Not long ago, I read an article. A parent who is a math teacher in Silicon Valley told me what she was most afraid of when she was a child:

Let's count papers with one mouth, 60 questions, and see who can count quickly. The student who has finished the calculation should raise his hand, and he will be praised by the teacher.

Then the parent said in the article quite helplessly: "Mathematics is not about changing tires. Why do you have to do it so quickly?"

Seeing this, the teaching assistant couldn't help laughing, because this scene is really his wife's picture. I believe many parents have experienced this kind of "math contest" and are deeply touched.

This pursuit of computing speed, we not only personally experienced, but also often see this kind of propaganda:

Even the age of learning quick calculation has dropped from 7.8 to 4.5. Last time, the teaching assistant saw a father share a story about how to teach his children to learn fast arithmetic to become "Niu Wa": 1 year-old began to grind his ears with a formula table, and he recognized numbers while talking. At the age of 3, he began to add and subtract within 100. ...

Stimulated by one Niu Wa story after another, we can always see a group of parents constantly asking: Teacher, is this really effective? My child has no foundation at all, can it be done? God, my child is almost 4 years old and can't do anything! I also want to learn!

You can feel your parents' madness and eagerness through the screen.

Although the teaching assistants are suspicious of these stories that will be added or subtracted within 100 at the age of 3, more and more this phenomenon still makes the teaching assistants often feel that it is really not easy to have a baby now!

Quick calculation, is it necessary to learn?

In fact, in this respect, teaching assistants can give some advice to parents, that is: before learning fast calculation, first find out what the purpose of learning fast calculation is!

If your purpose is to take part in a quick calculation/oral calculation/mental calculation competition, or just to give your child a calculation test, you can give due consideration to further improving the speed after the child has mastered the calculation foundation;

But if the purpose of learning speed calculation is to let children learn calculation well and lay a good foundation for calculation, then you don't have to learn speed calculation!

Why do you say that?

Because in fact, quick calculation is not "difficult to learn".

The pursuit of computing speed, as long as you are exposed to many types of questions, know how to classify and use established methods, you can quickly find the answer.

However, many quick calculation learning actually skips the intermediate calculation link and is derived from some laws found in the calculation results, that is to say, there is no knowledge and universal method in quick calculation learning, only a few conclusions summarized from the calculation results!

In the short term, learning fast calculation will improve children's calculation speed and have a direct impact on children's performance, especially in primary school;

But in the long run, this learning mode will affect children's thinking habits, let children rely on this shortcut and solidify their thinking.

This is why many children look at mathematics in primary school and solve problems quickly in all aspects, but junior high school and high school come down at once.

Because from junior high school, children's knowledge of learning mathematics is no longer a point, but a comprehensive and systematic subject knowledge, which requires systematic methods and logical thinking to understand, think and solve problems step by step, and there is no overnight situation.

If children rely too much on quick calculation, develop the habit of reaching their goals directly, and have no interest in the thinking process, then backwardness is inevitable.

Basic skills are not solid? Learning is not recommended!

So, as a distraction skill in primary school, can't you really learn it?

Not exactly.

Quick calculation is actually very suitable for those children who have mastered the calculation principle and have a solid foundation.

For these children, quick calculation is only a means to further improve on the basis of understanding knowledge

For those children whose basic skills are not solid, it is not recommended to learn quick calculation directly.

On the one hand, it increases their burden, on the other hand, it interrupts their accumulation of basic knowledge, which has no long-term benefit to children's mathematics foundation.

Cubic bear always says, "study, study, and practice later"!

And "quick calculation" is actually a means of doing problems quickly. Must be based on the knowledge has been mastered, children can understand the principle behind the knowledge, and then carry out quick calculation training.

Here, the teaching assistant should also emphasize that children in the enlightenment sometimes calculate slowly and do problems slowly, which is not necessarily a sign of poor math ability, but that children are still thinking.

Many parents want their children to do problems faster and master knowledge faster. As soon as they stopped to think, they began to worry. The blind pursuit of computing speed actually omits the process of exploration and completely deprives children of the steps of natural development. This is a very serious matter.

Careful consideration is more worthy of our encouragement and affirmation than giving an answer quickly. As long as children are willing to think and try, even if they do it slowly, it will not hinder the development of children's mathematical ability.

Lay a good foundation and do the problem faster.

Many parents have a misunderstanding about doing problems.

Think that laying a good foundation = learning slowly, thinking seriously when doing problems = doing problems slowly.

But in fact, for many children with solid foundation and open mind, there is no need to practice the speed of doing the questions deliberately. The questions are still easy to do, one at a time!

In fact, there are not many skills to learn calculation. The educational concept of the post-cube Xiong Meng's computing class is also a solid foundation to teach children to achieve mastery.

Fast calculation belongs to this method. After the foundation is solid, just add a little more.

For children in the enlightenment period, it is still necessary to carry out computational enlightenment first, lay a good foundation, and gradually cultivate children's computing ability ~

Course of Monte Carlo calculation for cubic bearings

[Suitable age]: children aged 3-6 years or with weak computing foundation.

Five units, from concrete to abstract, step by step.

From the origin of the number to the addition and subtraction within 20, it is interlocking.