Abacus Counting Technology (1 results)

paperback. Condition: New. Paperback. Pages Number: 162 Language: O121.5. F830.4. Abacus Counting is the planning of the Ministry of Education. Vocational series of textbooks. Book set of three modules. namely. digital writing skills. and abacus skills and Counting skills; book six chapters. respectively. accounting numerals. basic knowledge of abacus. abacus addition and subtraction. the abacus multiplication. abacus division and Counting Technology . The main features of the book is concise. practical training and ap. …