Read the book: «Mental arithmetic. Methodological guide for teachers and parents»

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ISBN 978-5-4498-3488-1

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From the author

The manual is written by a teacher of mental arithmetic, chief methodologist, Director of education at the center for mental arithmetic. The author participated in the development of the method of mental arithmetic when it first appeared in the CIS countries. After analyzing the market, I noticed that former colleagues who also became professionals in this field began to open companies, centers, associations that issue certificates in mental arithmetic online training for teachers in mental arithmetic. They realized that the franchise is expensive, and it became cheaper to teach this course themselves.

This book covers most aspects of teaching mental arithmetic so that teachers can teach and develop students using mental arithmetic without going through expensive training, online courses, and even more so without franchises.

Introduction

This manual is designed to train teachers in mental arithmetic, for managers of children’s centers and other professions related to the training of mental arithmetic. With this book, you can learn all the formulas of addition and subtraction, multiplication and division, learn the method of explaining this course to students, the organization of the teacher’s work (lesson plan, working with parents, exams, Olympiads, standards, reports of the teacher, etc.).

After carefully studying the material, the teacher will be able to achieve excellent results for students, that is, to study the course of mental arithmetic, the teacher will not need to take expensive online or offline courses, buy a franchise.

Also in the introduction, I want to specify the basic concepts.

Mental arithmetic is a method of rapid verbal counting (faster than a calculator counts), based on calculation on special accounts – soroban. Learning to count on the soroban, students will begin a mental count.

Mental score. Students present a soroban in front of them and quickly count on imaginary accounts. It is the mental account that develops both hemispheres of the brain: representing soroban works the right hemisphere, translating the image into numbers works the left hemisphere. In other words, logic, creative and analytical thinking, photographic memory, speed of reaction, and self-confidence increase. The lessons of mental arithmetic use flash cards that develop tasks, dictation by ear, mental dictation, relay races, which also develop fine motor skills of the hands, both hemispheres of the brain, auditory and visual memory, and as a result, improve grades in all subjects.

1. Methods of teaching students

1.1 Fundamental exercises (FE)

Fundamental exerises – examples that you need to perform every day to develop your fingers, to increase the speed of solving examples, in the future, they will also help in the transition to a mental account. They change depending on the topic, the formula passed in the lesson. Fundamental exercises must be performed quickly, following the finger technique. Three fingers of the left hand hold the soroban (little finger, ring finger, thumb). With your thumb, lift the bones (fold them), and with your index finger, lower them (take them away). The upper bone, i.e. 5, is raised and lowered with the index finger. On soroban, we count the fingers of the right hand (both left-handed and right-handed).

According to the Japanese method on soroban you need to think like this:

– the thumb and forefinger of the right hand

– middle and index fingers of the left hand.

The other fingers of the left hand hold the soroban. It is convenient when students solve examples on 3—4 digit numbers for speed. When we decide on 3—4 digits, then in the middle we use the hands that are convenient for students. The finger technique should be followed from the first lessons.

Fundamental exercises should be performed after a new topic, before the final dictation, and before each homework assignment.

FE is needed for fixing formulas and increasing the speed of solving examples. Develops fine motor skills of the hands, which also affects intelligence and speech.

The teacher can create their own games / relays of FE THAT will arouse the interest of students, parents and competitors.

The teacher is recommended to know examples for FE by heart or have them with him in the classroom.

For example, FE to the formula +4 junior fellows.

1+4

2+4

3+4

4+4

FE to the formula +9 senior fellows
1+9
2+9
3+9
4+9
6+9
7+9
8+9
9+9

FE to work out all the formulas
6+6+6+…=60
7+7+7+…=70
8+8+8+…=80
9+9+9+…=90

60-6-6…=0
70-7-7….=0
80-8-8-…=0
90-9-9…=0

1.2 Flash cards

Flash cards – this is a card with the image of soroban’s spokes with numbers typed on them. With these flash cards, many games are played, they are shown to children, with maximum speed, and children should have time to understand what number they saw. The teacher very quickly alternates flash cards in front of the students. Students, without lowering their heads, write down numbers from flash cards. Even if the records are sloppy-the main thing is to have time (and fun). This exercise trains mindfulness, visual memory, and speed. Students also learn the image of the number on the abacus faster. Then the exchange of notebooks and mutual verification.

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