Ten students from each of the fourth and fifth grades of the school were selected, and in the third class in the afternoon, the teacher gave a lecture in the activity room.

It may be that Donggang Primary School has never participated in this kind of competition, and the teacher has little experience, and the question type is different from the question type of the Olympiad competition that Zhou Tiantian has participated in, and the difficulty is not enough.

Compared with Chang Yanzhe's question, it is too much worse.

Zhou Tiantian listened to the teacher below, and the more she listened, the more she felt that something was wrong, and her brows were furrowed and she shook her head.

The teacher who gave the lecture was not Zhou Tiantian's homeroom teacher, Mr. Jiang, and he was not very familiar with Zhou Tiantian.

Seeing Zhou Tiantian frowning and shaking her head, she thought that this baby was making trouble, so she called Zhou Tiantian up.

"That classmate, yes, the shortest one.

Come, stand up and tell me, do you understand what you just said? Why do I look at you and shake my head? ”

Zhou Tiantian stood up obediently, "Teacher, it's not that I don't understand what you said, it's that what you said is not quite the same as the competition question."

These questions are too simple, and it is impossible for the competition to come up with such simple questions. ”

Zhou Tiantian's voice was crisp, her round face and big eyes looked well-behaved and cute, but the words she said surprised everyone.

"What? What did you say? ”

The teacher standing on the podium was stunned, and the other students who were listening to the class together were also dumbfounded.

Except for the students in the first class, no one else knew about Zhou Tiantian, and they all looked at Zhou Tiantian with wide eyes at this moment.

What class of students is this? Such a crazy tone? Do you also say that the teacher's questions are simple? Is this still called simple?

"This classmate, can you repeat what you just said?" The teacher looked at Zhou Tiantian and frowned slightly.

"I said these questions are too simple, and they are not the same as the question types of the competition."

The things to be tested in the Olympiad are basically not taught in compulsory education, although they also originate from the school curriculum, but they are much more difficult than the normal courses, and the questions are deeper.

But the questions made by this teacher are basically within the scope of their learning, but they are only slightly more difficult, and if they train like this, it is estimated that their school will be completely wiped out.

"Yo, you're not too small, you're talking as if you've competed.

Are these questions still easy? Simply, how many students can get it all right? The teacher was a little angry, and his gaze at Zhou Tiantian was a little unkind.

"I can, I'll do all these questions." Zhou Tiantian didn't care about that, went to the podium with chalk, and quickly made all the five questions on the blackboard.

Then, Zhou Tiantian asked a question of cows eating grass at the bottom, "This question type is the question of the competition, let's try it?" ”

The students below were dumbfounded, looking at Zhou Tiantian's question, their eyes turned into mosquito coils, and even the teacher was stunned.

Most of the primary school teachers in this year are secondary school graduates, that is, normal secondary school students, and naturally they also studied mathematics when they were studying.

But when you teach, you don't need these things, and sometimes your brain may not turn so fast, and when you encounter a problem that needs to be turned, you really have to think about it.

"Who did you learn this from?" The teacher looked at the question on the blackboard and asked Zhou Tiantian in surprise.

"My brother, my brother helped me with a lot of similar questions before." Zhou Tiantian didn't hide it, so she told Chang Yanzhe about her question.

She didn't mean to show anything, but she was mainly anxious for her classmates.

If they work hard to practice, they will all be dumbfounded and will not do anything when it comes to the game, and it will be too big a blow to everyone.

It's all children, what if they are hit too hard and lose confidence in learning?

Several of them were her classmates, and they had a good relationship, and she didn't want that to happen.

The teacher looked at Zhou Tiantian, was silent for a while, and suddenly turned around and left without saying anything.

The students left in the room were at a loss and didn't know what was going on, Zhou Tiantian was also stunned, didn't understand what the teacher was doing, didn't he want to give them a lecture? How did you get there?

"Tiantian, you're coming back soon, oops, you're in trouble." Feng Rongrong saw that Zhou Tiantian was still standing there, and hurriedly beckoned to her and asked her to hurry back to her seat.

"Trouble? What's the trouble? I'm telling the truth. Zhou Tiantian slowly returned to his seat.

"You just say, this cow eating grass question, can you do it now? If there is such a question in the competition, what will you do? ”

Zhou Tiantian didn't feel that she was wrong, she was for everyone's good.

Well, maybe she was a little too straight to speak just now, which hurt the teacher's self-esteem, but the teachers are adults, so this little thing will not hold a grudge.

Zhou Tiantian didn't feel that she had done anything wrong at all, anyway, she just felt that the question was too simple and it was useless to practice.

Feng Rongrong and a few people glanced at the question on the blackboard, their heads shook like a rattle, they didn't understand the question at all, and they didn't even have the idea to solve the problem, how to do it?

"Tiantian, can you make it?"

Feng Rongrong looked at Zhou Tiantian timidly, I really didn't expect Zhou Tiantian to be so powerful, it seems that the teacher is a little confused, is this question true? Are you sure you have an answer?

"Yes, Mr. Zhou, can you tell us about the question just now? Why don't I understand at all? The classmates next to him also came over and asked nonsense.

Zhou Tiantian saw that she couldn't talk like this, so she simply returned to the podium and explained the question to the students step by step on the blackboard.

"The difficulty with this kind of cow grazing problem is that the grass grows every day and the amount of grass is constantly changing.

The key to solving this kind of problem is to find a way to find the constant amount from the variables, that is, the amount of grass in the original pasture, and the amount of grass growth per day.

Once these two are identified, this kind of problem can be easily solved. Zhou Tiantian said as she wrote on the blackboard.

In fact, if this kind of problem is in junior high school, it can be solved with equations, but they are fourth-grade students, and they have not yet learned equations, so they can only make a few more turns.

Zhou Tiantian spoke patiently and meticulously on the stage, and the students below stretched out their ears one by one to listen with relish.

And at this time, outside the door of the activity room, the principal and the director were standing quietly and listening.

"Yesterday, when I was taking the selection exam, I looked at this baby twice, and the questions were done quickly and well, but I didn't expect this baby to be more powerful.

Listen, let her talk about this question, it is clear and easy to understand, this child is really good. The principal nodded with a smile and praised Zhou Tiantian several times.

"She just told you that her brother gave her the question? Her brother is amazing. ”

The director over there looked at the figure who was lecturing in the room, and said thoughtfully, "Principal, can we find the girl's brother and help with some questions and practice for the children?" ”