Chen Mu certainly did not intend to start teaching chemistry and physics all at once.
That's for later.
What we have to do now is just to plant a scientific seed.
If you can unify the world before the age of forty and build a steam engine before the age of eighty, you will laugh out loud.
After all, Chen Mu only knew a little bit about the theory of steam engines, but he didn't know anything about how to make them. It would be unrealistic for him to carry out the industrial revolution with his bare hands.
Starting from the 15th century in Europe, countless outstanding talents developed and developed for more than two hundred years to accomplish something. How could he do it?
So what he wants to do is not to climb some technological tree, but to really teach mathematics.
After teaching addition, subtraction, multiplication and division to the children in the morning, I taught the same content to the large class in the afternoon. First, I had to popularize Arabic numerals to the children.
The significance of Arabic numerals to mathematics is known to the whole world. As long as cultural knowledge is passed on, then one hundred or two hundred years later, there will always be geniuses who can use mathematics to drive other subjects.
According to Chen Mu's lesson preparation, basic Arabic numerals will be taught in the first few lessons, and then multiplication tables will be taught.
In fact, there were multiplication formulas during the Pre-Qin and Warring States periods, and they were recorded in Xunzi, Warring States Policy, and Huainanzi, but these formulas were very scattered and not complete.
Moreover, the contents of the formulas at that time were also different, and the order recorded in different books was also different. They were messy and no one organized them in a unified way.
What Chen Mu wants to do is to systematize the multiplication tables, organize them and then teach them to students.
This course lasted only half a month.
Some people may say, aren’t all students child prodigies? Why does it take so long to memorize the multiplication table?
However, do you still remember the learning content of the entire six years of primary school?
For six years, I have been learning addition, subtraction, multiplication and division. Positive and negative numbers and quadratic equations are the first knowledge in junior high school. You can know that teaching primary school students to read is not easy.
When children are young, they tend to forget things easily. What they teach today will be forgotten tomorrow.
Although there are some top students like Zhuge Liang, Chen Qun, Lu Yi and Cui Lin, the level of other students is uneven, so it is not easy to unify the teaching progress.
Regardless of whether it is ancient or modern, in a large class teaching like this, it is not surprising that there are good students and bad students, and there are excellent students and poor students.
For example, Zheng Xuan had thousands of disciples under his command, but the truly outstanding ones were actually only a few.
"Today I would like to introduce a new classmate to you."
Chen Mu walked into the classroom, followed by a pretty girl. The students looked at her curiously.
The girl held her brother's hand tightly and looked timidly at the group of peers.
"This is my sister Chen Feng. She is eight years old this year. She is a little older than you, Feng? You can sit next to Chen Shao."
Chen Mu pointed to the last empty seat. With four people in each row, there were exactly twelve people in three rows.
Chen Feng walked over, looking back three times, and sat down on her knees with great restraint.
Fortunately, my eldest brother is here? I don’t feel scared at all.
Just arrived in a strange environment and haven’t become familiar with it yet? I always feel uncomfortable.
Watching Chen Feng sit down, Chen Mu began to say: "Although Feng is a little older than you, she has never read a book before? If she doesn't understand something in the future, everyone should still help her, you know?"
"knew."
Everyone answered in unison.
The reason why Chen Feng was taken over to study was of course the convenience given by the dean, Chen Mu.
Did he study Hongdu School first? Then he became a disciple of a great Confucian? Nowadays, his knowledge cannot be said to be particularly profound, but his level is not bad. It should not be a big problem to be among famous people. Naturally, he cannot let his family still be illiterate.
Chen Zhi is fourteen years old this year. Logically speaking, he has passed the admission age of Taishan Academy. But his foundation is too poor to go to Taishan Academy. He can only go to the big class to study with the primary school students.
Chen Feng is eight years old this year and has been studying in the small class for just one year. She will be promoted to the senior class next year.
In the Han Dynasty, although the status of women could not be said to be high, it was never to the point where a woman's lack of talent was a virtue.
The four most talented women of the Han Dynasty? Ban Jieyu? Zhuo Wenjun, Ban Zhao, and Cai Wenji are all famous figures throughout the ages. Even in the Jin Dynasty, there was also Xie Daoyun.
"Okay, we won't have math class today. I'll take you out to learn some natural knowledge."
Chen Mu clapped his hands: "Everyone, get up and follow me outside."
The students got up obediently and followed him out.
What was the content of nature classes when you were a child?
It's nothing more than giving everyone a magnifying glass and taking everyone around the school's flower beds to look at bugs and leaves.
Chen Mu remembers that he had a bad hobby when he was a child, which was to burn ants with a magnifying glass.
Although he looks a bit like a perverted murderer, luckily he doesn't set fires and hasn't wet the bed since he was three years old.
