When the fifteen minutes were up, the teacher stopped the class and asked the four students to take turns marking each other's papers and explaining the topic. Because everyone was a competitor, there was no fear of students cheating.
Lin Chaoxi handed his paper to a girl at the left rear.
"You can actually solve the additional questions?"
Xiaolu probably saw it when exchanging papers just now and was shocked. Just because of an additional question, the tone of speaking to her has become very polite.
Lin Chaoxi was sweating inwardly, but on the surface he had to say seriously: "Yes, I think it's very simple."
The look Lu Zhihao gave her had turned into admiration.
Teacher Xu began to explain the questions and give the answers at the podium.
Lin Chaoxi took this opportunity to flip forward through his Olympiad mathematics book and review the previous parts.
Although some of the content exists in Xiaolin Chaoxi's memory, she has not yet fully understood it and has not yet mastered its application, so it is useless.
"The answer to the fourth word problem is 40. The starting point of this problem is the formula we mentioned earlier. Students, I have said many times, what should be done first when solving a problem?"
"Formula~"
The children below answered in a drawn-out tone.
As usual, Lin Chaoxi turned around to confirm his answer, and then was stunned.
She pointed to the red cross on her paper and said to the little girl sitting behind her: "My answer is obviously correct."
"But you didn't write the process of solving the problem." The little girl behind pushed her glasses and added, "You didn't even write the word 'solution'."
Lin Chaoxi choked.
The reason why she didn't write down the solution process was not because she was afraid that the solution process was too difficult and would scare other children, but simply because she wrote with her left hand and her speed was too slow. She was afraid that she could not finish the problem, so she just used her brain to calculate the whole process and wrote down the answer at the end.
But she didn't expect that she would meet such a real "little teacher".
But it's true, they are rivals, it's only natural.
"But my answer is correct, you can't blame me for all my mistakes," said Lin Chaoxi.
"How does one know if you copied from someone else?" the little girl said sinisterly.
Hearing this, Lu Zhihao turned around and said in a particularly loud voice: "What are you talking about!"
Children from the north sound particularly powerful when they say this, especially chubby little Lu, who still has plenty of energy.
"Lu, Zhi, Hao!" Teacher Xu's lecture was interrupted and he looked unhappy.
Lu Zhihao stood up and complained: "Teacher, Zeng Shanshan changed the questions randomly!"
Lin Chaoxi didn't know why Xiao Lu suddenly became protective of her. But Teacher Xu had already walked down from the podium, so she could only stand up as well.
Xu An looked at his son who was standing with his head held high, and the little girl who was standing next to him with her head bowed. Without saying a word, he picked up the controversial test paper.
Her first reaction was that the paper was empty, and it was only then that she saw the huge X.
On the test paper, there were solution steps for questions 1-3, but there were none starting from question 4. After that, there was only the answer written on each question, and the handwriting was crooked and very ugly.
But when she looked carefully at the answers to each question, she was surprised to find that all the numbers were correct.
Like Zeng Shanshan, she also thought that Lin Chaoxi cheated by copying Lu Zhihao's answers because he was pressed for time. But as a teacher, she certainly wouldn't easily draw conclusions for her students.
She took a step back and took Lu Zhihao's test paper from Lin Chaoxi's desk and compared the two papers. Lu Zhihao did well on this paper, with every question correct and his problem-solving process was also good, except for question 10...
Question 10 was left blank because his son had no idea how to do it.
But Lin Zhaoxi's...
Lin Chaoxi wrote down the answer to question 10 accurately!
Xu An held two test papers in his hands, stared at Lin Chaoxi, and asked seriously, "How do you know the answer?"
"I calculated it." Lin Chaoxi turned slightly and answered.
Xu An was surprised. Not because Lin Chaoxi said he figured it out, but because of Lin Chaoxi's current performance.
Lin Chaoxi used to have a bad personality, probably because she was an orphan, so she had a strong sense of self-esteem. The smallest thing would make Lin Chaoxi cry and make a fuss, and that was how the conflict between her son and Lin Chaoxi came about. Even as a teacher, she didn't dare to say too much to this child, for fear that her words would hurt the child's fragile self-esteem.
If she had asked this question before, Lin Chaoxi would have probably cried and made a fuss. But now, the same little girl stood in front of the table, half of her body bathed in the sun, half of her face turned sideways, as if she didn't think there was anything wrong with this question and answer.
