In fact, Xiao Xiao is not ignorant of "Zhou Bi Suan Jing". After all, anyone who has studied history knows that "Zhou Bi Suan Jing" is the oldest mathematics and astronomy work in my country. In addition to a wrong conjecture about the model of the universe, it is more important that it proposes the Pythagorean Theorem and its application in measurement.In addition, there are other contents such as square root, arithmetic progression, and the proportion of sides of similar triangles, etc., but for Xiao Xiao, the difficulty is that these contents are not systematic and written in classical Chinese.What about "If you are looking for the evil to the sun, use the sun to be a sentence, and the sun's high to be a stock", and what "to hold the moment to look at the height, to cover the moment to measure the depth, to lie on the moment to know the distance", Xiao Xiao can roughly see that he is talking about Pythagorean shares Theorem and the method of using moments, but according to the teaching method of the Imperial College to explain word by word, Xiao Xiao may make a lot of jokes.In desperation, Xiao Xiao decided to use her own method to attend class after asking Zheng Bai whether the supervisor would come to inspect the class.Yuxi team organizes, please pay attention.

Early the next morning, Xiao Xiao walked into Guangye Hall with a stack of papers, looked at the students who were sleeping or chatting underneath, and sighed that Zheng Bai really didn't lie to him.He picked up the ruler and slammed it on the table a few times. Seeing that he had attracted everyone's attention, he said calmly, "Good morning, everyone. I am your teaching assistant. My name is Xiao."

"Teacher?"

The man sitting in the middle of the first row looked to be about 30 years old. With a look of astonishment on his face, he murmured in disbelief: "The boy with no hair yet said he was a teaching assistant? I don't know which big family plugged him in." Come in!"

Xiao Xiao glanced at him, thinking that this was probably Zhang Yi, the head of the fasting that Zheng Bai had mentioned.In order to supervise and restrain the words and deeds of the superintendents, Guozijian implements the management system of the superintendents, and the superintendents who are older, educated and have high prestige are appointed as the superintendents.Mathematics is the lowest-level academy in the Imperial College. The older ones either worked hard to pass the exam and went to the Ministry of Industry, or they went to other academies through connections, so most of the rest were under [-] years old, or even just enrolled Candidates who have completed this year's exam.But Zhang Yi is a strange thing, because he neither failed the exam nor was there no one at home, but he just wanted to stay in mathematics and study. In his words, it was the feeling of "enjoying being the head of the school".

Xiao Xiao looked down on this kind of person who has good resources but wasted his life, so he ignored Zhang Yi, but glued ten sheets of white paper to the wall, and then said to the whispering students below:

"I know that you don't like mathematics, let alone me as a teaching assistant, so I wrote ten questions on these ten blank sheets of paper. As long as someone can answer them all, I can not only give up the position of teaching assistant, but also willing Give all my fortune to the one who solves all the problems."

The discussion below suddenly became louder.After a while, a student finally couldn't help stretching his head and asked, "Is what you said true? As long as you can solve all the problems, give all the family property to that person?"

"Of course," Xiao Xiaoyang smiled, "And I can tell you a little bit, my entire family property is at least 1 taels."

If it was in a place like Taixue, Xiao Xiao's 1 taels would not only not attract the attention of the supervisors, but would be ridiculed by the children of the aristocratic family; In the eyes of the prison students who couldn't afford to let them go through the back door, the 1 taels of silver was considered a lot of money.So the supervisors below all took out their abacus with pen and paper, and started to calculate with great interest, but Xiao Xiao smiled complacently, because he was quite confident about his ten questions.

Xiao Xiao’s ten questions range from algebraic operations to geometrical problems, from mathematical analysis to mathematical applications. It can be said that they cover the mathematical knowledge of modern mathematics from elementary school to university. Bach's conjecture".If there are supervisors who can solve the nine world classic mathematics problems including the Archimedes problem of dividing cattle, if there are supervisors who can prove the conjecture that has puzzled modern mathematicians for more than 200 years when they are new to prime numbers, then Xiao Xiao admits, even if he spends all his wealth, he is willing to do so.

All the students fell into a state of frenzy, and Xiao Xiao's first class was spent in the sound of the abacus clicking and the sound of flipping through the paper.The bell rang for the end of get out of class, and the supervising students who had been looking forward to the moment when the chief of staff would lead everyone to eat in the dining hall were unwilling to move their positions for the first time, lying on the desks with their eyes shining.Seeing this, Xiao Xiao said helplessly: "Go to lunch first, don't be in a hurry."

Everyone stood up in a hurry, Xiao Xiao drove them to the dining hall like chickens.Because the Guozijian class lasts all day, Xiao Xiao doesn't want to eat, so she sits at the table and writes math textbooks.The textbooks of mathematics are mainly "Ten Books of Suanjing", which are "Zhoubi Suanjing", "Nine Chapters of Suanshu", "Sea Island Suanjing", "Zhang Qiujian Suanjing", "Xiahouyang Suanjing", "Five Classics" Arithmetic", "Jigu Mathematical Classics", "Zhushu", "Five Cao Mathematical Classics" and "Sun Tzu Mathematical Classics", among which "Zhoubi Mathematical Classics", "Nine Chapters of Mathematical Sciences" and "Zhushu" are the first grade The main content of study, "Wu Cao Suan Jing" and "Ji Gu Suan Jing" are the books to be studied in the second grade.Xiao Xiao flipped through it briefly, and found that there were not only repeated knowledge points in these books but also a lack of systematic organization, so he planned to compile a textbook according to the order of modern mathematics learning.

