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Textbook "Mental Arithmetic. Part 1" + Book for the teacher
The textbook is intended for teaching mental arithmetic in educational institutions and independently at home
The first part of the book describes all the simple rules of mental arithmetic. Students will be able to solve simple examples on abacuses and mentally at a speed of 0.5 examples per second. The book is illustrated, supplemented with interesting tasks, understandable and accessible to everyone. 48 pages, paper is chalked.
A book for a teacher
Page-by-page instructions for the teacher's book, description of the method of working with an abacus, transition to mental arithmetic. The book describes all the rules (formulas) of mental arithmetic, Schulte's tables are added.