From Chasing His Wife To the Top

Li Hao didn't expect someone to ask a question so soon.

Wu Lin couldn't help shaking his head when he heard the general's question about drinking horses: This question is actually very simple, but it is difficult to understand.

Why do you say that? Du Tao didn't quite understand. As a Chinese teacher, he only knew a little about these mathematical nouns.

There are too many typical models for the general drinking horse problem, and there are 16 common ones. If someone deliberately asks Li Hao down, maybe let him analyze these dozen models. Wu Lin expressed his concern.

But unexpectedly, Li Hao just smiled, and then said: Actually, the problem of the general drinking the horse is also the problem of the shortest path. Among the line segments, the vertical line segment is the shortest' and use the knowledge of axisymmetric properties and plane expansion diagrams to solve it.

In particular, it is necessary to use axisymmetric transformations and convert space problems into plane problems to solve the shortest path problem in junior high school mathematics.

Then here I will draw some common models for you. There are traps in these topics. Would you like to take notes?

When Li Hao picked up the chalk, he also looked at the male student who just asked the question.

The boy froze for a moment, then opened the notebook on the table, ready to take notes.

Li Hao drew a simple model on the blackboard behind him, then turned around and said: Let me tell you something, first of all, there are two situations in a two-point line. The first is that two points are on opposite sides of a straight line, point A, B is on both sides of the straight line n, find a point P on n, so that PA+PB is the smallest.

We have done this type of question many times. The basis is that the line segment between two points is the shortest. So which kind of model is our more difficult? That is the shortest path problem in the expanded three-dimensional graph.

Let's draw a cylinder first, where ABCD is an axial section of it, AB=8/π, BC=3, if an ant wants to crawl from point A to point C, what is the shortest distance?

As soon as this question came up, the students off the field immediately started a discussion.

Because in the cognition of junior high school students, the general drinking horse is generally a problem of plane points and lines, and rarely involves three-dimensional graphics, and it is still a cylinder.

Seeing that no one seemed to be able to give the answer, Long Jiayang immediately asked Ji Mingcheng in front of him: Mingcheng, can you figure it out?

It doesn't feel difficult, but I just can't make up my mind for a while. Ji Mingcheng frowned, scribbling and drawing on the paper.

Hearing this, Long Jiayang found it difficult for even the top students in the class to do this problem, and he immediately cheered up: Hey, even the top students can't do it. It seems that few here can do it.

He even stretched his neck, glanced at Liu Xiuyuan in the front left, and found that she hadn't written a complete answer on the draft paper, so he was even more sure that this was a difficult problem.

But only Teacher Wu Lin laughed.

What's wrong? Difficult? Du Tao asked anxiously.

Wu Lin shook his head: This kid is a genius. In fact, this question is not difficult. It's just converting the plane into a three-dimensional cylinder, which makes it difficult for many students to do it.

Seeing that no students in the audience answered, Li Hao said, Actually, to find the shortest distance for ants to crawl, we only need to unfold the side of the cylinder and get the result of 'the shortest line segment between two points'.

Expand the cylinder, connect A and C, AB=12·π·8/π=4, BC is equal to 3, AC is equal to the square of 4 plus the square of 3 under the root sign, and the final result is equal to 5.

After Li Hao finally wrote the answer on the blackboard, he looked back at the boy: I wonder if you figured out this variable question?

The boy seemed to blush, and he gave a final nod and sat down.

In this way, in the next half hour, the students in the audience asked Li Hao five or six questions one after another, and he could answer them fluently, and even reserved some time for them to explain the extended questions.

His performance completely conquered the students below.

At the age of the third year of junior high school, as long as you are capable and talented, you will be admired and respected by many people.

Crack clap clap!!

The students even spontaneously applauded Li Hao.

In fact, not only the students, but even the teachers standing behind were very surprised.

Li Hao's state and typhoon today are very much like a teacher who has been in education for many years, even more experienced than some teachers who just came to the school.

The most important thing is that the rhythm of his lectures is just right, so that Du Tao can't help feeling: This kid, after studying in the future, he is a teacher.

I guess his ambition is not to be a teacher. Teacher Wu Lin narrowed his eyes and said thoughtfully.

But at this moment, a girl stood up. Li Hao looked over and found that she was a student from Class 8 again.

She said bluntly: They were all asking questions about mathematics, physics and chemistry just now, can I ask you about liberal arts?

Li Hao smiled wryly in his heart: The head teacher of class 8 is really unwilling to give up, and his ghost lingers on.

So he said, Well

Actually, I'm just a student in the 46th grade, and I'm not strong in every subject. Otherwise, I would be the first in my grade, right?

As soon as this sentence came out, everyone agreed. After all, it is a tacit fact that boys are generally weak in liberal arts.

But, I can try my best, just ask.

Li Hao changed the subject and went straight to the fight!

The girl seemed to have been prepared for a long time. She picked up the notebook and read: Who is the emperor with the fewest concubines in the unified dynasty?

Wow~~

Many students booed when they heard this question.

Because they all know that the emperor's harem has three thousand beauties.

If you ask the emperor with the fewest concubines, they really don't know.

But the students in Class 16 gradually realized that something was wrong.

Hey, tell me, why do the students in Class 8 keep asking these weird questions?

Yeah, even the question of the emperor with the fewest concubines is being asked, how could brother Hao know!

That's right, we don't test these things in our books!

Damn it, beat them up later.

Xu Zijun was very angry. In fact, he noticed something was wrong as early as the third student in class 8 asked.

Isn't this clearly bullying his own brother?

Long Jiayang also said angrily: Brother Jun, you can teach those two men a lesson later, and I'll just come with that woman.

After hearing this, Xu Zijun turned to look at Long Jiayang.

Long Jiayang immediately changed his words: I mean, I will take the girls in our class to ask that girl for an explanation, to ask for an explanation

When Li Hao heard this question, he was amused, and then said: Actually, the answer to this question has also appeared in history books.

Oh no?

real or fake?

Bragging.

Li Hao immediately wrote the three words Zhu Youtang on the blackboard: Ming Xiaozong Zhu Youtang!

He is the only monogamous emperor in history. He has only one empress, no concubine or beauties; Ming Xiaozong and Empress Zhang get along day and night, just like ordinary people; and he is also a good emperor. Political affairs, attach importance to the judiciary, speak out, and work hard to reverse the corruption in the government!

As soon as this sentence came out, everyone was dumbfounded.

They thought, why does Li Hao even know how many wives the emperor has? !