The sooner you learn, the better.

You can improve your arithmetic ability!

The inspection time is short,

Let's first understand the learning process of children's abacus mental arithmetic:

( 1)

1. Know the abacus, know the names of each part, learn the posture of the abacus and the correct method of holding the pen.

2.0~ 10 understanding, disk diagram, pearl image diagram, fingering learning, pearl thinking, composition decomposition.

3. Direct addition and direct reduction:

Practice on the abacus first, add and subtract 3~6 strokes of a number.

One-digit analog mental arithmetic

Two-digit analog mental arithmetic

Three-digit 2~3 different numbers are not added or subtracted.

(2)

1. If it is full, add five, and if it is broken, subtract five (the next five is rounded off, and the last five is rounded off), master the concept of making up the number (two numbers add up to five, which is called making up the number), and practice mental arithmetic on the abacus.

2. Add and subtract to give way and master the concept of complement (two numbers add up to 10 is complementary,) abacus mental arithmetic.

(3)

1. If you break the 5-digit addition, you will lose 5 when you abdicate.

2. Break the five-digit addition, abdicate more than five, and subtract the mental arithmetic.

3.3~5 mental arithmetic of adding and subtracting two digits

Let's talk about the advantages and disadvantages of learning abacus mental arithmetic:

Excellent: 1. It is beneficial to improve memory ability and cultivate attention. The speed and accuracy of abacus mental arithmetic depend on the length of time and the depth of traces in the brain. 2. It is beneficial to improve computing skills.

Disadvantages: 1 The classroom atmosphere is rather dull, it is difficult for children to calm down and there are few teaching AIDS. 2. Children do not have a good grasp of the concept of quantity and the combination of quantity and number. 3. Because abacus mental arithmetic is based on skilled abacus mental arithmetic, and then a quick algorithm of conditioned reflex is formed, and the result is obtained directly through mental arithmetic, so to learn abacus mental arithmetic well, we must first master abacus mental arithmetic skillfully. This will make some children who can simply add and subtract mental arithmetic, because they can't do mental arithmetic skillfully and can't form mental arithmetic pictures in their minds, so they can't do mental arithmetic.

My suggestion is:

1. Mental arithmetic is boring to learn, and it is difficult for children to sit still. Parents need to review exercises after class, otherwise the course can't keep up. The course of abacus mental arithmetic is closely related. If you don't master the last class, you won't be able to keep up with the next class, resulting in a vicious circle.

2. It is difficult for children who have learned addition and subtraction to get rid of the original mathematical concepts and imagine the abacus of abacus calculation. This will bring great disadvantage to learning abacus mental arithmetic, and parents will not understand whether he has an abacus in his mind when doing simple arithmetic. When it comes to increase or decrease, it's too late to know that he doesn't have an abacus in his heart, or to use past experience to calculate.

3. The difference between mathematics and abacus mental arithmetic: It is more interesting to learn mathematics, but the practice between classes is not particularly important. Its teaching system is helpful for children to establish abstract logical thinking ability, give them some preliminary mathematical knowledge and skills, and develop their intelligence. Various teaching methods can be used to cultivate children's interest in mathematics, but these may not be obvious to parents at this stage, unlike children who can quickly calculate and add and subtract multiple strokes after mental arithmetic is completed. Both of them have different teaching objectives and effects.