I saw Wang Yang writing "1 tree" in the series "One person, one tree" on the ground.

‘1tree’ is equal to one tree.

Then he wrote a '2 tree' on the "2" series, and also equated the two trees with this.

Then draw ‘3 trees’, ‘4 trees’ and ‘5 trees’ like this.

Write them all from 1 to 9, and put an equal sign on them all.

"These things are equal to those things, do you understand?" Wang Yang pointed to the numbers here, and then pointed to each of the drawn trees to explain.

Everyone looked at it, and one person stood up and asked: "There are two trees here, why are there only '2 trees' here? Don't we have to draw another tree?"

Listening to the man's description, Wang Yang couldn't help but think of Mr. Lu Xun's famous saying: "There are two trees in my house, one is a jujube tree, and the other is also a jujube tree."

Shaking his head to drive away the distracting thoughts, he looked at the man, and at the same time looked at the other people behind him who were also puzzled, and said: "You don't need to worry about it, you just need to use it this way."

Everyone nodded in understanding.

This is the advantage of having a writing system. Wang Yang can just tell them how to do it without having to explain it to them. The more they use it, the more they will understand it naturally.

"Now, write out other things by adding numbers." Wang Yang pointed to other pictures.

Everyone stopped talking and started writing.

He wrote '1 person', then drew a person, and then equated the two, and asked Wang Yang if this was the case.

Wang Yang nodded and explained again. This '1 person' is equal to one person.

The man didn't know whether he understood it or not. He frowned and thought deeply for a moment before continuing to draw.

Wang Yang went to see other people. He found that many people had already drawn a person, then added an equal sign, and finally wrote "1 person".

It's a bit like a fill-in-the-blank question, one person equals one person.

Unfortunately, there are also some people who made mistakes. They wrote '2', '3', '4', and so on.

No need to think about it, these people wrote it wrong.

"You wrote it wrong. It should be '1 person'." Wang Yang shook his head at them and helped them change their answer.

They were a little confused.

"Okay, now comes the fill-in-the-blank question for two people."

After everyone finished writing, Wang Yang went up to take a look and found that another small piece was wrong this time. Originally, it was nothing, but he finally made a large number of people understand that the small piece was really incomprehensible.

But Wang Yang discovered that the small group of people who were wrong this time were different from the small group of people who were wrong last time. In other words, a small group of people who were right last time were wrong this time.

"It seems that those who were right last time have a lot of clues. Many people are still the same. They only understand that 12345 is different. But they don't understand that these are numbers and the reason why they were right. I guess they are wrong."

Wang Yang had no choice but to correct them one by one. They were confused and did not understand where they were wrong.

Point to the number and ask Wang Yang, but Wang Yang can't answer it. You ask him why 1 is 1, what is the problem? 1 is originally 1, how can it be explained?

For example, there is no explanation for why you are who you are...

"You all do all this again." Wang Yang wanted to see who was right and who really understood.

Everyone wrote in a hurry, and it didn't take long for them to be finished. Wang Yang didn't waste any time, and looked over one by one, pointing fingers among everyone.

"All the people I just ordered, come out." Wang Yang put his hands behind his back and walked in front of everyone.

There was a stir in the crowd, and after a while, a small group of people walked out and came behind Wang Yang.

"Only a quarter of the people understand." Wang Yang raised his eyebrows slightly, turned his head with a smile, and asked the group of people behind him who understood.

"How do you know?"

Everyone pointed to different numbers of people and trees in different pictures, indicating different numbers.

"Not bad." Wang Yang smiled slightly, then turned to the front,

I went to the group of people who didn't understand yet, drew a lot of pictures and gave examples, explained it, and then let them see it.

It lasts for several days at a glance. Every day, there are some people who think about it from the large number of examples. Some of them may be able to understand it, and some of them just remember it by force.

But no matter what method he uses, it doesn't matter. After a few days, everyone can understand it, and Wang Yang has completed the basics of numbers, the understanding of 1 to 9.

In the next month, Wang Yang kept asking them to do fill-in-the-blank questions in different ways.

For example, he would draw a few chickens or a few cows at random, and then ask someone to answer the question, and everyone would be able to write correctly.

Whether you understand it or not, it’s just nine numbers, so it’s very easy to forcefully remember them.

Then he started to ask more test questions, multiple-choice questions. This kind of questions is very interesting, just like gambling. Everyone seems to know the other party's banker's time and continue to make money from the gamblers.

In order to promote mathematics as quickly as possible, he enriched the content of the competition again and asked everyone to describe an event in the shortest time.

Everyone discovered that after adding numbers, there was no need to draw so many scenes.

