"Who?" Lin Zhaoxi was not sure.
Xie Ran was stunned for a moment, and said, "Your family seems a little strange, you don't know what your dad did before?"
"A park ranger."
"What about before this?" Xie Ran was thoughtful, "Don't you think it's strange, Mr. Lin... so... a person, but a park ranger?"
Lin Zhaoxi wanted to laugh, what do you mean by "then...alone..."? Xie Ran's evaluation of Lao Lin is very interesting, but she still said: "Everyone has his own aspirations. Mr. Lin is calm by nature, and wants to be a wild crane."
"The wild crane is a ghost."
Speaking of Lao Lin, Teacher Xiao Xie was not as laid-back and determined as before, and seemed to be a little shadowed.
"Mr. Xie...you have a big opinion on Mr. Lin." She shifted her gaze to the book in Xie Ran's hand and asked, "What's going on? Mr. Lin taught at Sanwei University, how do you know?"
"Student Xiao Lin, don't you know about Teacher Lin?"
"I really don't know." Lin Zhaoxi said.
"Then I can tell you one thing. This training camp originally wanted to invite him to be the head coach, but he refused." Xie Ran paused, and added, "Extremely decisive."
Lin Zhaoxi was stunned, she couldn't help but think of the phone call after the exam, and Lao Lin also extremely firmly opposed her to study in Yongchuan High School.
Lao Lin in Strawberry World doesn't have so many "demons" towards Yongchuan...
"So what I said is still right?" Xie Ran said meaningfully, "Your family is still very strange."
—
While talking, they arrived at a self-study classroom on the top floor of the library.
The sister of the team leader pushed open the door, and a group of junior high school students walked in chattering, and each sat down. Xie Ran put the book back in her hand, straightened her clothes, and walked up to the podium.
Lin Chaoxi stared at Xie Ran's back in dumbfounded, and was very shocked by Xie Ran's shameless attitude of "I won't tell you unless you exchange gossip with me".
Xie Ran stood on the podium and wrote his name on the blackboard.
He looks like a college student, but he looks younger than three years ago: "Good afternoon, classmates, sister Xiao Yan has introduced me just now..." He tapped the blackboard, "My name is these two characters, and now it is A graduate student from the Department of Mathematics of this university will also serve as your class teacher for this year."
"Hello, Teacher Xiaojie."
"The teacher is so handsome~"
The lively students shouted in twos and threes.
"Although our class is a temporary class, we don't see each other a few times a year. But according to the normal assembly class process, we still need everyone to introduce themselves and get to know each other." Xie Ran clicked on the first row, "Let's start with you." .”
"We don't want to."
"Introduce yourself so old-fashioned."
"What's there to say?"
"Isn't that word pronounced Jie? Does Xiaojie mean pee?"
It's so hard to die, Xie Ran first pointed to the Yongchuan University quartet.
Lao Wang, Ah Guang, Lion, and Tiger each said a sentence, and the last "jie" made the whole class roar with laughter.
Lin Zhaoxi couldn't help snickering, junior high school students in the second year of junior high school are no better than elementary school students, they are very rebellious and difficult to deal with.
Xie Ran was still smiling, his eyes fluttered, and he shouted: "Student Lin Zhaoxi~"
Lin Zhaoxi stood up abruptly, all the eyes of the class were focused on her, and she didn't expect that Xie Ran would wake her up alone because she was just taking pleasure in others' misfortune
"We are old friends, please introduce yourself and set an example for these four students," Xie Ran said.
Hearing this, the Yongchuan Middle School quartet exploded.
"We don't need a demonstration!" The little bald head shouted first, "My name is Chen Youguang, from Yongchuan Middle School."
"An Hu, I'm also from Yongchuan Middle School."
"I, Shi Ziyang, am still from Yongchuan Middle School."
"Wang Tianlong, especially from Yongchuan Middle School."
They quickly reported their names and schools, for fear that they would be "demonstrated" if it was too late.
Everyone in the class laughed again, and the atmosphere was very good.
Lin Zhaoxi sat down quickly, feeling that after three years of seeing each other, Teacher Xiao Xie's field control level had improved significantly.
—
The following self-introduction session went much smoother. Most of the people stood up and said their names and schools. Of course, there were more pushy and serious classmates who introduced their names, schools, hobbies, good things and expressions in detail. A "sincere" desire to serve fellow students.
Xie Ran asked that "Chen Chu" classmate to take a seat. Now junior high school is really smart, knowing that after self-introduction the link is to select the class leader, so the more you perform in front of the group, the better.
When the last student who introduced himself sat down, the class fell silent again.
Xie Ran looked at the little faces that had become very boring, picked up the chalk on the table, erased his own name in the center of the blackboard, put one hand in his pocket, and started writing.
"Is this the subject?"
"Is class about to start?"
The children whispered behind him, Xie Ran continued to write, at a certain moment when the noise reached its peak, he wrote the last full stop, turned around and said with a smile: "Quickly answer the question, the one who solves this question first raises his hand. "
"Teacher, do you do the questions as soon as you come?"
"Do you have some conspiracy?"
All of them were top high school students, some of them immediately took out pens and papers, but some difficult children refused to let go.