"Addition, subtraction, multiplication and division..." Xiao Xiao was writing, and suddenly felt that there was an extra person behind her, and when she looked back, it turned out to be Zhang Yi.He looked at the Arabic numerals written by Xiao Xiao with interest, and when Xiao Xiao noticed that he asked eagerly: "What are you writing? And the pen in your hand, why is it the same as ours?" no the same?"

"This is the character of the Western Regions, this is one, this is two..." Xiao Xiao pointed to each number and explained to Zhang Yi, "One, two, three, four in our country is too complicated to write, and using this simple character can be effective Save time and shorten the calculation process. If you want to calculate addition, how many characters will be written for this question? But if you use this kind of characters, then you only need to write such a vertical formula."

Zhang Yi opened his mouth wide in shock: "It's still like this!"

Xiao Xiao nodded, and then took out the piece of paper that she wrote for multiplication and division: "Do you know the counting method proposed in "Sun Tzu's Mathematical Classics"? If we want to calculate multiplication, two numbers within ten The multiplication of numbers can be solved with Jiujiugejue, but once it exceeds, you need to use calculation chips; but with this kind of characters, you only need to write such a vertical formula."

"is that a lie!"

Xiao Xiao looked back after hearing the sound, only to find that the supervisors returning to the school one after another were watching him explain mathematics to Zhang Yi behind her back.Seeing that someone didn't believe it, Xiao Xiao immediately asked him to name two numbers, and then asked him to calculate the multiplier.Xiao Xiao started to make vertical calculations under the gaze of everyone, but the student had just started, so Xiao Xiao put down her pen and asked, "Is it three thousand 510?"

"Hurry up!" An anxious prison student next to him squeezed away the man and continued to fiddle with the counting chips. After half a quarter of an hour, he shouted loudly: "It's really three thousand 510!"

The supervisors crowded towards Xiao Xiao one after another, wanting to see how the vertical formula could figure out the answer so quickly.Xiao Xiao quickly raised her voice and shouted: "Don't squeeze, don't squeeze! Go back to your seat!"

Fortunately, the supervisors were more obedient, no matter how curious they were, they obediently walked back to their seats, and looked at Xiao Xiao longingly.Xiao Xiao said speechlessly: "Originally, I planned to compile a textbook with three chapters and then explain it to you, but it is rare for you to be interested, so let's talk about the Roman numerals in the afternoon. Of course, the rewards for these ten questions still exist. You might as well work hard outside of your studies, at least you can save ten years of struggle.”

"What is arithmetic? Arithmetic is the study of concepts such as quantity, structure, change, space, and information. It is the most widely used by us..."

Xiao Xiao started talking about what mathematics is and its classification, all the way to the appearance of Roman numerals, and the afternoon passed quickly.When the bell rang for the end of get out of class, Xiao Xiao just finished explaining the significance of the appearance of Roman numerals in mathematics, so he apologized to the supervisors and said: "That's it for today. Regarding how Roman numerals perform four operations, I will I will explain it to you in class tomorrow."

Originally, Zheng Bai was supposed to come to class tomorrow.However, since each doctor is in charge of lecturing a book, the book "Nine Chapters of Arithmetic" that Zheng Bai wants to teach has already taught one-third, so he gave up all his classes to Xiao Xiao to make up for Dr. Wang's lack of knowledge. schedule.Now it is the fifth day of junior high school. Usually, Dr. Wang would let the supervising students study his own class, and then give the supervising students the key points on the [-]th so that they can pass the exam. idle.

However, the supervisors were not dissatisfied. Instead, they enthusiastically asked Xiao Xiao where to get Xiao Xiao's charcoal pencils, and if there was any homework left for them.Xiao Xiao was naturally very happy with this group of studious students, not only promised them to get a batch of charcoal pencils for them within three days, but also promised them to get a set of exercises for them to do.Xiao Xiao, who returned to the Doctor of Mathematics Hall, packed up his things and left. He first went to the dessert house and asked Cong Xue to help him get another [-] charcoal pencils. Build a batch of molds.

These molds were nothing but what movable type needed.After getting rid of the first floor, Xiao Xiao asked Liu Kaize to send someone to pick up the pillar from Ancheng, and then placed him in a courtyard in Qingyi Garden, and asked him to help him build something.From making cake molds to waterwheel models, Zhuzi's talent in carpentry is gradually revealed, and his honesty and honesty have won Xiao Xiao's trust.After returning the deed of sale to Zhuzi, and signing the non-disclosure agreement and labor contract, Xiao Xiao confidently handed over most of her ideas to him, hoping that he could create objects he had seen in modern times.

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