The students, each with their little arms and legs, followed Chen Mu to the grass outside under the supervision of the maids and slaves of the academy.
The plains in the distance are lush and green. Millet and wheat were planted in the Han Dynasty. Wheat was planted in winter and harvested in spring. Millet was planted in spring and harvested in autumn.
Now is the growing season of millet. The gentle spring breeze is blowing, and the ears of millet are swaying in the wind, bringing a refreshing feeling.
"What I want to teach you today is not the knowledge in books, but the great road of heaven and earth."
Chen Mu called everyone over and sat on the grass.
"Master, what is the Great Way of Heaven and Earth?"
The thin Lu Yi looked confused.
He is the youngest, only four years old. Although he also shows intelligence, his learning progress is similar to that of seven-year-old Chen Shao.
But after all, I was young and didn’t understand at all such words that contained a hint of philosophy.
"The great road of heaven and earth is the law of natural operation."
Chen Mu closed his eyes and said, "Everyone close your eyes and take a closer look. What can you feel?"
"The wind is blowing my hair."
Kong Jian said.
"The sun shines on my face, making it warm."
Chen Zhong said.
"I feel very peaceful inside."
This is Zhuge Liang's answer.
"Quietness is right, and so are wind and sunshine."
Chen Mu said with a smile: "Then you should calm down and start thinking about some problems. What problems can you think of?"
Kong Jian said: "Why is there wind in the world?"
"Mencius said: Qi is the most powerful and strong. If it is maintained upright and harmless, it will be blocked between heaven and earth. Is this wind the awe-inspiring Qi between heaven and earth mentioned by Mencius?"
Chen Shao's grandfather was Chen Shi, one of the "Four Leaders of Yingchuan". His family was knowledgeable and he came up with fantastic ideas.
"The awe-inspiring righteousness mentioned by Mencius is the standard of benevolence and righteousness in the minds of scholars. It is courage, belief, and will, but it is not wind."
Chen Mu denied Chen Shao's statement.
Zhuge Liang asked: "Master, do you know where the wind comes from?"
Chen Mu nodded: "I know, but I won't tell you. If you are curious about something, you might as well go find it yourself. If you know the answer in advance, you will lose your heart to study."
The reason why we deny that the aura of greatness is wind is because there is already an answer and explanation in Confucianism. If we do not deny this, it will lead students to go astray and make them really think that the aura of greatness is wind, which is telling them
Wrong direction.
In the profession of teacher, it is definitely not good to tell students the answers directly and directly. But it is not that easy to be a good teacher who guides students and makes students interested. First of all, you must not let them go wrong.
When they heard that Chen Mu knew where the wind in the world came from, the students were very curious and pestered Chen Mu one by one to get his answer.
But Chen Mu did not tell them, he just smiled and said: "Okay, if you can delve into some theories about how the wind comes from, then I will tell you all the answers. The next question, besides the wind, what else do you think of?
What?"
Chen Zhong said: "Master, I want to know why there are sun and moon in this world."
"good question."
Chen Mu thought that this boy was suitable to be an astronomer.
Do you still remember how you learned about astronomy when you were a child?
This is thanks to a cartoon, "Three Thousand Questions of Naughty Blue Cat".
Including the origin of the universe and the origin of dinosaurs, educational cartoons like this are very helpful for children to popularize science.
It's a pity that Chen Mu can't explain the big bang to them now, nor can he explain the earth, moon, and sun.
After all, the flat earth theory is now deeply rooted in the hearts of the people. The round earth theory is now proposed. Firstly, it cannot be proved. Secondly, it has no influence and it is difficult to gain supporters.
There were very few literary inquisitions in the Han Dynasty, only one or two in total, and they were all caused by scolding the emperor.
Disputes between great Confucian scholars also occasionally occurred. For example, Zheng Xuan had a debate with another great Confucian scholar, He Xiu, but it did not reach the point of everlasting disputes.
Therefore, as long as Chen Mu does not criticize the emperor, no matter what academic theory he puts forward, his life will definitely not be in danger.
But the problem is that he has to prove his theory. Unless he invents an astronomical telescope now, no one will believe him.
Therefore, upon hearing Chen Zhong's question, Chen Mu could only shake his head and said, "Although this is a good question, I can't answer it."
Chen Zhong asked: "Master, don't you know?"
"Master knows."
"Then why can't it be answered?"
"Because no one will believe what the master says."
"I believe."
Zhuge Liang raised his head, his big watery eyes flashing.
Chen Mu laughed and touched his head: "It's useless for you to believe, you have to prove it. Master can only prove the wind in the world, but not the sun and the moon. You will have to work hard in the future."
In fact, there is no way to prove it. For example, use three balls to prove the relationship between the sun, the moon and the earth, and prove day and night through rotation and revolution.
However, this method of proof is still too far-fetched for people today, and there are probably very few people who believe it, so let’s talk about it later.