"Otherwise, the students are all grown up, how hurtful is it to take the exam as soon as everyone comes?"
After Xie Ran finished speaking, I won't explain much.
He began to inspect the entire class, but was very surprised to find that the four children from Yongchuan Middle School who were bluffing just now all fell silent after he finished writing the topic.
They had contemplative expressions on their faces, then each picked up their pens and began to answer without saying a word.
In contrast, students who are still asking "what's the benefit of the teacher's answer" are not so cute.
"It's no good." Xie Ran put his hands in his pockets and shrugged, "But you have already declared the names of your own schools, so let's do it for your alma mater. It's quite rewarding to be the first to do it in front of so many top students in the province. face?"
When it comes to honor, the junior high school students sitting here were instantly inspired, and the last few people picked up their pens and started to answer the questions.
Xie Ran deliberately went to see Lin Zhaoxi, just like the kids from Yongchuan Middle School, after he set the question, the girl had already quickly calculated.
Her neck is drooping, and her white and slender fingers hold the pencil. She seems to have an idea and is trying. After all, she is a child who has experienced the cruel and weird summer camp in elementary school. It has become an instinct to do it as soon as she gets the problem.
That sense of focus and struggle is nostalgic.
Xie Ran shifted her eyes to the right and looked at the boy next to her. She hadn't seen her for three years, and Pei Zhi's classmate was more like a young man.
However, the moment he looked at Pei Zhi, classmate Pei Zhi turned his pen around, raised his head, and looked at him with clear eyes.
Xie Ran smiled and mouthed: "Why?"
Pei Zhi didn't say anything, but just twirled the pen again, and then he gently put down the pencil in his hand.
—
The topics are as follows:
Two brothers sell a flock of sheep, and the price of each sheep is the same as the number of sheep in the flock, and then the income is divided according to the following method: the elder brother takes 10 yuan first, the younger brother takes another 10 yuan, and then it is the brother's turn to take 10 yuan. Dollars, and so on, take turns withdrawing money. At the end of the allocation, it was the younger brother's turn, but he found that the remaining money was less than 10 yuan, so he had to take away the remaining money. For the sake of fairness, the older brother gave the younger brother a knife, and the price is an integer. Ask: How much is the pocket knife
a minute passed...
three minutes passed...
Xie Ran folded his arms to watch, and just as the minute hand was about to turn around again, someone finally raised his hand.
"Student Lin Zhaoxi, soon." Xie Ran said loudly.
Many people in the class were interrupted, stopped writing, and looked at the girl who raised her hand. But the four middle school students closest to Jieran were still immersed in the problems.
Lin Zhaoxi pursed her lips and looked at Pei Zhi in surprise. The two made eye contact, Pei Zhi nodded, and then Lin Zhaoxi stood up slowly.
"the answer is?"
"2 dollars?"
Xie Ran was a little surprised.
At this moment, the whole class was silent again, and most of the students raised their heads and looked at him with uncertain eyes, waiting for the answer.
"That's right."
"The answer should be 2."
"Why are you so fast!"
But before he could speak, the four students sitting in the front row started talking to each other again.
There was a little noise in the class.
Xie Ran's voice overwhelmed the commotion, and he looked at Lin Zhaoxi: "Tell me about your problem-solving thinking."
"At first glance, this question does not give enough information. At the beginning, I was talking about sheep, but suddenly I had to ask how much a knife is, as if I was joking."
"But actually?"
"Actually, if we translate this question in mathematical language, we can see a lot of hidden information."
Lin Zhaoxi paused, subconsciously looked down at the old book on the table, then looked up, and continued: "We can find that the price of a knife depends on the number of sheep, and the latter is the only independent item in the topic. Variable. Let’s assume that there are x sheep here, so the total price of the flock is x squared. And assuming that the younger brother has withdrawn 10 yuan n times before withdrawing the money, and the change is a, the whole formula becomes... "
Xie Ran turned his head and wrote down the answer that Lin Zhaoxi read out on the blackboard.
x squared=10n+10+10n+a=10(2n+1)+a
"Then set the price of the knife as b, we need to establish an equation to connect the price of the knife with the price of change..."
Xie Ran followed what Lin Zhaoxi said, and wrote the second equation on the blackboard.
"There are still too many unknowns. We can take the modulus (20) to eliminate n. The next problem is pure mathematics..."
There are very smart children present, and what many of them need is time to solve problems. When Lin Zhaoxi talked about taking models, this question was no longer difficult for them, but they still listened carefully to all the ideas for solving the problem.
"Any thoughts?" Xie Ran asked.
"It's actually quite simple."
"It takes a little thinking time."
"To grasp the details of all the information in the title."
"There are also details in the equation that must be grasped."
After hearing this, Xie Ran looked at Lin Zhaoxi: "What do you think?"
Lin Zhaoxi showed a thoughtful expression, and then said: "Two points, first, don't be afraid, and second, translate the text problems into mathematical language as soon as possible."
"This is the first lesson of today—mathematical problems. Please think in mathematical language." Xie Ran put down the chalk with satisfaction, looked at Lin Zhaoxi and said, "You are not bad, then you will be the class monitor." He said.