beads are laid on top of a black velvet background, which holds them firmly in place. The abacus is 6⅜″×3⅝″, and comes with a white plastic case (7¾″×4″).
Also new: How to Use an Abacus
In braille or BRF: $10.00
An abacus is a deceptively simple calculating tool that has been used for thousands of years. This short booklet has instructions on how to use an abacus to count, add, subtract, multiply, and divide numbers.