Chapter 48: geometric

Lao Lin’s math class is generally so casual.
The school day of the summer camp is on the fourth day, and there are still six days from the mid-term elimination exam.
Lin Chaoxi and Yuzhi’s canteen work continued, but this time, Hanamaki and Lu Zhihao no longer slept, and the young children got up early and went to work in the cafeteria with them.
However, this loyalty is mainly due to Lao Lin.

At the Oasis Base Grand Canteen, Lu Zhihao stood in front of Lao Lin and expressed his wish to continue the class.
Lao Lin yawned and was mopping the floor.
"In the morning, what class?"
"But Master, we will soon be out of the mid-term exam." Lu Zhihao said.
Lin was too sleepy, still blinking, listening to him shouting, suddenly spirit: "This is my master, you can not copy me!"
"That... what am I called?"
"It's all false names." Lao Lin turned his head and caressed Lu Zhihao's furry head lovingly, saying, "Just call Master."
Lu Zhihao: "Master!"
Lao Lin: "Hey~"
Lin Chaoxi was mad at her death. She found that Laolin had changed since the day when she was deeply in the rain.
Lu Zhihao was very happy. Lao Lin actually admitted that he was an apprentice. He was very flattered. He quickly took out the book and asked him seriously: "Master, can you teach us geometry today?"
Lao Lin continued to mop: "Why do you suddenly want to learn geometry?"
"Because... because today I have to test..."
"That's a test."
"Yes, but I still have a lot to understand, I am afraid I can't test it."
"Why are you afraid that you can't test it?"
The more the old Lin asked, the more careless, Lu Zhihao is getting bigger and bigger.
Lu Zhihao: "Because... because..."
Hanamaki: "Because we can't test it out, we have to pack it home~"
Lao Lin finally stopped and looked back at the Hanamaki.
Lao Lin: "Do you think I have to ask, why are you afraid to pack home?"
Hanamaki tried a few times.
Lao Lin: "What does this have to do with me?"
Lin Zhaoxi: "..."
At this time, Lao Lin said with a strong heart: "Can you test well, this has nothing to do with me. Because if I have children, I will tell him that learning itself is a process of happiness, and while enjoying knowledge, don't be afraid of challenges. The so-called examination is essentially a cruel elimination standard set by the whole society. It can require many people, but if you don't care, it is not that important."
Hanamaki and Lu Zhihao listened to each other and looked up at Laolin.
Lin Daixi turned his head down, his nose was a bit sour, and his father was too open-minded.
Lao Lin probably thought that they could not understand what he was talking about, grinning, and changed the saying: "I mean, I mainly don't pack tickets, you can test well, so you are willing to continue to follow me, mathematics. What is it?"
Lu Zhihao, Hanamaki, and Yuki are not thinking about each other, and they say the same way: "Will!"
"What about you, a clever little girl?" Lao Lin lazily moved to her.
Lin Zhaoxi: "I think you said this on your mouth, but..." You can't believe what you said, "Okay."
"Very good!" said Lao Lin, reaching out into the palm of his hand. "Since everyone is almost willing, then we will agree?"
Their four subconscious hands clasped up.
Lao Lin: "Since everyone has not pursued much, and the basics are also boring, then just learn?"
Everyone started to nod together inexplicably.
Lao Lin asked Lu Zhihao: "That kid, do you want to learn something?"
Lu Zhihao's entire face is wrinkled, and I feel very eager to say "That Master wants to learn geometry"...
Lao Lin pondered for a moment and said, "So, let's talk about number theory today?"

Lin Daixi was so teased by Lao Lin for so many years that he was basically immune. However, Lu Zhihao's flower roll is pure and cute, and it is still basically in a state of group.
In fact, later, Lao Lin still talked about geometry. The textbooks he can use are limited. Lao Lin looked at them for a long time. Their schoolbags simply took them to tear the workbook and continued to paint.
The long table was filled with thorns, and the sky was not fully lit. The scent of steamed rice in the cafeteria was immersed in a very strange warm and relaxing atmosphere.
Lao Lin named Lu Zhihao: "You just said geometry, then talk about what you think is geometry."
"Graphics... circles, triangles, squares... what..."
"There are line segments!" The flower roll added, "The line segments and points are counted."
Lao Lin nodded and smiled: "Is the equilateral triangle that you just made done?"
Lu Zhihao's scrolls are each raised. When Lin Xixi and Yu Zhi are still working, they secretly listen to one ear.
"Why do you say that each side of the triangle you make is equal?"
"I... I am measuring!"
"The amount of light is not enough." Lao Lin is undecided, laughing: "We have said yesterday that the discipline of mathematics is a process from scratch, but not only mathematics, physics, chemistry, etc., etc., they all have very The long process of discipline construction, please note that at the time, all mathematics related knowledge was relatively fragmented. But at this time, there was a person who combined all the scattered knowledge in one way to build mathematics. A rigorous system of deductive argumentation, opening the door to human civilization, and establishing a model for all disciplines in later generations, all of which are embodied in a book, called "Geometry Original."
"Euclidean!" Hanamaki answered.
"Yes, remember this name and this book." Lao Lin said, "In a sense, the modern scientific civilization of mankind is based on the logical system of this book. It is the most subtle in its interpretation. The method, and the rigorous process of argumentation." Lao Lin grinned, "If the person who studies math tells you not to look at "Geometry Original", because the geometry mentioned above is outdated for modern mathematics, it must be because he did not read when he was a child. After this book, we have to sympathize with him."
"So the lucky kids~" Lao Lin asked them to take out the pen and continue to preach: "Let's take a look at it. What did Geometry originally say? First, it made 23 definitions at the beginning...

