Teaching math is much simpler.

At that time, when I was in the Shen Mansion, I taught children equivalent to kindergartens, and now I am facing adults from the elite class of the Ming Dynasty, and it is no exaggeration to say that these people are at least equivalent to those college students in later generations.

Therefore, the teaching methods need to change, and the speed and amount of knowledge imparted will naturally change.

Or nine Arabic numerals from 0 to 9, Su Baiyi roughly said the meaning of each character, then from 11 to 20, and then listed some relatively large three-digit and four-digit numbers.

At the very least, let the students grasp the meaning of numbers and how they are arranged and combined.

"From right to left, one, ten, hundred, thousand, thousand, everyone can remember it, I won't go into details, let's start teaching you addition and subtraction by hand!"

They are all high-IQ people, and the most basic ones, ten, hundred, thousand, and ten thousand have almost not taken much time to master them all, as for the addition and subtraction of manual arithmetic, it is a little difficult, and it is a column and vertical type.

Arrange the vertical type, start from the single digit to add and subtract a single number, and after it is greater than ten, it will go up by one place, and the calculation of this addition is very simple.

As for subtraction, the same as addition, what is more difficult to understand is the subtraction of borrowing positions, and the artifact that later generations of elementary school dogs can quickly grasp is naturally not a problem in the hands of these high-quality and high-intelligence businessmen in the Ming Dynasty.

The knowledge learned in primary school in later generations is nothing more than the addition, subtraction, multiplication and division of integers, followed by the addition, subtraction, multiplication and division of the number of words with decimal points, and some of the most basic concepts such as common divisors and common multiples.

Su Baiyi plans to teach all the primary school courses in a month. After a month, he began to teach concepts such as lower functions, equations, and elementary geometry.

The first class was spent in a slightly stressful but exciting state.

After class, Xin Shuanzi told Su Baiyi with a smile that he spoke well; Wang Shouxin glanced at him meaningfully, there was no encouragement or blow, anyway, it was that kind of helpless look. Su Baiyi estimated that this guy must still have a trace of regret in his heart.

It's nothing just to preach and talk about it, he has come up with a scientific way, which is naturally unacceptable to the older generation of antique-level figures, and even Yuan Keli does not agree with all of them.

But whether Yuan Keli agrees with it or not, he has to support it, after all, as a beneficiary in Su Baiyi's ability, at least he must protect his life-saving benefactor.

When Yuan Keli left, he didn't say anything, just smiled and nodded at him.

Contrary to these bigwigs, the reaction from the students was the most violent.

"Mr. Su, this column-vertical calculation you taught is really too convenient."

"yes, the notation of this number is also very good."

"Mr. Su, is the earth under our feet really round? I'm kind of convinced now. ”

"yes, I think what the gentleman said makes sense."

Fu Lin stood at the back, and did not run over to ask questions around Su Baiyi like other students. His good friend Chu Lun said: "What are you in a daze, Mr. Su's way of natural science, can you understand?" ”

"Hmm......" Fu Lin nodded, his eyes full of psychedelic colors: "I really envy that Westerner surnamed Mai, and I also want to be like him, get a boat to sail the sea." ”

"That's right, didn't Mr. Su say it, he can make a big ship without sails and wind, and when he gets it, you buy one, and then you can sail the sea." Chu Lun said a little casually.

"Hmm." Fu Lin nodded, his eyes suddenly shone with a strange brilliance, and said in an affirmative tone: "I believe in him, one day, we will see that kind of big ship." ”

"Huh?" Chu Lun was stunned: "You really believe it, how is this possible?" ”

……

Except for the class, Su Baiyi was about to laugh like crazy.

Teaching a class is really rewarding!

The value of peach and plum in the system has risen gradually, and this time it has increased by four or five hundred.

Thinking about the fact that the total number of students is only about 200, how can there be four or five hundred peach and plum values?

Could it be that there are also people among them who have a greater influence on the surrounding people?

However, this is not important, and it is not the point, the point is that as long as the peach and plum value is there, you can continue to buy books and pack thirteen.

Well, just this one, let's buy a copy of "Plastic Greenhouse Planting Technology" first.

The plastic greenhouse in Wu Degui's house has also been built.

Walking south along Binhu Road from the academy, it is not far from Tongji Hall, and the distance is not even more than a mile, because it is close, so Su Baiyi does not live in the college with his wife and children like Xin Zhuanzi. Although Wang Shouxin said that he would give him a separate courtyard.

Because it was summer, the sun had just set after the class, and it wasn't completely dark. Su Baiyi walked to Tongji Hall, and didn't see Yue Ran at first sight, but saw two second-class goods.

Yang Juan and Ye Pingzhi.

Yang Juan was sitting lazily on the stool, Ye Pingzhi was fine, leaning his face in, Su Baiyi took a closer look, okay, this guy was injured again, and the blood on his face was as if he had been scratched by something, and the guy downstairs and the little medicine boy Magpie were disinfecting him.

Su Baiyi is also drunk!

Since the first time he saw this goods, it seems that the injuries on his body have not been broken, either by others, or by his son Ye Tinggui, sometimes Su Baiyi feels that this Ye Tinggui may not be Ye Pingzhi's father.

"You're back, sir!"

Yang Juan got up from the Taishi's chair and walked in front of Su Baiyi.

