Advanced Abacus


Book Description

This handy guide will take abacus users from beginner to master level in a very short time. Though the Japanese abacus may appear mysterious or even primitive, this intriguing tool is capable of amazing speed and accuracy. it is still widely used throughout the shop and markets of Asia and its popularity shows no sign of decline. This volume is designed for the student desiring a greater understanding of the abacus and its calculative functions. The text provides thorough explanations of the advanced operations involving negative numbers, decimals, different units of measurement, and square roots. Diagrams illustrate bead manipulation, and numerous exercises provide ample practice. Concise and easy-to-follow, this book will improve your abacus skills and help you perform calculations with greater efficiency and precision.




Japanese Abacus Use & Theory


Book Description

The Japanese Abacus & Theory book is easy to follow, and gives the reader step-by-step directions on how to use it correctly while applying it to practical use. The imperfect numerical notation and scarcity of suitable writing materials in ancient times are presumed to have given rise to need for devices of mechanical calculation. While the definite origin of the abacus is obscure, there is some reason for believing that its earliest form reckoning table covered with sand or fine dust, in which figures were drawn with a stylus, to be erased with the figure when necessary. Though the Abacus is an older tool for calculation it still is used today in Japan taking on a different name called Soroban. Though the Japanese Abacus or Soroban may appear mysterious or even primitive to those raised in the age of pocket calculators and desktop computers, this intriguing tool is capable of amazing speed and accuracy. It is still widely used throughout the shops and markets of Asia, and its popularity shows no sign of decline. Here for the first time in English is a complete explanation of how to use the abacus.




How to Use a Japanese Abacus


Book Description

This book will teach you step-by-step how to perform addition, subtraction, division, multiplication, square roots and practical examples on a Japanese abacus. Great for both children and adults. Clearly explained with text and pictures throughout every stage of your calculation.




Abacus Mind Math Instruction Book Level 1


Book Description

Abacus Mind Math Instruction Book Level 1 (for teachers and parents): Goal for Level - 1 Addition - without carryover problems Subtraction - without borrowing problems Topics covered: Basics of abacus How to do mind math How to do dictation 5 exchange concepts explained in detail with examples Skill building activities explained Instruction book includes: Examples for each concept with detailed pictures and steps by step instruction on how to calculate and what to tell your students while teaching. Theory behind the formulas explained in simple terms. Over 380 sample problems for teachers and parents to practice the concepts. These sample problems can be used to introduce your child to the concept with effortless ease. Instruction on how to effectively introduce children to mind math with ways to build the skill. Dictation - a very important aspect of abacus training is explained with useful ideas to achieve. Skill building activities are explained that help you train your child. Common mistakes made by students with ways to help them avoid making these mistakes are outlined. Corresponding practice work for children is given in the two workbooks that are sold separately under the following titles. " Abacus Mind Math Level 1 Workbook 1: Excel at Mind Math with Soroban, a Japanese Abacus Abacus Mind Math Level 1 Workbook 2: Excel at Mind Math with Soroban, a Japanese Abacus " Soroban, the Japanese abacus is a very useful visual tool that helps children 'see' numbers as beads while calculating. Soroban perfectly fits with the base 10 number system used at present and provides a systematic method (formulas) to follow while calculating both on the tool and in the mind. Mastering of this tool will enhance your child's basic math comprehension, speed and accuracy. In general, when children practice mind math, they get a very important sense of achievement that helps raise their confidence as students. You can also see an improvement in their concentration, tenacity, memory power and listening skills.




Learn to Do Math With Soroban a Japanese Abacus


Book Description

Learn how to add, subtract, multiply, divide and find square roots with this easy to use instruction guide. There are many sample problems with step-by-step instructions. The illustrations make it easy to follow along with the descriptions. Practice and perfect skills as you learn with the numerous practice problems given at the end of each chapter.




