The Soroban Abacus

soroban abacusAbacus is called “soroban” in Japanese and “swanpan” or “suanpan” in China and was imported to Japan from China, via Korea about 1600. Long ago before the Abacus was introduced in Japan the word “sanban” (“san-“ and “-ban” literally mean “calculation” and “board” respectively) already existed. So a new term for Abacus, “soroban,” was created to distinguish it from “sanban.” The Chinese character for “san” can be used in different ways – “sor” or “soun” – so “soro ban” was derived from “san ban.” Surprisingly, 58 different phonetic equivalents for “soroban” have been found.

Explore the wonderful history of and fascinating information about the Japanese Abacus in the pages we’ve provided:

JAMS – The Japanese Abacus Math School…

Where your child’s success really adds up!

Stop in or call 503.419.8040 to register today or schedule you no obligation preview of our Abacus math lessons!

View Calendar


Register Now for Summer Abacus Camp!

Registration is Now Open! Register Today!! Register as a New Student  ::  Register as a Returning Student Summer Camp – 6/27-8/18 (8 weeks) Tuesday-Friday Beginner 3:30-4:30, 6-7pm Tuition: $720 Intermediate, PreAdvanced, and Advanced 4:30-6pm Tuition: $360 Homework option 4 weeks – $125 8 weeks – $250 There is no make up week, just make up as you go! Registration Deadline is 6/16 (Fri.). If you are not taking ...

Read More

From Our Parents & Students...

It was great… REALLY great! My little brother (Evan) and I worked our way through the levels, competing and demonstrating. It was so much fun to show off the skills I had learned. I truly believe that if I get anything out of Abacus, it is that I am not afraid of math. I am so excited to be back in the advanced class, and learning once again! -- Mitchell H.