He put down the tray, sat in front of the old forest, and began to listen carefully, Lin Lixi got up and did other things.
When she was a child, she also sat in front of a small desk by the window, listening to Lao Lin enthusiasm to tell her "Geometry Original." Enthusiasm is the most infective thing. It is the first time she realized the rigor and beauty of mathematics thinking. The moment of being witnessed is suddenly and cheerful, and she can still feel it.

The study time in the morning is very short, especially the lecturer is Lao Lin, two hours, as if a blink of an eye has passed.
When Lu Zhihao and Hanako left the cafeteria, they were still unfinished. He walked forward with his bag and said nothing.
There are more and more people on the way to school, many children are holding books, but among them, even Lu Zhihao, did not take the time to read.
The flower roll jumped a few steps and returned. He took a slap on the shoulder: "Genius brother, do you still think math is boring?"
Hey: "It’s not too long to be bored."
Lin dynasty heard the words and raised his ears.
"But those things are not too simple for you?"
"There is no contradiction between simplicity and fabulism."
I say so.
The flower roll smashed: "Why do you speak like a master?"
"Listen for so long, of course, like Master."
When I heard this, Lin Chaoxi felt very wrong. Why did the company’s capital begin to call Master Lao Lin and shout so seriously?
"You wait, that is my master!" She followed and protested.
"Yeah, Master always likes to say those words." Hanako and the side of the chat chat and go forward.
"Master also likes to say that the roll brother, hahaha." Lu Zhihao also leaned over, not listening to what she said.
The safflower green trees swayed in the wind, leading to the path of the teaching building, and the sunlight leaked through the gaps in the branches.
Looking at the back of their three, Lin Chaoxi suddenly laughed.

Although for them, mathematics learning has become a process that seems to "learn casually" because of the arrival of Laolin, but it is very different.
But for the other students in the Jinbei Summer Camp Xiaogao Group, the shadow of the packaged home is still too bad.
Teaching building, small high group classroom.
On the fourth day of the class, Lin found that the seats in the classroom seemed to have changed.
But the so-called seat change does not mean that someone has moved the table, but the group that originally sat together has changed. Some people have gone forward, some have gone to the corner. In short, it seems that many groups that had a good relationship have produced crack. .
She poked her, pointed to the seat in the classroom, and whispered, "Genius brother?"
He looked at the classroom and replied in a concise manner: "The 7th group of 31 students yesterday, the fifth group of 44 points, and the sixth group of 45 students were kicked out of their respective groups. The place."
Lin Chaoxi sucked the air.
Hanaju rushed to them to punch: "Thanks to the three students for their benevolence, my flowers are unforgettable!"
Lu Zhihao pushed him awkwardly.
Continued: "The sixth group of 76 students yesterday went to the third group, the seventh group of 82 points, went to ... the first group..."
When I talked about it, Lin’s eyes moved to the first group, which is Zhang Liang’s group.
Sure enough, Zhang Liang’s position in front of him changed a new person. The classmate turned his head and Zhang Liang. They were chatting, talking and talking, and laughing and laughing, they seemed very gregarious and very happy.
Lin Zhaoxi involuntarily went to see Chen Chengcheng.
Chen Chengcheng’s classmate was still sitting behind Zhang Liang and was not kicked out of the group, but he kept kneeling on the table and looked very depressed.
When they were in class, Zhang Liang did not know what they were talking about. Suddenly everyone went to see Chen Chengcheng.
Zhang Liang said something to Chen Chengcheng.
Chen Chengcheng’s classmate looked back at her and her head was pressed lower. Lin Chaoxi frowned.
At this time, Zhang Liang suddenly looked at her with a very provocative look.
Lin Chaoxi is very inexplicable, what to do, she did not want to see the courage, set up what poor learning group... 2k novel reading network