Is it necessary for elementary school students to learn mental arithmetic?

I am a primary school math teacher and have taught 7 first grades. The so-called mental arithmetic is to teach children to use abacus to solve the problem of oral arithmetic, because there are many formulas in abacus, so it can help some children who can memorize and use the formulas to improve their calculation speed. However, because children who often learn mental arithmetic are young, they are all mandatory to memorize, and they will be completely forgotten after a period of time.

More importantly, the arithmetic of abacus is different from the arithmetic that elementary school students learn (which we often use). According to my experience, the number of children who are helpful for their math learning is about 5% to 10%, and most of the children are not helpful for learning mathematics, and some children who learn mental arithmetic hinder the learning of general calculations in mathematics. Therefore, it is recommended that this parent think twice before letting their children learn mental arithmetic!

Helpful. In primary school, the main content of number and algebra includes the understanding of numbers, the operation of numbers, common quantities, formulas and equations, and the exploration of laws. These contents are the foundation of the mathematical knowledge system, and also the basis for students to understand quantitative relationships, explore mathematical laws, and establish mathematical models.

The primary school mathematics curriculum standard emphasizes the creation of situations for students' learning and turns abstract problems into concrete, and in this regard, the teaching of mental arithmetic has a unique advantage, that is, with the help of the abacus, it is more intuitive and easier to understand the relationship between numbers, the meaning of numbers and their operational relationships.

The best way to count is to count while manipulating with the help of a visual diagram. The abacus mental arithmetic uses the abacus as an intuitive teaching aid, relying on the image of the abacus, the characteristics of clear gears, clear digits and easy operation, so that students can associate the digits and gears together, which is both visual and intuitive. This also lays a solid foundation for learning various common units of measurement and exploring various calculation rules in the future, and builds self-confidence for students to learn mathematics well.

In the curriculum standards, space and graphics mainly involve the shape, size, position and transformation relationship of objects, plane figures and geometry in the real world, so that students can form a certain spatial concept. Mental arithmetic uses the brain's spatial imagination and image reproduction ability to present the image of the abacus in the brain, and with the increase of digital digits, students' imagination and thinking space are constantly expanded. Children who have learned mental arithmetic have a certain foundation in spatial imagination before entering school, and their spatial imagination continues to expand after entering primary school.

Statistical probability is the study of real-life data and random phenomena in the objective world. Through the collection, collation, description and analysis of data and the portrayal of the likelihood of an event, it helps people make reasonable inferences and**. This shows that children with strong computing ability can draw more useful conclusions based on data, which is more conducive to students to make reasonable decisions and cultivate children's statistical concepts.

It can be seen that mental arithmetic plays a very important role in learning statistical probability and cultivating students' statistical concepts.

Regular kindergartens are not allowed to learn mental arithmetic. Because mathematics focuses on mathematics, concepts, logical thinking, etc., these are what are really needed to learn mathematics. Mental arithmetic is just an immediate learning shortcut, he can not play a positive role in children's mathematics, the concept of numbers, and children's logical thinking, but will lead to children will not correctly use the concept of numbers, mathematics and normal thinking to learn mathematics, and it will be very difficult for children to learn mathematics in primary school, because children will not think at all, and will only memorize by rote.

Don't give your child a misleading approach to learning at the beginning!!

If you have the opportunity to learn, it is best to learn. It's not too important if it's just for the sake of calculation. However, the main purpose of mental arithmetic is to develop children's early intellectual potential and cultivate good learning habits.

Especially in the cultivation of concentration and memory, the effect is very outstanding, which is beneficial to future primary and secondary school learning. If there is a local mental arithmetic, it is recommended that you let your child learn it!

The so-called conflict is mainly reflected in the order of calculation, primary school mathematics is mainly based on vertical calculation from low to high, and abacus mental arithmetic is mainly abacus mental arithmetic from high to low. There is no conflict, just like elementary school application problems sometimes require two ways to solve, and I have not heard of conflicts and confusion when writing pen words and writing brushes. The calculation methods in primary school include oral arithmetic, vertical calculation, simple algorithm, etc., and children who can do mental arithmetic only master one more calculation method than ordinary children, so we adults should not underestimate children's ability to distinguish.

Nowadays, some adults can't do the application problems that children do, let alone this small calculation problem.