Chen Mu stood up from the grass, patted his butt, knocked down the grass clippings, stretched and said, "Today is a good day. I will take you to the fields and teach you some practical knowledge."
Everyone got up and Huang Qi asked: "Master, what knowledge do you have?"
"Farming."
"Farming?"
The students looked at each other, confused.
Among the children, Zhuge Liang, who had the worst background, was from a county-level family. He did not have to worry about food and drink in his life, and of course he had no idea about farmland.
Chen Mu smiled and said: "Food is the most important thing for the people. You must have a clear understanding of where every grain of food in your mouth comes from and how it enters your body. If you don't know it now, you must learn it in the future.
Just think of it as an early experience.”
"I have seen Ye Ye going to the fields. Ye Ye said that millet grows in the fields."
Although Chen Shao's father, Chen Qia, was a landlord in Yingchuan, he also worked in the fields himself. Chen Shao still had this impression.
Chen Mu smiled and nodded in approval.
Just like the Confucian scholars of the Han Dynasty were all tough guys who carried swords to kill people, the rich and intellectuals of the Han Dynasty were not useless people who were industrious and could not distinguish between grain and grain.
Even if they come from a wealthy family and didn't work when they were young, they still have to study when they grow up.
The emperor of the Han Dynasty also had to go to the ground in person, not to mention the scholars and the common people?
The group came to the edge of the field. There were farmers busy in the field. Although the millet seedlings were planted, millet was more tender than rice. After planting, it had to be taken care of frequently without any slack.
The farmers were carrying dung while they were applying fertilizer. From a distance, the wind was blowing the waves of millet. Only when they got to the fields did they realize that there was no fragrant smell of millet and grain. It was all stinking of dung.
But there is no way. Manure was the most important field fertilizer in ancient times. Millet seedlings most needed manure for top dressing during their growth period, but they did not have much need for water.
Why are the fields in the swamps around the lake the best and so sought after?
Because the lakeside and swamplands are suitable for raising chickens and ducks, and there are a large number of animals inhabiting them, the feces of flowers, birds, fish and insects make the fields near the lake the most fertile, so there is almost no need for top dressing.
The students all made grimaces, covered their mouths and noses, and looked very uncomfortable.
On the contrary, Chen Feng, who was now wearing a red silk coat, did not feel any discomfort at all, and looked relaxed and at ease.
"My lord."
Chen Mu led the students towards an old man carrying dung.
The old man quickly put down the dung bucket and saluted: "Prefect."
Nowadays, Chen Mu has a high prestige in the Qi State. He has put down the powerful thieves and seized power. Everyone from officials to traders and pawns knows about him.
"Today I am going to teach students how to work in the fields. Can the boss teach me?"
Chen Mu asked.
In fact, he has never been to the earth. He fell ill when he crossed over. After recovering, his body became much weaker.
According to his younger brother Chen Zhi, he was originally a good helper to his parents. He started working in the fields with his parents at the age of seven. He was skilled in farming and became the mainstay of the family.
After traveling through time, since he did not inherit the memory of his original body owner, he could only excuse himself by saying that he had forgotten many things, so he turned to recuperate and borrowed books from the clan elders in the village.
So I really don’t know how to farm now.
The old man hurriedly said: "The governor is old and decrepit. The students of the governor are all wealthy people. How can they go to the fields to do farm work?"
Chen Mu smiled and said: "Farming is the foundation of the country. If you don't even know farming, how can you read well? Don't refuse, just teach them some simple knowledge."
"This...Yi."
The old man could only respond. While rolling up his sleeves and carrying the dung bucket to the edge of the field, he said to everyone: "Millet is usually sown from spring to mid-summer, but before that, because the fertility of the field is not enough, it must be added to the field.
Fertilizer. Especially in February between Jixia and Mengqiu, it is the best time to topdress fertilizer, because it will be ripe by the Mid-Autumn Festival, and if there is no increase in fertilizer, the yield will be less."
The students seemed to understand but not understand.
"Just like people need to eat to grow, millet seedlings also need to absorb the soil's strength to grow."
Chen Mu said earnestly and seductively: "Where does human food come from? We grow the land. So where does the fertility of the underground soil come from? It is cultivated by feces, so don't dislike the dirty feces.
The food we eat is produced by stimulating the growth of millet seedlings through residual substances in feces."
Watching the students slowly understand, Chen Mu was actually thinking that it is a pity that chemical fertilizers require light industry level to synthesize. Otherwise, if there were chemical fertilizers, the world hegemony would probably be completed within a few years.
After all, the reason why there was great chaos in the late Han Dynasty was because of the shortage of food caused by natural and man-made disasters.
If Qingzhou's grain output can be increased, it can attract a large population. If Qingzhou has 10 million people, then conquering the north and unifying the world will no longer be a dream.