Chinese 13-Digit Abacus – Mathematical Soroban
Design: 13 rods, 7 beads per rod (2 upper, 5 lower)
Material: Durable ABS plastic or wood options
Function: Supports addition, subtraction, multiplication, division
Use: Educational tool for kids, students, or abacus collectors
Benefits: Enhances mental math, motor skills, and number sense
Size: Compact, portable (approx. 24x7x2cm)
A classic, functional abacus for learning and mastering arithmetic!