"Hmm!" Su Baiyi bowed slightly.

Ye Pingzhi, who was taking medicine over there, turned his head decisively after hearing the conversation between the two, and said with a look of surprise: "Mr. Su? From this point of view, the three bloody spots on his face were even more terrifying.

"You, don't move!"

The magpie gave him a blank look and muttered, "The potion I gave you is all blind." ”

"Good, good, good!"

Ye Pingzhi turned his head again, letting the magpie take medicine on his face.

The disinfectant was splashed on the wound like this, and the sour smell made Su Baiyi's scalp numb when he thought about it, but Ye Pingzhi was unusually peaceful, and just when he turned his head, Su Baiyi even saw the joy on this product's face.

That expression is like the behavior of a prisoner who has been imprisoned for more than ten years and is about to be released from prison.

"He's good-looking!"

Su Baiyi put the things in his hand on the table, and then sat down.

"Needless to say!" Yang Juan served a cup of tea at the right time, sat down too, and whispered to Su Baiyi: "You don't know, this guy stepped over." ”

"What crossed over?" Su Baiyi was in a fog when he heard it, and while talking, he picked up the cup and took a sip of herbal tea, and his body suddenly felt a lot more comfortable.

"Fence, what you said last time, he stepped over!" Yang Juan explained carefully.

But this explanation made Su Baiyi wonder even more, what kind of fence!

"You tell be careful."

"Well, it was the other day." Seeing that Su Baiyi still looked ignorant, Yang Juan simply said loudly: "The last time we reconciled, in front of your house, do you remember?" ”

"Remember!" Su Baiyi nodded cutely.

"Yes, you persuade him, say that his father is the fence, let him step over, and then, what a sea of stars!"

"Oh......" Su Baiyi finally understood.

This is your sister, did I play well on the spot at that time, I just talked casually about the facts, this kid still took it to heart, and besides, really crossed over?

I don't know how he crossed it, and also, have you seen the sea of stars?

"Hey, hey, hey!"

Ye Pingzhi, who was dressing the medicine, heard the conversation between the two, although he couldn't immediately brick, but he opened his mouth: "I said that my surname is Yang, what bad things did I say to my husband behind my back, and I muttered." I can tell you, although we are reconciled, but I tell you, I am afraid of myself when I turn my face. ”

Burst......

Su Baiyi took a sip of tea and sprayed far away.

reconciled......

Compounded......

Your sister, you two are breaking your backs.

However, this guy, the tone of his voice now does have a hint of confidence than before, and Su Baiyi is also happy for him.

At this time, the wound on Ye Pingzhi's face was dressed, and he hurriedly walked over and sat next to Su Baiyi, and said, "Thank you, sir, really, sir, you don't know, after I crossed over, I felt in my heart, hey, how to say it, I felt round when I looked at the sun." How to put it, that mood is, it's ......"

I am the second Ao, it turns out that you used to see the sun squarely?

"Sea of Stars!" Yang Juan teased.

I didn't expect Ye Pingzhi to give face: "Yes, yes, yes, yes, it's the sea of stars, what Mr. said is not wrong at all." Ye Pingzhi tilted his head, pointed his fingers to the sky, and his temperament was almost the same as before.

Su Baiyi looked at Ye Pingzhi, who had simply changed a person, in disbelief.

Is this still the same thing?

That lewd dog!

"Damn, now let me run into the one surnamed Qin again, and I'll bite off his third leg!"

Burst......

Your sister's foul mouth is out.

"Alright, alright, tell me how you got there." Su Baiyi picked up the teacup with great interest.

"Isn't my old man promoted!" Ye Pingzhi took a deep breath, his face did not have the slightest joy brought by his father's promotion, but said very painfully: "When I had lunch today, he asked me if I wanted to go to Datong Mansion with him. Well, I forgot to mention that my old man was transferred to Datong as a governor by the imperial court. ”

"And then?" Su Baiyi asked.

This kind of going out to be an official and taking family members is a common thing.

Ye Pingzhi's face suddenly turned into a bitter melon, and said: "I was afraid that I wouldn't be able to answer his words well, so I thought of a panacea, I said, I listen to your old man, if you want me to go, I'll go." ”

Hehe......

Su Baiyi sneered in his heart.

Sure enough, Ye Pingzhi was upset, "The old man was inexplicably furious at that time, saying that I had no interest, and the bowl of eating was smashed on my face, you see, you see, these three bloody drenches are the scum of the bowl." After he dropped the bowl, he was going to beat me up. Ye Pingyi stretched out his face to Su Baiyi as he spoke, and said, "I thought about the fence that Mr. Su taught me, and then I turned my face against my father." ”

"Why, you're not...... Beat him up? Su Baiyi was taken aback.

"Not really!" After giving him ten guts, Ye Pingzhi didn't dare to fight with his father.

"Then how do you step over?"

"I dropped the bowl too!" Ye Ping's face was relaxed: "I dropped the bowl on the ground, and I fell two more." He stretched out two fingers: "You know, I left after the fall, and I was in my heart, alas, I don't know what to say, I know it's wrong, but it's smooth, I seem to really see the sea of stars!"

You two don't know, my old man looked at me at the time, hey...... It's so relieving, I'm happy to sleep by the South Lake all afternoon. ”