Mr. Bao and his son: Only use Stankang for hair oil

Chapter 46 Awkward pretense

Teacher Song patted the table again, and the students immediately fell silent.

His arms exposed outside his sleeves were a little dark, probably from the sun. They looked like they had done farm work, and their arms were very strong. The table made a loud noise when he slapped the table, but he happened to be a teacher, or a teacher of objects. .

Glancing around the classroom again, he spoke:

"Let me introduce myself first. I am Song Zhongzhi. As you all know, I am your Mr. Gewu. My purpose of teaching in the school is to cultivate talents for the country."

"Although I am not your chief teacher, I still have to say what I need to say. I advise you to study hard in the future and become a useful person to the country.

"Just like the motto of Whampoa Military Academy, if you want to get promoted and make a fortune, please go elsewhere. If you are greedy for life and afraid of death, you may enter this school by mistake. If you come to the new school just to gild your academic qualifications, then you should be ashamed, because you are in vain It’s a waste of a place in a new school.”

After hearing this, Bao Guowei discovered that this teacher was still very patriotic.

"Today can be said to be the first day of school for everyone."

"First of all, please remember that in all my courses, there is no need to stand up and say hello in the future. It has no meaning except a waste of time."

"Second, before class every day, I hope that when I enter the classroom, I can see everyone sitting quietly reading in their seats, instead of being noisy like today."

"Third, if you don't understand anything in class, you can raise your hand and ask without any psychological burden. I am very happy to answer your questions. The only thing you have to remember is not to interrupt casually during my lecture."

Teacher Song seemed to be a real person who did practical things and didn't like to fiddle with nonsense. Bao Guowei secretly took note of his personality traits.

After saying these words, Teacher Song picked up the book and walked under the podium. It seemed that he was about to start teaching.

“The essence of Western physics begins with the combination of Newton’s three laws and arithmetic.”

"What are Newton's three laws...turn to the first page of your Gewu book."

As soon as the teacher finished speaking, the classroom was filled with the sound of turning books.

"Newton's first law: Any object - at least at this stage you can think of it as an object, and it will be called a particle in the future, must maintain uniform linear motion or rest until an external force forces it to change its state of motion."

People's thinking in this era is somewhat conservative. When the students looked at this sentence, most of them found it a bit difficult to understand. Teacher Song also gave everyone time to think about this sentence.

A male classmate sitting in the southeast corner raised his hand, apparently wanting to ask a question. This man was Bao Guowei. He had already seen the teacher's nature, and he was willing to ask questions, which would probably win his favor.

"Bao Guowei, what are you going to do!"

Guo Chun had suffered from sleep disorder for a long time. As soon as he heard something about Newton's laws, he immediately fell asleep. He was covering his forehead with his hands to cover his eyes and was about to take a nap. From the corner of his eye, he suddenly saw Bao Guowei's handle. He raised his hand and was shocked. Why did the good-looking Bao Guowei raise his hand?
"I want to show off!"

Bao Guowei replied softly. Guo Chun didn't understand what pretending was, but he probably understood what he meant.

Teacher Song saw Bao Guowei at a glance, raised his hand towards him, and motioned for him to stand up.

Bao Guowei stood up, and his chair made a sharp sound when it rubbed against the ground. The classmates who were reading the book of objects all noticed him.

"Sir, I just imagined that there seems to be no object in the world that does not experience force, right?"

Teacher Song was about to talk about this point. It was convenient for him to hear that students could ask this question. He felt a little happy. He nodded and did not answer immediately. Instead, he continued to give other students time to think about the first question. .

After a long time, he spoke:
"The question raised by this classmate is very good. Students should have noticed that there is indeed no such object in nature. At present, force-free objects only exist in human imagination."

Bao Guowei once again raised a question:
"I heard that studying objects is a subject based on experiments. Since there is no such object, it is naturally impossible to conduct experiments. Since it is impossible to conduct experiments, how did this theorem come to be?"

"This is a very good question! Newton's first law is not simply derived from experiments, but is derived through scientific reasoning based on experiments. It cannot be directly verified by experiments, but it has withstood the test of practice. , is one of the universally recognized basic laws of mechanics."

"Therefore, the science of physical studies has another name, called physics."

The teacher picked up the chalk and wanted to write the word "physics" in big letters to express his feelings. When he turned around, he found that the blackboard was already full of words. A table of trigonometric functions was drawn on the left, and trigonometric function was written on the right. Graphical expression of a function.

The handwriting is still new, it shouldn't be left over from last semester, not to mention what's written on it is the content at the beginning of the new textbook "General Catalog of Geometry".

