Qiu Yucheng, who was walking outside Class 6 of Grade 3 and Director He secretly looked inside from the window of Class 6's classroom.

This is the first time Ning Yunxi has taught at No. 4 Middle School. What is the effect? ​​It used to be heard that most of them have heard of. They have never seen any scenes in Ning Yunxi's class. Maybe it's a shame? But no matter what, it is obvious that people have taught so many excellent students. It is obvious to all, and there is no cheating.

Seeing the laughter and laughter in the classroom of Class 6 of Grade 3 and 6, both of them wondered. Everyone knows how boring math is, how can students keep laughing?

It seems impossible to say that Chinese can make students laugh, because Chinese can tell jokes.

Director He couldn't help it anymore and stood under the window and pricked his ears to listen.

"What's wrong?" Qiu Yucheng asked, standing behind him.

Director He was surprised: "They are all discussing why mathematics is annoying?"

Qiu Yucheng's too surprised light flashed in his eyes: "Let me listen."

A male classmate said aloud: "The most annoying thing about mathematics is to circle it. My head is dizzy when I go around. For example, in a geometric problem, we often make auxiliary lines, move around and around. Do you think it's not like the yarn balls knitted by my mother?"

The students below laughed and applauded loudly, all responding to the difficulties raised by the student.

Mathematics is really a tangle, and it is a brain-burning thing. It is necessary to create so many strange geometric figures and use auxiliary lines to circle them. This makes geometric figure problems a disaster for some students.

Teacher Ning heard the "Yeah" twice: "This student's statement is very interesting, but I feel that he didn't mention the key points. Because he thinks that geometric problems that need assistive lines solve are things that are not needed for some people."

Some students were upset: "Don't need an auxiliary line?" Some students were silent.

Auxiliary line, unless necessary, otherwise it is called auxiliary line.

Director He and Qiu Yucheng also know this. For people with a very keen sense of three-dimensional space, they directly compress and synthesize and flip the various surfaces of geometry into a flip in their minds, and they know that they don’t need to make auxiliary lines at all. Of course, this is all created by mathematical geniuses.

So, the classmate who asked the question complained: "Teacher, don't mention me and the genius, I'm not a genius."

"But you have to know that mathematics is a subject created by geniuses. Any subject in the world is the same. It is created by people from the intellectual group. These people believe that in order to let people all over the world understand science and understand the world, they have set a step by step ladder to get closer to science and the wonder of the world. So with the emergence of auxiliary lines, they have taken great pains to make you understand it as a circumcision and a brain-burning thing. Don't you feel a little sorry for them?"

"I--"

"You can't retreat because of the difficulty and say that the ladder is a circumference. People are walking out of the way down to earth. When these people are thinking of creating these ladders, they are also practicing these ladders to see if they are correct. They can clearly reach the sky in one step, but they have to do these thankless things, which is in line with an old saying by our great philosopher Confucius: It is better to have fun than to have fun alone. Letting more people get close to the world of science is equivalent to loving our own life. Our own body, our spirit, and discipline are inseparable from the subject, and mathematics is also reflected in our own wonderful bodies."
Chapter completed!