Of course, as we all know, after all, this is a world without a financial market. It is impossible to mess with a big family through various means in a short period of time. Therefore, the main purpose of Gao Li telling Nonoka about this is to remind Nonoka.

Now the focus of Gao Li's entire work is still on the education issue in Lizhuang. From now on, it has become a luxury to return to the former world.

Since we want to live a good life in this world forever, it is absolutely not enough to rely on the little knowledge he has now from another world.

A century-old plan is based on education, and any scientific research starts from basic disciplines.

As the saying goes, if you learn mathematics, physics and chemistry well, you will not be afraid of traveling all over the world. In a world where natural science is very scarce, Gao Li intends to use numbers to re-arm the minds of these children. Perhaps he will not see any profit in a short period of time. But who can guarantee that one or two top scientists will not be born among these children?

Now Lizhuang has Xiu'er and Chu Miaoyi. These two girls are smart, but they have one of the biggest shortcomings, that is, they lack quantitative thinking. All experiments use exhaustive methods, a little more or less, and there is no specific concept.

This won't work.

Therefore, Professor Gao Liyao’s subject must be included in Xiuer and Chu Miaoyi.

Lizhuang Primary School only lasts half a day. I learn Chinese today and learn arithmetic tomorrow. The world itself also has a subject of arithmetic, but my mastery of mathematical laws is not as profound as Gao Li, and I often make some very simple truths very complicated.

Now, it’s time to inject the beauty of mathematics into this world!

On the first day, Ling Long taught Chinese class, and Gao Li was listening.

I have to say that listening to Ling Long's lectures is really a pleasure. Many awkward content can often be told in combination with various short stories. Time passes rapidly in her pleasant words. Before I know it, the morning passed by, and the children were fascinated by listening and were reluctant to leave for a long time.

Gao Li couldn't help but sigh that when he was in school, the classroom would inevitably be completely cleared within two minutes at the moment of school. It was not like the children now tangled around Ling Long, and their eyes were full of desire for knowledge. This made Gao Li look forward to tomorrow's course.

However.

He was thinking too much.

Facts have proved that Ling Long is Ling Long and Gao Li is Gao Li. Ling Long is popular as a teacher, and that is her personal charm, and Gao Li can't learn it.

Especially mathematics.

The first thing is to let these children learn to recognize Arabic numerals.

The common language of this world is Chinese, but there is a unique counting system for numbers. This system is similar to Arabic numerals and is completely different. If it is replaced with the system of this world, it will lead to problems in the future formulas. Therefore, Arabic numerals must be learned first.

This is no problem for those children who have never been to school or even know how to write. Instead, Xiu'er and Chu Miaoyi are displeased. After all, in their opinion, learning new techniques is meaningless.

Gao Li's solution to this is very simple. He just threw out a multiplication and division of more than 5 digits, and the two girls were stunned.

"I have an abacus!" Xiu'er said unyieldingly. She took out the abacus and fiddled it in a series of ways, and then quickly came to the conclusion.

It is undeniable that abacus is really a good thing. It has the speed that is no less than that of a calculator when performing complex four-character operations.

But the problem is that abacus is just a calculation tool, and this thing can only play an auxiliary calculation effect.

"Prefer a chestnut." Gao Li smiled.

Gao Li drew a cross coordinate on the ground, then drew an arc from the origin, and then cut off an area in the middle.

"A child asked me, this is his land. This line has three miles and this line has four miles. This arc is part of a standard circle with a radius of ten miles. Now tell me how many acres of land is his home?" Gao Li asked with a smile.

This time it was not just Xiu'er, but the whole school was stunned. How to calculate this? It is neither horizontal nor vertical, how to calculate it?

"Look, we can cut this place into countless small thin strips and bring it in with a simple formula to get the area. And this process of solving it is called calculus." Gao Li said.

"Feed chicken manure?" Xiu'er said silently.

"Calculus!" Gao Li rewritten three big words with a gypsum pen on the blackboard.

"What is the purpose of feeding chicken manure? Is it just for land calculation?" said a child.

"This thing has many uses, but you don't need to know that much now. You just need to remember that what I taught you is a brand new way of calculation." Gao Li said.

"Owner..." a spider demon child said weakly.

"What?"

"We haven't learned it before, so it's not new..." The spider demon child continued to say weakly.

"What you said makes sense. In short, the homework you went back today is to master the reading and writing of these ten numbers and replace them with your usual reading and writing. Do you understand?"

"Boss, I feel this is very interesting. When will we learn calculus?" said a chubby bull demon child.

I just knew! I just knew that there must be one or two of these kids who liked it!

"It's still early for you to learn calculus! When you master the calculation of numbers, what will be waiting for you will be a bunch of formulas. In the future, there will be good friends such as Gauss, Fourier, Fermat, etc. waiting for you! As long as you don't complain then," Gao Li said with a smile.

"No! I feel this is so fun! And I feel like I can understand it!" said the chubby bull demon child.

"Oh? Not bad! What's your name, classmate?" Gao Li asked.

"My mother said I knew how to eat it, and it turned into a wooden dungeon, so my mother always called me Niu Duner." said the little Niu Niu Niu.

So, do you also like to squat under an apple tree?

"Very good! Niu Dun, if you are really interested, you can come to me at any time. The same is true for other students. If any student is interested in any knowledge I teach, you can come to me at any time. I will teach you all the knowledge I know! Now, let's continue to class!"

Compared to literary education that everyone can understand, the biggest problem with mathematics is abstraction. In fact, it’s not bad now, mathematics is still concrete, and every number can correspond to an object. Once it really enters the category of functions, things will immediately become abstract and boring.
Chapter completed!