Very calm and confident.
Lin Chaoxi certainly didn't know what Xu An was thinking. But even if Teacher Xu expressed her doubts, she could only say that she really thought it was okay to just write down the answers.
"Did you figure that out in your head?" Teacher Xu asked.
It seems that he can also do mental arithmetic.
Lin Zhaoxi nodded.
"No draft?"
"not."
Teacher Xu was still skeptical and asked, "Tell me about your thinking process for the last question."
The last question is about two ships A and B travelling towards each other. There is a ship C behind ship B, which bumps into ship A and then turns back. The question is about the distance travelled by ship C.
Lin Zhaoxi looked at the question, her mind suddenly running wild, unable to speak for a moment. In her memory, it seemed that there had been such a moment a long time ago.
The same question, the same Olympiad class. The primary school student was called by the teacher to ask about his solution, but he just gave the answer. When the teacher asked him what his solution was, the primary school student said something very calmly. However, the whole class, including the teacher, was shocked and speechless.
The only difference from this time is.
The incident happened in the Mathematical Olympiad Advanced Class of the Experimental Primary School next door. It was Pei Zhi, not her, who was called up by the teacher to ask why she only wrote down the answers.
How did Pei Zhi respond at that time?
——"I calculated an infinite series, but it was a long process, so I didn't write it down."
Later, Lin Chaoxi asked Lao Lin and found out that what he meant was, I calculated the distance of each return trip of Ship C and added them together. Lao Lin also comforted her, saying that the computer teacher von Neumann also calculated in this way, it was a stupid method, and Pei Zhi was nothing special.
Later, Lin Chaoxi looked up who von Neumann was. When she saw that Mr. Feng, who worked on computers, not only invented computers, but also developed atomic bombs, was the founder of game theory, and made important contributions to the development of quantum mechanics, she realized that Mr. Lin was saying that she was uneducated.
It was also from that time that she gradually understood what genius meant. And now, she was able to write the answer to this question directly, just because at that time, she remembered the question and Pei Zhi's answer very clearly.
Lin Chaoxi took a deep breath and wanted to answer truthfully that he had only seen this question before, but he heard the teacher say: "You don't have any ideas, you just added them up?"
Uh! That’s not the case.
"Sit down." The teacher collected her paper and said, "You did get 100 points on this paper, which is very impressive."
Lin Zhaoxi opened his eyes wide, he was actually praised?
After Teacher Xu finished praising me, he said in a tone of admonition: "Although you are very smart, Lin Chaoxi, I still hope that you can try to solve the problem using the method I teach you. Mathematical Olympiad itself is a kind of thinking training..."
Lin Chaoxi's heart was filled with sweat.
"Even if I can do mental arithmetic, how can I calculate it without the problem-solving process? You are just biased towards the teacher!" At this time, Zeng Shanshan, who had always been dissatisfied, said.
Lin Chaoxi didn't know what was wrong. If it was her previous self, she probably wouldn't have said anything. But at that moment, she thought of Pei Zhi and suddenly turned around and asked, "How many questions are there in the Jin Cup competition, and what are the types of questions?"
Zeng Shanshan Petrochemical.
"If you don't know, I can tell you. The Jin Cup competition has a total of 10 questions, 4 fill-in-the-blank questions, 6 multiple-choice questions, and no application questions. In other words, the Jin Cup competition itself does not require the problem-solving process. Do you know why?"
Zeng Shanshan was speechless. Lin Chaoxi paused and continued, "Because there are too many ways to solve the elementary school Olympiad math problems, whether it's clever calculation or forced calculation, there is no unified standard. Teacher Xu just said that the Olympiad math is a training of thinking, so using a unified standard to restrict thinking is itself questionable. Therefore, the elementary and high school group only requires filling in the answers. Although I only wrote the answers, is there any problem with this?"
Hearing the childish and righteous defense based on years of experience, Lin Chaoxi felt that he was very shameless.
The whole class was silent, everyone looked at her, speechless. At that moment, Lin Zhaoxi understood what Pei Zhi was facing at that time.
"Lin Zhaoxi!" Finally, a female voice stopped her.
She glanced at the female teacher who was speaking, nodded, and sat down.
Zeng Shanshan angrily changed the × into √, and the matter came to an end.
Lin Chaoxi sat back in his seat, wondering whether he should go to the Experimental Primary School to squat down and take a look at Pei Zhi. He was really a little worried.
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