Under Wang Yang's deliberate training, everyone's understanding of numbers finally reached a comprehensive level, which was not easy.

"Today, I will teach you how to learn numbers above ten." Wang Yang smiled slightly.

Once the foundation is laid well, the teaching speed will be much faster. When people learn numbers above ten, there will be no obstacles at all and they can be easily mastered.

Seeing everyone's attitude of using numbers when they had time, Wang Yang felt very happy. Their efforts and seriousness were not matched by people of later generations.

Because in their view, numbers have affected the game, and the game is an indispensable and important part of primitive life lacking entertainment.

If people don’t want to be inferior to others, they must learn to use simpler and more convenient numbers.

"Today, I'm going to teach you how to add." Wang Yang smiled.

Two months later: "Today I will teach you how to subtract."

Two months later: "Today I will teach you multiplication and division..."

Under Wang Yang's intentional guidance, everyone had a strong foundation in mathematics without realizing it. They learned the subsequent courses very quickly. However, since there were no winter or summer vacations, this helped everyone save valuable time.

Using this time, Wang Yang teaches mathematics every day, all the time, and all the time to help everyone lay a solid foundation.

They learn primary school courses faster and faster, and sometimes they don’t even need to teach them.

Undoubtedly, this is what Wang Yang hopes to see very much, the dawn of civilization!

A year has passed, and Wang Yang has not engaged in other things. He has been teaching everyone to learn mathematics, and will continue teaching after the harvest is completed.

He promoted those mathematical tools and let them use them.

As soon as these things came out, everyone loved them so much that the people who managed the warehouse had the ability to count huge quantities of materials.

The woodware produced by Zhang San and others is of better quality, and the promotion of rulers and length units makes it extremely easy for them to plan wood, once again saving time and costs.

Issues represented by pi, capacity, etc. were also applied by Wang Yang to the life of the tribe.

For example, in a large tank containing grain, there will be a capacity mark on the outside of the tank, and a milliliter scale on the inside. If it is not full, it will be calculated according to the scale inside the tank.

When it is full, it is calculated directly according to the capacity engraved on the large tank.

With the development of mathematics, everything about the tribe has changed a lot, and many things were unimaginable before.

They can now test their own efficiency, how much food they have stored, what they can eat like crazy, and what they can't eat like crazy.

He is very happy. The tribe is constantly getting better. He believes that it can become better. He is planning these junior high school courses in physics, chemistry, and biology.

But there was so much content that it was simply not enough to engrave it on clay tablets. Wang Yang was also unambiguous and took advantage of everyone's ability to master it, cutting down trees and researching the manufacture of paper.

Xiaohong visited him several times and saw that he was stunned. She couldn't say anything, so she could only silently help him deliver food, ask him what he liked to eat, what he did every day, and personally take care of his daily life and diet.

Ensure that he can focus on his own things every day and no longer need to be distracted by trivial matters.

She understood that all the tools were made by Wang Yang, and he also spread this knowledge, which not only brought everyone into the new world, but also brought food to the tribe, which was extremely amazing.

However, Wang Yang always ignored her, and she was depressed every day. When she had nothing to do, she would sit quietly aside and stare at him blankly with her head propped up.

Sometimes I feel really depressed about being ignored, so I push his shoulders and say that I washed his pants yesterday and found some stains.

Wang Yang glared at her and said seriously, he hasn't worn anything these days, where did he get the pants?

Xiaohong thought about it and realized that she was washing animal skin sheets.

Wang Yang glared again, "I am such an old man, how can I still wet the bed? This is pure slander!"

But suddenly, he thought of something, his face turned red, and he had to change the subject: "The animal skin has not been damaged by washing?"

There were not many jokes like this. Xiaohong really wanted him to talk more, and she was also happy to see him look embarrassed. It would be best if he suppressed his blushes, as that would look funny.

Unfortunately, most of the time, Xiaohong's interruption would only result in Wang Yang's angry glare. Xiaohong was so angry that she ran to the wheat field to play with Wang Yingying.

Wang Yang also felt that it was not good to do this, but he really didn't have much time. After seeing the dawn of civilization, he was possessed and had no intention of joking anymore, and he didn't even want to sleep.

I go to bed very late at night and get up very early in the morning, my hair is disheveled and messy. Sometimes I don't take a shower for several days, just carving clay tablets and catching up on classes.

He was afraid that the more time he wasted, the more knowledge in the book he would forget.

In fact, he has forgotten a lot. Just chemistry and physics, he is a bit intermittent and feels that there is no connection between the two texts.

He had no choice but to think of writing one article after another, struggling with his own brain cells.
Chapter completed!