Why are some people born with poor math, just because they don't know this calculation method, and they are convinced after reading it.

Abacus may have only three meanings for us: one. The precious traditional cultural heritage deserves our protection. It does have peculiar benefits for mental and intellectual development III. When you become proficient in it (at least mental arithmetic.

Add and subtract three or four digits), you will find that abacus can bring you happiness, just like painting, playing football and other hobbies can bring you a lot of fun!

It is very necessary. Mental arithmetic helps children improve their concentration, memory and calculation skills. These three are essential abilities to be a good learner.

And to be an outstanding learner, you must also have imagination, which can be cultivated in the process of mental arithmetic learning.

If the child has extra time to learn, this can be a good exercise for the child. But saying that children don't have extra energy, and not learning won't have any effect.

I don't think so. It varies from person to person.

Not good. The benefits outweigh the disadvantages for children to learn mental arithmetic.

Learning mental arithmetic is in line with the development of children's auditory vision and the laws of movement. Children are playful, curious, and intuitive. When learning mental arithmetic, the abacus is a concrete, intuitive and visual counting tool that is not only a teaching aid, but also a learning tool and a toy for beginner children.

When children come into contact with the abacus, the beads are counted, and the beads are moved, just like a game, which is fun and attractive, and can cultivate a strong interest in learning.

At the same time, the abacus indicator counting is simple and bright, it learns the number by beads, and the file is positioned, and the hierarchy is clear; Addition and subtraction, subtraction and addition, multiplication and division are inverse, the arithmetic algorithm is clear and clear, and it is easy for children to learn and remember. In addition, the actions of ear hearing, eye seeing, oral reading, manual and lightning-like counting and counting and mutual translation in mental arithmetic education are in line with the development and movement of children's auditory and visual vision, so they are easy to be accepted by children.

Disadvantages of mental arithmetic.

1. The unity of the algorithm and the previous stage algorithm is not high. As we all know, mental arithmetic is calculated from high to low, i.e., from left to right, while vertical calculation is from low to high, i.e., right to left. It goes without saying that there is a certain conflict between the two.

2. Children's patience problems. Learning mental arithmetic is boring, it is difficult for children to sit still, and parents need to be able to review and practice after class, otherwise the course will not be able to keep up. The close connection of the mental arithmetic course is very strong, the previous class is not mastered, the next class can not keep up with the formation, a vicious circle, 3, the formation of thinking inertia mode.

Because abacus is a quick algorithm that plans to make a disk in the brain on the basis of being proficient in abacus, and then forms a conditioned reflex and directly obtains the result of mental arithmetic, therefore, in order to learn abacus well, you must first be proficient in abacus. This will make some children who can already simply add and subtract mental arithmetic because they cannot be proficient in abacus and cannot form a bead diagram in their brains, resulting in inability to perform mental arithmetic.

I'm a high school physics teacher, so let me tell you what I think.

Quick calculation in primary school seems to be helpful to mathematics scores, and the speed has been improved, but he directly skips the middle calculation link and deduces it with some of the rules found in the results, that is to say, the learning of quick calculation does not have any knowledge in it, but only learns the laws of several settlement results. This method of learning is extremely harmful to children's thinking training and study habits.

Why do you say so much, because in junior high school, especially high school, knowledge is no longer pointed, but a system, which needs to be understood and solved step by step with systematic methods and thinking, and there is no longer a situation where it is in place in one step. This can also be a good explanation for why many children who have good grades in elementary school go to junior high school and get their grades down all of a sudden, and even can't pass the high school exam, because the mathematics knowledge of junior high school is useless The rules found are useless, he needs systematic thinking and rigorous problem-solving steps, and the children who have learned speed arithmetic in primary school Peichun do not have this kind of thinking, they are used to reaching the goal, accustomed to shortcuts, and have no interest in the process.

This is also a result of my observation of the hundreds of children I have taught, that is, those who have learned speed arithmetic, finger arithmetic, and abacus mental arithmetic in elementary school have a big obstacle in learning physics and mathematics in high school.

However, parents in elementary schools often perform a quick calculation in order to let their children perform very well in front of others, and stun those uncles and aunts.

Learning is not for showmanship, nor is it for showmanship, it is for training us to think systematically, to train our ability to understand rules and do things according to them, and even to discover rules and make rules.

Quick calculation is cool for a while, but the result is ruined life.