Yellow Mountain Imports 17-Column Soroban Abacus 26.7 cm (10.5 in) | Classic Math Tool for Mental Calculation

• Timeless Reliability: A calculator in its classical form, the abacus/soroban features a system used before written numerals, and is still used in parts of the world by merchants, traders, and clerks
• An Ideal Montessori Math Tool: Make math practice more effective; Using an abacus as a math manipulative is a great way to teach kids how to count, equate and compute mentally
• Modern and Durable: This 17-digit professional soroban abacus is made from quality ABS plastic and measures 10.5 x 2.5 x 0.8 inches (26.7 x 6.1 x 2 centimeters)
• Great Portability: At 0.26lb (0.12kg), this abacus is made compact and handy so you or your kids can easily take it anywhere; Comes with rounded edges so your hands won't get hurt; Also, it never runs out of power!
• Arithmetic Education Must-Have: Manipulative tools such as this abacus is an important teaching supplement for your grade-schoolers' education; It can be used in teaching number concepts in remote learning or homeschooling settings; Abacuses are also a proven useful learning device for the visually impaired

• Familiarize with Columns — Identify the 17 columns, each representing numbers 1-9, plus columns for decimals and 'money' locations. Understand how beads on rods correspond to numerical values.
• Represent Numbers — Move the beads on the rods to represent numbers. Typically, beads above the horizontal bar represent values of 5, and beads below represent values of 1.
• Perform Calculations — Use the abacus for addition (move beads right), subtraction (move beads left), multiplication (repeated addition), and division (repeated subtraction) following standard abacus techniques.

Typical situations where Yellow Mountain Imports 17-Column Soroban Abacus 26.7 cm (10.5 in) | Classic Math Tool for Mental Calculation helps — illustrative scenarios, not customer reviews.