Emperor Xiaoyao of Tang Dynasty

Chapter 117 Let's learn punctuation first (please subscribe)
Standing on the top, Jin Yu felt a headache looking at the students of different ages below, some were only seven or eight years old, and some were already seventeen or eighteen.No matter, let me introduce myself first, Jin Yu cleared his throat, and said: "My name is Jin Yu, and I am responsible for teaching you new-style arithmetic. You can call me Mr. Jin, and Dr. Jin is also acceptable. The teaching method is up to me. If you can't accept it, you can withdraw, as long as your parents agree."

"In my class, those who don't want to learn can sleep and read books, but they can't make noise, let alone whispering! Of course, snoring is not allowed when sleeping."

It was the first time for the students of the Tang Dynasty to hear such an unusual opening speech, and for a while there was suppressed laughter from below.

"Even if you study poorly, as long as you want to learn, I will not give up on you, but if you give up yourself, then I can't do anything about it. My teaching is different from other doctors. If you don't understand something, you can ask at any time. As long as you Just raise your hand first, just like this." Jin Yu made a gesture of raising his hand, giving an example.

"Next, I would like to invite the students to introduce themselves." Jin Yu pointed to a young man on the left and said.

"Student Qin Huaiyu." Sitting in the front row, Xiao Qin stood up and bowed to Jin Yu and the other students, and then continued.

"That's right, just introduce it like this." Jin Yu praised Qin Huaiyu, and motioned for the next student to continue.

There were only less than 30 people in the class, and it didn’t take long to introduce them one by one. Some of them were Jin Yu’s old acquaintances, Li Chengqian, Li Ke, Li Tai, Cheng Huaimo, Qin Huaiyu, Changsun Chong, Mencius Mo, there is even a white-faced kid who claims to be Li Zhi!Jin Yu was slightly taken aback. He didn't know that Li Zhi was still a suckling baby, and he only said that the baby was the Ninth Prince during the wedding introduction, but Jin Yu had never studied Li Er's genealogy, so he definitely didn't know. .So he took it for granted that this is the future emperor, of course, the premise is that Li Chengqian is still so disappointing.

"Anaithmetic is ubiquitous in our daily life, from how much we spend in a day, how to save money on shopping, to how much the court collects in a year, how much each government budget is, how to make the country and the people rich and powerful more effectively, all of them are used Arithmetic." Seeing that some of the students didn't understand it very well, Jin Yu made another popular analogy, "Everyone knows how to ride and shoot, right? I'm afraid it can only be a rough estimate of how far a bow and arrow can shoot? But you have learned arithmetic well. , you can calculate very accurately! How can the trebuchet hit the target more accurately? You can also calculate it. If you want to have these skills, you must lay a solid foundation! This is the principle of thousands of miles. Well, let's start to learn the first lesson of arithmetic-knowing numbers``````"

When Jin Yu came here, he brought a few chalks with him, and they happened to be used.Write the Arabic numerals 0-9 on the blackboard, and then mark the Chinese characters below, in case others don’t know it, so it’s easy to understand, isn’t it?
"These strange symbols will accompany us throughout the teaching process. Let's get to know them and write them five times each." Jinyu pointed to the Arabic numerals and assigned a homework, and then wrote the addition and subtraction symbols according to the textbook. On the blackboard, and copied a few practice questions.Jin Yu's thinking is very simple. These students are from extraordinary backgrounds and have done a good job in enlightenment education. It's just that they are not familiar with the algorithms of later generations of mathematics, so there is no need to carry out enlightenment education like elementary school students.

Chang Le stared blankly at Jin Yu who was writing on the blackboard to prepare lessons, feeling very complicated. When she introduced herself just now, she used the pseudonym "Li Zhi".She obviously saw Jin Yu's expression startled, she thought she had been recognized, and blushed a little, but she didn't know that both of them were wrong, it was a big or small misunderstanding.

After Jin Yu finished writing the exercises on the blackboard, imitating the teacher of later generations, he went down for a walk, and took a look at how the students wrote, but the result was horrible.Brushes are not very suitable for writing Arabic numerals. Some students write big characters, and they don't know that paper is expensive!Some students were working together, and the numbers they wrote looked awkward. What made Jinyu feel even more awkward was that the students wrote the numbers vertically!Don't be afraid to tilt your head a little bit.

This still doesn’t work, well, let’s talk about it.Jin Yu walked up to the podium, tapped the podium with a blackboard eraser, and said, "Everyone stop, maybe some students didn't see how to write these numbers clearly just now, I will mark it for everyone, everyone remember it, and write like this in the future."

After Jin Yu finished speaking, he used chalk to mark the writing direction and arrow next to the number, which was clear at a glance.These years, I have never seen a teacher tell you how to write this word, everything is very fresh.

After Jin Yu finished marking, he clapped his hands and looked at what he had written. There was nothing wrong with it, and he spoke to the students below: "There is one more thing I need to explain to everyone, that is, to learn new-style arithmetic, everyone needs to change their writing. I am used to it, and writing from top to bottom may not be suitable. When you write on the blackboard, you need to write from left to right, just like I wrote." Jin Yu picked up his textbook and showed it to everyone, although the words could not be read Clear, but the direction of the font can still be seen clearly.

