When I went home and put away my clothes and followed Han Qian to school, it was just in time for the first class in the afternoon to start.

In the afternoon, the first and second periods were math classes, the third period was physical education classes, and in the following self-study time, Wang Yufei was going to another building to participate in Han Wenle's Olympiad math training class.

Naturally, there is no pressure on the course schedule.

After all, mathematics is his strong point, so he naturally doesn't have to listen to lectures when he is in class, and Wang Yufei puts all his energy on the books that he has not finished reading.

English books were put aside for the time being, because Wang Yufei found that this kind of subject, which only requires rote memorization, more listening and more repetitive memory, is actually not much of a challenge for him.

All he's lacking now is vocabulary and listening practice. The former is not a problem for him, as for the latter...... Aunt Han is an English teacher in high school, and there must be no shortage of various textbooks at home, let alone various audio materials.

What interests Wang Yufei more is physics, chemistry and biology.

Especially in physics, when everything that is common in life is given theorems in academic language, Wang Yufei only feels full of beauty. It's even more interesting than math.

When he saw all kinds of circuit knowledge, Wang Yufei found that he had mastered another ability, and when he looked at all the electrical appliances in the classroom again, he seemed to be able to directly construct various three-dimensional circuit diagrams of the entire school in his brain.

Of course, it's not just a flat or three-dimensional figure, but also a dense variety of data.

The high-voltage wires enter the transformer to about 220V and then enter the power distribution room, and are transported to each classroom in each building through various specifications of wires......

It's hard to imagine, just looking at the most basic circuit content, how can the brain associate so many things, and even rise, and even when the entire three-dimensional diagram appears in front of his eyes, Wang Yufei himself feels surprised.

It wasn't until his foot was kicked hard that Wang Yufei withdrew from this mysterious feeling.

It is natural that Guo Xiaoyi can kick Wang Yufei in class.

When Wang Yufei woke up, he saw Guo Xiaoyi standing up, looking at the blackboard intently.

Well, this is being called to answer the question.

Wang Yufei raised his head and looked at the podium, where the young math teacher was looking at Guo Xiaoyi with a gloomy face, and a simple calculation problem was written at the bottom of the blackboard.

"Given that 1/a+1/b=9/2(a+b), then a/b+b/a=?"

Wang Yufei sighed in his heart, it seems that he had just explained the similar question to Guo Xiaoyi last night, but obviously his sister did not understand what he said yesterday.

But in this case, what can he do? He can only quickly write the answer on the manuscript paper on the table: "5/2"

The answer is two out of five. ”

The next moment, Guo Xiaoyi replied loudly.

It's a pity that standing on the podium, the math teacher has already seen the small movements between the two clearly.

"The male classmate next to Guo Xiaoyi, what's your name?" asked Li Ke unceremoniously.

Wang Yufei's heart tightened, and he quickly stood up: "Teacher, my name is Wang Yufei, and I am a freshman who just transferred today. ”

"Wang Yufei, do you think you're very powerful?" Li Ke asked.

As a math teacher with only two years of experience, Li Ke can't rub sand in his eyes.

Wang Yufei glanced sideways at Guo Xiaoyi, the girl pursed her lips, and her eyes seemed to be a little red.

If it was changed in the morning, Wang Yufei would definitely admit his mistake directly after being exposed, or remain silent. But today, Guo Xiaoyi's words with Han Qian seemed to open a window for him, making his thoughts start to become a little different.

So he naturally stated a fact: "Yes, teacher, I think I am indeed very good. ”

There is no pride at all, and even the tone is very sincere.

Or maybe it's because the tone is too plain and sincere, it seems to have inadvertently poked the laughter of many students, and a burst of joyful laughter suddenly burst out in the classroom.

"Quiet!Who's making trouble during class time?" Li Ke was a little angry, and glanced at the class angrily.

The class fell silent, and Li Ke's gaze at Wang Yufei became even more gloomy.

"How good do you think you are at math? or you'll be the one to teach today's lesson?" asked Li Ke directly.

"If the teacher needs it, I should be able to. Wang Yufei replied calmly.

It's not difficult at all.

The content that needs to be explained in the whole book Wang Yufei has gone through it completely last night, and he really doesn't think it is difficult to teach people, it is nothing more than disassembling and crumpling what he understands and instilling it.

In fact, just now, when he found out that Guo Xiaoyi still didn't quite understand what he talked about yesterday, he had already thought of many ideas to break down these mathematical knowledge points into simpler ones.

"I'm ......" Li Ke was a little speechless, he really didn't expect this student to suddenly appear in the class to be so iron-headed.

"Okay, then you come up, the rest of today's content will be up to you!" Li Ke threw the chalk in his hand directly on the lectern, and then walked directly off the podium and stood next to the window in front of the first row of classrooms.

Wang Yufei silently walked up to the podium, then looked down at the lesson plan that Li Ke placed on the podium, then raised his head and looked at Guo Xiaoyi calmly, and said, "Guo Xiaoyi, you can sit down." ”

"Poof......" There was almost another burst of laughter in the classroom, but after Li Ke walked around the classroom with cold eyes, the laughter quickly disappeared.

After all, the No. 1 Middle School in the provincial capital is a key middle school, and the junior high school class is a key class, so the teacher's prestige is naturally very high.

However, Wang Yufei on the podium ignored this, he watched Guo Xiaoyi sit down, and then looked at himself hopefully, and suddenly felt inexplicably in a good mood.

"What we're going to get to grips with today is a quadratic equation. In fact, most of the theoretical things, Mr. Li has already explained very thoroughly, and now what everyone lacks is not the understanding of basic concepts, but how to clarify the idea of solving problems. ”

"In fact, there is only one idea of solving problems in mathematics in the general direction, that is, simplifying, deducing the unknown from the known, and then getting the answer, and there is a line between the conditions of each problem and the answer, this line may be a formula, a theorem, or a lot of formulas and theorems, but everything we have to do is to be very skilled in finding this line. ”

"First of all, let's explain it in the form of example questions, and first I'll give you a question. ”

After speaking, Wang Yufei picked up the chalk and turned to face the blackboard, and casually ordered an example question.

Let's not mention the example questions, this chalk hand is still quite powerful, plus the words just now, Li Ke was stunned.