Sacred Mathematics


Book Description

Between the seventeenth and nineteenth centuries Japan was totally isolated from the West by imperial decree. During that time, a unique brand of homegrown mathematics flourished, one that was completely uninfluenced by developments in Western mathematics. People from all walks of life--samurai, farmers, and merchants--inscribed a wide variety of geometry problems on wooden tablets called sangaku and hung them in Buddhist temples and Shinto shrines throughout Japan. Sacred Mathematics is the first book published in the West to fully examine this tantalizing--and incredibly beautiful--mathematical tradition. Fukagawa Hidetoshi and Tony Rothman present for the first time in English excerpts from the travel diary of a nineteenth-century Japanese mathematician, Yamaguchi Kanzan, who journeyed on foot throughout Japan to collect temple geometry problems. The authors set this fascinating travel narrative--and almost everything else that is known about temple geometry--within the broader cultural and historical context of the period. They explain the sacred and devotional aspects of sangaku, and reveal how Japanese folk mathematicians discovered many well-known theorems independently of mathematicians in the West--and in some cases much earlier. The book is generously illustrated with photographs of the tablets and stunning artwork of the period. Then there are the geometry problems themselves, nearly two hundred of them, fully illustrated and ranging from the utterly simple to the virtually impossible. Solutions for most are provided. A unique book in every respect, Sacred Mathematics demonstrates how mathematical thinking can vary by culture yet transcend cultural and geographic boundaries.







Abacus 101: Beginner's Abacus & Mental Math: Learn the Story, Concepts & Basics of Traditional Abacus


Book Description

This is a simple guidebook for people who are interested in learning the introduction of how an Abacus works. The book includes simple explanation of the theory of abacus, how to read an abacus, and how to use an abacus to do simple calculation. The book includes a rule sheet for those who is interested in depth learning. At its simplest, abacus is a language that will translate numbers into beads. It will train your brain muscles to better focus, enhance your memory and become more observational. Learning to read numbers on an abacus really does open up a whole new world to explore.




Japan's Colonization of Korea


Book Description

From its creation in the early twentieth century, policymakers used the discourse of international law to legitimate Japan’s empire. Although the Japanese state aggrandizers’ reliance on this discourse did not create the imperial nation Japan would become, their fluent use of its terms inscribed Japan’s claims as legal practice within Japan and abroad. Focusing on Japan’s annexation of Korea in 1910, Alexis Dudden gives long-needed attention to the intellectual history of the empire and brings to light presumptions of the twentieth century’s so-called international system by describing its most powerful—and most often overlooked—member’s engagement with that system. Early chapters describe the global atmosphere that declared Japan the legal ruler of Korea and frame the significance of the discourse of early twentieth-century international law and how its terms became Japanese. Dudden then brings together these discussions in her analysis of how Meiji leaders embedded this discourse into legal precedent for Japan, particularly in its relations with Korea. Remaining chapters explore the limits of these ‘universal’ ideas and consider how the international arena measured Japan’s use of its terms. Dudden squares her examination of the legality of Japan’s imperialist designs by discussing the place of colonial policy studies in Japan at the time, demonstrating how this new discipline further created a common sense that Japan’s empire accorded to knowledgeable practice. This landmark study greatly enhances our understanding of the intellectual underpinnings of Japan’s imperial aspirations. In this carefully researched and cogently argued work, Dudden makes clear that, even before Japan annexed Korea, it had embarked on a legal and often legislating mission to make its colonization legitimate in the eyes of the world.




Japanese Numbers Game


Book Description

An almost obsessional use of numbers characterizes Japanese popular culture. A wide variety of numerical formulae and strategies provide the means for explaining events and solving problems occurring in everyday life. These include such matters as the choice of the name for a child, ranking in almost any game or sport, the diagnosis and cure of illness or the decision to accept a new job. This text provides a general study of the field of Japanese popular numeracy. It introduces the reader to a world of numbers in which fortune-telling, the abacus and games involving numbers, as well as curious numerical names (of both people and places), illustrate the importance of systems of counting, calculation and forecasting. The study explores the cultural roots of attitudes towards numbers and makes suggestions about the contemporary implications of a culture in which mechanical numeracy (and number obsession) is general but the highest levels of academic mathematics still fall short of world standards.




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