"Why hasn't the blackboard been wiped yet? Did your teacher teach you yesterday?"

Teacher Song turned to the students and asked.

"Yes! Mr. Shen gave us an arithmetic lesson in the afternoon just after school started! It's really..."

"Yesterday we were supposed to have class at work! But Mr. Shen didn't go to class and changed it to arithmetic. As soon as school started, he said that our progress was behind!" "On the first day of school, we were almost fined [-] copies. The universal theorem! It’s really terrible!”

"If it weren't for Bao Guowei, we wouldn't be able to sleep last night. I'm afraid we would have to copy books until midnight!"

Most of the students still have some resentment in their hearts about what happened yesterday. When they talk about Mr. Shen, the students can't help but want to complain and chirp.

As a teacher of Class [-], Grade [-], Teacher Song naturally knew that the head teacher and arithmetic teacher of this class was Mr. Shen. This was not the first time that he had worked with Teacher Shen, and he knew that doing so was really Shen's style.

Picking up the blackboard eraser, Mr. Song was about to erase the words on the blackboard. When he looked at the words, he suddenly realized that something was wrong.

Although Lao Shen's handwriting is not as good as a dog crawling, it is not as square and beautiful.

Teacher Song was a little curious. Since Mr. Shen didn't write it, who should have written it? It couldn't have been written by a student, right?
"The writing on the blackboard shouldn't be written by Teacher Shen, right?"

The teacher asked casually, which immediately aroused the excitement of several "guaranteed".

"It's Bao Guowei! Bao Guowei! Bao Guowei wrote it!"

"Mr. Shen didn't try to make things difficult for him. He answered all three theorems he asked. He wrote them all on the blackboard."

Several students explained.

"Bao Guowei? Which classmate is it? Stand up and let me take a look?"

Teacher Song was a little curious, and everyone looked at Bao Guowei, who had already stood up.

Because Mr. Shen was so lazy that he didn't even make a duty schedule yesterday, so no one wiped the blackboard. As a result, Bao Guowei was forced to pretend again.

"Okay, it seems that this classmate has a good foundation and the two questions he just asked are also very good. Sit down and we will continue the lecture."

Teacher Song didn't say anything. He still had to catch up with the class. He just complimented casually, put his hand down, and motioned for Bao Guowei to sit down directly.

"Regarding the question raised by the classmate just now, there is a small experiment on page 30 of our book."

The students all turned to this page, which was full of pictures and texts, with drawings of cars and wooden blocks, and a large explanatory text at the bottom, which made people feel dizzy.

"Let's take a look at this experiment: instruments and equipment: square slider, small wooden stick about 20 cm long, small ball, experimental trolley, about 10-15 cm wide, about 30 cm long and 60 cm long, with the same thickness. One piece of planed wood, one piece each of towel and cotton cloth.”

Teacher Song began to chant sutras...

"The second law is: the acceleration of an object is directly proportional to the force, inversely proportional to the mass of the object, and proportional to the reciprocal of the mass of the object; the direction of acceleration is the same as the direction of the force."

……

"The third law is: The action and reaction forces between two interacting objects are always equal in magnitude, opposite in direction, and act on the same straight line."

……

As the get out of class was about to end, many students' minds were already buzzing. Niu Yi's small experiment alone stumped many of them. Later, the second and third laws were discussed.It leads to things like "vector", "instantaneity", "equivalence and inequality".

I also learned a bunch of Western alphabetical expressions. I heard that Niu Er and Niu San also had small experiments. They were also the kind where a picture is followed by a lot of explanations, which makes people dizzy...

"Okay, depending on the time, class is about to end. That's it for this class. I have just taught Newton's three laws to the students. Please do this exercise. I will do it after class next time. Collect it for inspection.”

Teacher Song took a stack of handouts and handed them out to a random student.

After getting it, Bao Guowei looked at the questions on the paper. They were all about theorem judgment questions and experimental process questions about Newton's three laws. There were also a lot of word games in it, but to him, it was really It's pediatrics.

Not long after handing out the handouts, the bell rang, and the get out of class was over. The science class lasted for about an hour and a half. When Mr. Song left, the students all breathed a sigh of relief.

Bao Guowei was about to take Guo Chun and Chen Jinhua to go to the toilet together, when the classmate in the front seat turned over with a handout.

"Bao Guowei, do you know this question? I don't quite understand."

Bao Guowei recognized her. This female classmate was An Shuzhen. On the first day of school, he, Guo Chun, and Chen Jinhua helped her carry her luggage.

(End of this chapter)