Mr. Li saw that it had aroused everyone's interest 100%, so he stopped playing tricks and began the formal teaching, he said: "Everyone knows that basketball is a sport about running and jumping, so I want to ask you, in the process of jumping, is the first half of his ascent the same time and the second half of the time?" ”

A "sleeping bird" who often sleeps in class muttered with some confusion at this time: "It should be the same, but from the teacher's way of asking questions, I sniffed out a trace of abnormality, is it different?" ”

The "Xueba Bird" next to him turned white with disgust, stroked his glasses, pointed at him with a posture where there was only one truth, and said, "Stupid, of course it's different." Pen ~ Fun ~ Pavilion www.biquge.info This is a basic law of physics: the time it takes for an object to fall from a static object depends on the square root of the distance above the ground. The process of a basketball player taking off and jumping is a uniform acceleration process, the acceleration is negative, and its velocity is zero at the highest point, so it can be seen as a problem of a static object falling. Then we can solve and get: the second half of the athlete's ascent time accounts for about 71% of the entire ascent time, so the first half of the athlete's ascent time and the second half of the ascent time are not the same. ”

After finishing speaking, he breathed a long sigh of relief, enjoying the adoring gaze from the "sleeping bird" and the "loving bird", and the lonely appearance of a master.

Mr. Li applauded and continued, "It seems that there are still students in our class who love learning. ”

After "Xueba Bird" was "officially" recognized, he couldn't help but be even more arrogant.

Mr. Li continued: "Then since you have such a good grasp of the theory, please tell me that the offensive basketball player should choose to do moves in the rising stage to improve the success rate of the offense, and at which stage should the defending player intervene to improve the success rate of the defense?" ”

Fine beads of sweat began to appear on the forehead of "Xueba Bird", and he was a little hesitant: "That's the first half?" No, no, no, the second half? That's not right. ”

The "sleeping bird" next to him immediately stood up: "I know, I know!" Although I don't know any laws of physics, I know that when attacking, you have to do a feint from the beginning, but you must be steady at the end; When defending, always be vigilant, don't think about making moves when you take off, judge the trajectory of the ball, and intercept on the trajectory. ”

"Well, yes, this classmate is right. Although he does not have a solid foundation in physics, he has a wealth of practical experience and can think outside the limits of the problem to solve the problem. Yes, I deliberately set a small trap in the question, implying that you only have two answers, the first half or the second half. But the real answer is not in the two. ”

Mr. Li stroked his glasses and said: "The purpose of my question is to tell you that everyone has something worth learning from us, and it is not that you are invincible in the world if you study theory well, but you still have to learn practical experience from your classmates in order to better solve practical problems." This is just a small example, in the future you will encounter more complex problems, they will definitely exceed your cognition, absolutely beyond the theory in the books, you can only face it, challenge it, overcome it if you learn from each other and help each other. ”

The whole class fell into deep thought, Zhang Fan let go of the Buddha and re-acquainted himself with the old man with rosacea in front of him, it turned out that he still had some real materials, and he was entertaining, and the education method was very novel. Perhaps, he can really bring out a large number of unruly students as a teacher.

Mr. Li clapped his hands, woke up the pensive students, and continued: "Since you have joined forces to overcome the first principle of basketball, the principle of bounce, that is, the application of the phenomenon of uniform acceleration in physics in basketball. Let's take a look at the second principle, the layup principle. ”

"What is the principle of layup? So let's talk about it......"

Looking at Mr. Li who was talking eloquently above, Zhang Fan was not in a daze for the first time in class, he had a strong interest in physics for the first time, and for the first time, he felt that the laws of physics that were once boring and difficult to understand were so simple and easy.

He really didn't expect that the time for class could pass so quickly, and in the blink of an eye, the bell rang after class. Mr. Li stopped talking, listened carefully to the once familiar ringtone, silently reminisced, and then said: "This ringtone reminds me of when I went to school, what I look forward to the most is this sound, and what I hate the most is that the teacher will drag the class after hearing it." So, I secretly made up my mind not to procrastinate, why, because I'm lazy, haha! ”

Everyone was immersed in the ocean of physics and still had some unfinished feelings, and when they heard this bell, they came back to their senses, and they actually had a feeling of reluctance to leave class.

They looked at each other, and they didn't know who led the way, and at first they shouted quietly, which later resonated, and then formed a sound wave, and they waved their arms and shouted: "Drag the hall!" Extra lessons! Drag the hall! Extra lessons! ”

After listening to this, Mr. Li smiled: "I have only heard of the concert and asked to return, and I have not heard of students taking the initiative to ask for extra classes, it is really a long time to see." ”

Then she unscrewed the water bottle in her hand, took a sip of the wine inside, and then said, "But do you think this will change my determination, you really underestimate me." ”

After speaking, he ignored the enthusiastic classmates and neat shouts, turned around and left.

The students looked at each other, and they were stunned by each other, but more of them were disappointed, and this disappointment also contained a faint self-blame, they thought that it was because they were not good enough that Mr. Li did not want to take extra classes.

They stared at Mr. Li's back, their eyes full of longing. If there is a temperature in the eyes at this time, then it can definitely melt the iceberg. But Mr. Li is definitely colder than an iceberg, more ruthless than a cold wind.

They also watched Mr. Li leave without looking back, and had already reached the exit of the playground. Many people retracted their gaze and sat on the ground helplessly, it was the first time they were so interested in physics class, and the first time they felt that learning could be so interesting.

But this interesting experience was too short, and they still had to go back to the classroom that they now find extremely boring to repeat the boring revision, which made them feel even more lost. Sometimes people are like that, when he gets used to the boredom, a little change can make him happy, but it will be extremely painful for him to return to that boredom.

"I won't be able to do extra classes, but who wants to play basketball with me?"

There was a drunken voice in the wind, but it blew away the gloom in my heart like a warm wind.

The students were stunned for a moment, and then burst into a burst of cheers. Their mood is like a roller coaster, from the bottom to the top in an instant, and the passion is ignited again in an instant.

They rushed to Mr. Li's side, surrounded him, and scrambled to say, "I do!" "Let me come!" ”

The exit of the playground was instantly blocked by the surrounding water. The strong female classmate couldn't bear the noise and crowding of the scene, and roared angrily: "Let me come!" ”

As he spoke, he took Mr. Li on his shoulders and walked towards the basketball court. The crowd followed her and rushed to the basketball court. The scene was very lively, and from a distance, it seemed like the king of the mountain robbing his relatives.

This lively and unusual movement naturally aroused the curiosity of some junior students, who unconsciously gathered with the team and secretly asked curiously, "What are you doing?" ”

The students in the third class of high school looked at him disdainfully and said, "I don't even see this, we are in physics class!" ”

"Physics class?" The younger students are even more curious, they have never seen this kind of physics class.

So the crowd gathered more and more.

Zhang Fan was naturally squeezed behind, he looked at the mighty crowd, and couldn't help but shake his head, Mr. Li's charm is really great.

Although he didn't like the crowding, he followed along, as he found that he also enjoyed the form of physics class.

Seeing Long San who was moving slowly halfway, Zhang Fan greeted him with a smile and said, "Mr. Li really impressed me." ”

Long San smiled: "Of course Mr. Li is not a simple person, and Your Excellency is probably not simple. ”