"Sister~~Dr. Jin, this writing rule has been written for more than a thousand years. I'm afraid it's not good for you to change it without authorization?" Qin Huaiyu thought more, fearing that Jinyu would be criticized, he raised his hand and stood up to remind Jinyu.

"Nothing is static, everything should conform to the trend of history, hasn't the new type of mathematics appeared before?" Jin Yu motioned Qin Huaiyu to sit down, and explained with a smile: "Let's say this is a top-down Get used to writing. In ancient times, there was no paper, and everyone basically wrote on bamboo slips. Why did you write from top to bottom? I thought it was for the convenience of looking, not the convenience of reading.”

Jin Yu reached out and took a piece of paper from Qin Huaiyu's desk, rolled it up, and said, "Look, everyone, for example, if this is a bamboo slip, is it convenient to pull it left and right? Or up and down? Don't forget, the ancient bamboo slips were not so short. It’s written one volume at a time, and with a little more text, it’s more than ten feet long.”

"Left and right are more convenient." Li Chengqian had the highest status among the students, and he had no ill feeling towards Jin Yu, so he cooperated and said.

Jin Yu nodded towards Li Chengqian, thanking him for his cooperation, and said: "People are partly lazy. Since it is so convenient, I just get used to it. People still have part of blind obedience, so later generations also I learned it without thinking, and I didn't think about changing it."

"These symbols are also created by Dr. Jin himself?" Li Chengqian was not used to Jin Yu's new address, and almost called it wrong.Pointing to the punctuation marks written on the blackboard by Jinyu, he asked.

"It's called 'punctuation mark'. It's used to break sentences. I didn't create it. I just think it's easy to use. I just took it and used it." Jin Yu almost patted himself on the head, how could he forget this? Stubble?There are no punctuation marks now, and they will inevitably be used in the teaching process in the future, so they explained together: "Speaking of punctuation marks, this is a long story."

After coming to the Tang Dynasty, Jin Yu somewhat still had a sense of superiority of later generations. This sense of superiority arose because of his familiarity with the general trend of history, and because of these advanced things.

The students below look forward to it. People of all ages have thirst for knowledge and curiosity, but they are suppressed after they mature.

Seeing that most of the students below looked at him expectantly, Jin Yu started talking nonsense again: "During the Xia and Shang Dynasties, I am afraid that there were not many words, and it was very troublesome to write a family letter at that time, you had to use a sharp stone Carved on tortoise shells or bamboo, better families use bronze knives, but they are not durable? They need to be changed after engraving a few words, so there are only a few words in a letter from home. Understood, no one would bother to use punctuation to break sentences, after all, engraving punctuation is also a waste of time, right?"

"Everyone can imagine that the minister said to Shang Tang, 'Head, let's clean up and beat Xia Jie'. Shang Tang thought it was a good idea, and raised his hand to engrave 'agree' on the bamboo slips. But the knife is not easy to use. , I haven't finished engraving yet, and I'm blunt again, so I have to mutter a few words, motherfucker?"

Where have the following students seen a teacher who lectures like this?Just like listening to a joke, I couldn't help but burst out laughing.

Jin Yu was not annoyed, and after the students finished laughing, he continued, "Think about it, everyone. In such an environment, who would want to use punctuation? Isn't this asking for trouble for yourself?"

"In the Qin Dynasty, people still inherited the habit of their ancestors. The first emperor worked hard to unify the characters, and he didn't pay attention to punctuation at all. At that time, there was still no paper, and bamboo slips were generally used. How hard is it to make bamboo slips? If there are two more characters, write two more. There is no need to make punctuation marks take up space, right? In terms of the environment at that time, using punctuation marks was a waste.”

"It is reasonable to say that when the Han Dynasty had paper, writing was also convenient. There should be punctuation, right? But there were still no characters at that time, because there were few characters and not many people could write. Besides, the transportation across the country was not as convenient as it is today. It is a big project to let the common people know that it will not be completed in three to five years. Emperor Wu of the Han Dynasty was a good emperor, but he thought it was not worthwhile, so he decided to follow the old practice, so no one Use punctuation."

The little girl in Changle finally couldn't hold back her laughter when she saw what Jin Yu said was interesting.Li Tai looked disgusted. Can a little doctor like you comment on the emperors of all dynasties?But he wasn't out of his wits, he didn't speak out to spoil everyone's interest.

"In the future, it will be the Three Kingdoms, right? My ancestors couldn't stand the war and went away. Who would have the heart to make this gadget? It's more important to eat and save life, so this matter has been delayed again. Now, The country is prosperous and the people are safe, the singing and dancing have been promoted, and the conditions for promotion are also met, so I will tell everyone, if you think it is easy to use, use it, if it is not easy to use, don’t use it, and don’t force everyone.” Jin Yu made a long speech, and finally put this thing History has been muddled.

Jin Yu's nonsense is not completely useless, at least the classroom atmosphere is much more active.Everything is in harmony.However, when the get out of class was about to end, Jin Yu also found the inconvenient place, that is homework!This math is not the same as Chinese class, it needs a lot of practice to lay the foundation.Most of the printed products these days are indentations, and those with better conditions are positive mold printing. No one has seen such math problems, let alone printing. It seems that it is necessary to engage in movable type printing, at least this It would be even better if the practice questions don't need to be copied on the blackboard, and then students can copy them by hand, and then use this textbook or something.

(End of this chapter)