The book is divided into five items, namely basic knowledge of abacus, addition and subtraction of abacus, multiplication of abacus, division of abacus and simple mental arithmetic, and is accompanied by abacus technical grade identification standards. This book also comes with an electronic teaching reference package (including teaching guides, electronic lesson plans and answers to exercises), see the preface for details.
Reader comments
This book is very practical! For me who just gave birth to a baby, learning abacus not only helps me better manage family finances, but also exercises my brain. The content in the book is systematic and comprehensive, with abundant examples, and the writing style is concise and clear, making it very easy to understand. It also comes with an electronic teaching material package, which is really thoughtful! I think this book is worth recommending!
This book is very practical! For me who just gave birth to a baby, learning abacus not only helps me better manage family finances, but also exercises my brain. The content in the book is systematic and comprehensive, with abundant examples, and the writing style is concise and clear, making it very easy to understand. It also comes with an electronic teaching material package, which is really thoughtful! I think this book is worth recommending!