Learn the secrets of Japanese mental arithmetic.

Become a soroban master!

The secrets of Japanese mental arithmetic were available in Poland only to a few. Our book CHANGES EVERYTHING! It is unique because it reveals the secrets of the Japanese soroban abacus and the Ishido-Shiki method.

The book The Soroban. Contexts. Theory. Practice is the only publication outside of Japan devoted to this method. It is also the only one generally available in Polish, which allows you to learn calculations on your own on the soroban. The presented method is friendly, extremely effective, available to children (from about 5 years of age) and adults.

The book is under the patronage of the  Soroban Foundation of Japna

Fogografia książki Soroban Kontksty Teoria Praktyka


Qr codes
1. Contexts
1.1. Education of tomorrow
1.2. Education and culture in Japan
1.3. The history of numbers
1.4. The history of the soroban
1.5. The method of Ishido (Ishido­-Shiki)
1.6. Soroban Foundation of Japan
1.7. Shiroi Abacus Museum
1.8. The Soroban in Poland
2. Theory
2.1. Who is the soroban for?
2.2. Difficulties related to learning the soroban
2.3. Mental arithmetic and the soroban
2.4. The role and tasks of parents in children’s learning process
2.5. Opinions about the Ishido method
2.6. Before you start learning

3. Practice
3.1. The numbers 0, 1, 2, 3, 4
3.2.  The numbers 5, 6, 7, 8, 9
3.3.  Addition with the value-5 bead
3.4.  Subtraction using the value-5 bead
3.5. The numbers 10, 11,… , 20, …
3.6.  Operations with the number 9
3.7.  Operations with the number 8
3.8.  Operations with the number 7
3.9.  Operations with the number 6
3.10.  Operations within the number of 50
3.11.  Operations with numbers over 50
3.12.  Operations with numbers over  100
3.13.  Multiplication by single-digit numbers
3.14.  Multiplication by two-digit numbers
3.15.  Division by single-digit numbers
3.16.  Exam proof sheets
3.17. Answer key

Who is the book for?

For You
I am a parent, I want to teach a child
For You
For You
My child is learning soroban, I want to support them
For You
For You
I am a teacher, I want to teach children
For You
For You
I know the soroban, I want to improve my technique
For You

Review excerpts

‘In the introduction to their monograph, the authors refer to the well-known educational report from the last century, edited by Jacques Delors, “Edukacja. There is a hidden treasure in it.” They very aptly note that the soroban is just such an educational treasure. This beautiful and valuable reflection is the leitmotif of the monograph. The authors managed to discover – at least for the Polish reader – one of the educational treasures. Certainly, it became possible only thanks to the true passion of both Authors, and passion is the most important and necessary quality in the teaching profession. We know that a good teacher teaches by contagious passion, according to the aphorism from almost 2000 years ago by one of the greatest writers of ancient Greece, a historian, a philosopher-moralist – Plutarch of Chaeronea: “the mind is not a vessel to be filled, but a fire that must be kindled.” It seems that both authors accomplished this task not only in the form of their monograph, in which they encourage the reader to use the soroban and give them a taste for this thematic area, but also fulfill it in their daily didactic work.’

dr hab. Eng. Janusz Morbitzer, prof. call AWSB
Department of Pedagogy
AWSB in Dąbrowa Górnicza

‘The book was written in correct language, very clear and precise. It is good that the reviewed publication on soroban is published in Poland. It will certainly turn out to be very useful, showing the theoretical and practical aspects of working with the soroban – the Japanese abacus.
This book is intended for current and future soroban students.
I congratulate the authors on their courage to be the precursors of the Ishido method in Poland. After all, it is their pioneering publication that future potential researchers of the phenomenon and methods of working with the Japanese abacus will refer to.
I rate the reviewed publication very highly. I hope that its impact will be so significant that work with soroban will find its application in educational practice in Polish schools, especially in mathematical education.

Soroban book. Contexts. Theory. I recommend the practice for use during school and extracurricular educational activities.’

Dr. Tomasz Szwed
Institute for Educational Studies
PWSZ in Racibórz

‘Traditional school teaching of arithmetic is by nature a rather monotonous activity and generally does not arouse much enthusiasm among students. Proposed in the book Soroban. Contexts. Theory. Practice the way of writing numbers and operations on numbers is something new and changes thinking about arithmetic. It stimulates functional thinking about numbers in a very effective and clear way. Indicates a new entrance into the World of Numbers. The book is written in such simple and encouraging language that it should be in the hands of every math teacher in school and in every school library and reading room. It helps to understand that numbers are not just written on grid paper.’

prof. dr hab. Waclaw Zawadowski
mathematics teacher

Opinie czytelników

Soroban Using the Ishido method from K.Sieńkowski and A.Wołkiewicz, I recommend... In search of ways to visualize mathematics, I combine all my passions: training of cognitive functions in the order of elementary mathematics. Attention, Perception, Visualization, Movement Planning, Memory and Thinking. In the only right model Master - Apprentice. Other - Business Models of Mental Arithmetic based on predatory franchises and building the illusion of quickly mastering incredible skills are unacceptable to me.
Agnieszka Olszewska, Żary
I recommend the book. Written in an accessible way, even for a layman. I was even more captivated by the approach of Mr. Karol. He is truly passionate about what he does, what's more, he offers his help if needed. I wish there were more such professionals! Thank you very much and I recommend it to everyone!
Aneta Mrowiec, Zabrze 2022
WOW, I didn't expect so much knowledge.
Finally, a reliable source of information about abacus. Everywhere you hear only about the advantages, and no one talks about the hardships of science. Everything is here! I recommend!
Piotr, Kraków 2022
Książka stanowi pionierskie na rynku polskim kompendium wiedzy o liczydle japońskim. Uczy nie tylko posługiwania się nim. Przedstawia korzyści płynące z nauki oraz organizację i sieć szkół sorobanu.
Wojciech Gęszczak, Warszawa 2022
Doktorant Uniwersytetu Warszawskiego
I know soroban, I've been counting since 2013. Despite this, in the book I found new, easy-to-understand counting techniques. Valuable tips are for everyone who would like to start their adventure with soroban. I highly recommend it to everyone, regardless of age and education.
Jolanta Kamińska, Siedlce 2022
The book is published very carefully. It has a hard cover and a nice bead bookmark 🙂 It contains a lot of photos and drawings, as well as QR codes with links, leading to interesting places related to the soroban. FULL REVIEW
Buba z Bajdocji
Beautifully published, in a hard cover, and the bookmark is a ribbon finished with a sorban bead. The position is quite extensive, because it has 240 pages that should be read carefully. You need to go back to some parts of the book many times to consolidate and remember the information. This is an amazing position... FULL REVIEW
Kinga matelska-Graf

About the Authors

Karol Sieńkowski – member of the Soroban Foundation of Japan, certified trainer of the Ishido-Shiki method and examiner of the Soroban Foundation of Japan, founder of the Soroban Academy in Poland, member of the Association of Mathematics Teachers, teacher of natural subjects, precursor of the Ishido-Shiki method in Poland, author of books popularizing mathematics and soroban.

In the book The Soroban. Contexts. Theory. Practice is responsible for content directly related to the soroban. It introduces its history, pedagogical aspects, methodological issues and presents instruction on calculations on the Japanese abacus.


Zdjęcie Albert W

Albert Wołkiewicz – doctor of theological sciences in the field of catechetics, lecturer in didactics and catechetics (WSD of the Salesian Society in Krakow, WSD of the Bernardine Fathers in Kalwaria Zebrzydowska) and pedagogy (MWSE in Tarnów), expert in teacher promotion, researcher of educational media and scientific communication .

In the book The Soroban. Contexts. Theory. Practice  raises the subject of tomorrow’s education and looks for a place for the soroban in it, introduces the reader to the invention of the “number” and discusses the structure of the modern education system in Japan.

Ciasteczka są super, byle nie w nadmiarze. Wykorzystujemy tylko te, których potrzebujemy by strona w pełni działała. Dowiedz się więcej z naszej polityki prywatności.