On the first day of school at Qingshui Primary School, a total of fifty-two students came, including thirty-eight students from Shangshuizhuang, and fourteen of them from Xue Li.

The first-grade students mainly learn the reading and writing of Chinese characters, which are the most basic, at least to learn the commonly used Chinese characters, and Zhao Yan also began to expose them to some mathematical knowledge, such as Arabic numerals, as well as simple addition and subtraction.

As for Xue Li, these second-grade students, they no longer need to learn the knowledge of language, and even in the attainments of classical Chinese, they have already passed Zhao Yan, and they don't need Zhao Yan to teach at all, in response to this situation, Zhao Yan mainly teaches them mathematics, in later generations, mathematics is known as the mother of encyclopedias, and it is even no exaggeration to say that a qiē science in later generations is based on mathematics, such as physics, chemistry, biology, etc., all need to use mathematics to derive their respective theories.

It is precisely because they know the importance of mathematics in the science of later generations, and the primary education is originally based on Chinese and mathematics, so Xue Li and his family mainly study mathematics, and they all use Arabic numerals and arithmetic symbols in later generations.

Speaking of mathematics, it was called arithmetic in ancient times, and it was also one of the six arts proposed by Confucius, and even there was a special arithmetic discipline in the Guozijian of the Great Song Dynasty, but there were great problems in arithmetic in ancient China, the first is that arithmetic is not systematic, and there is a lack of summary of the laws of operation in mathematics, and the second is that the arithmetic operations are all written in words, which is not only very complicated, but also prone to errors, in contrast, the use of Arabic numerals and operational symbols. Not only can it greatly simplify the calculation process, but also make the calculation more simple and clear.

Xue Li and the others all have a certain foundation in arithmetic, and when they first came into contact with Professor Zhao Yan's new type of symbolic arithmetic, they were also a little uncomfortable, but when they were slowly able to skillfully use those numbers and symbols, they finally realized the benefits of this arithmetic. A question that seemed complicated before, but now it can be easily calculated with those symbols, and there is more than one method, which makes Xue Li and the others very surprised, and at the same time, they really admire Zhao Yan, the teacher.

But the most surprising thing was Princess Shoukang, she originally came to the school just out of curiosity, but when Zhao Yan began to explain those new types of arithmetic, Princess Shoukang, like Xue Li and them, soon realized the convenience and speed of this new type of arithmetic. She even felt that her current level of arithmetic should be better than that of the arithmetic gentleman who taught her before.

In addition, what Zhao Yan didn't expect was that he actually had an arithmetic genius among these students, this person was the youngest Ya'er among the Xue family's brothers and sisters, before Zhao Yan showed that this little girl was very smart, and when she started to learn arithmetic, Ya'er, who was just eight years old, burst out with a shocking mathematical talent, and she had already left Xue Li and them behind in just a few days, and even Zhao Yan's elementary school mathematics could no longer satisfy her curiosity.

Seeing that Ya'er has such a shocking talent. While Zhao Yan was happy, she naturally didn't dare to waste her talent. So using some spare time, he began to add a small stove to Ya'er, talking about the more difficult middle school mathematics, and as a result, Ya'er's mastery of those boring formulas was simply shocking, and even Zhao Yan was often stumped by the questions she asked, after all, Zhao Yan's mathematics level only stopped at the middle school stage. As for the more complicated mathematics in the back, he forgot about it after he left school, and even if he became a teacher, he never picked it up.

With the stimulation of Ya'er's genius, and the fact that the other students are also good, Zhao Yan is full of enthusiasm every day. Regardless of whether there will be some talents among these students in the future, at least there is Ya'er, a mathematical genius, who can pass on the mathematical knowledge he brought from later generations.

When school was about to end that afternoon, Zhao Yan came to the first-grade classroom, and then wrote all the Chinese characters he had learned since the beginning of school on the blackboard, and began to conduct a small test. ”

Wang Cai is also Wang Qi's youngest son, he is dark and fat, not like Wang Qi at all, but he inherited Wang Qi's shrewdness, and he learns things quickly, and he is one of the best students in the first grade. I saw him stand up and read aloud: "People, mouth, hands, big and small, ......"

Originally, Wang Cai read it correctly at the beginning, but when he read the white "white", he mispronounced it as "self", which was nothing, but a crisp laugh suddenly sounded outside the window, which sounded like a group of little girls laughing, which made Wang Cai's face red all of a sudden, and then he was even more nervous, and he made a few wrong words in a row, and finally finished reading it with great difficulty.

"Well, sit down, don't be distracted by the outside world in the future, it will affect your swing!" Zhao Yan glanced at Wang Caidao lightly, as for the laughter coming from the window, he didn't pay attention to it, and still asked the next student to get up and read, but whenever someone made a mistake, there would be a burst of suppressed laughter outside.

For the group of little girls outside, Zhao Yan appeared as early as the second day of school, these girls are all children of Shangshuizhuang, and they could have come to listen to the class, but people in this era have always been patriarchal, thinking that sooner or later the girls' families will be someone else's, so they don't pay attention to it at all, and they don't want to let their daughters sit with a group of boys, for fear that it will be difficult to marry after the reputation is stained, so the people who come to study in Shangshuizhuang are all boys.

However, the village family is very loose on the discipline of children, even girls are running around every day, and sometimes they need to help work, and it is precisely because of this that those girls see their older brothers or younger brothers come to school, they naturally want to learn, so on the second day of school, a few bold girls ran to the window outside the classroom to eavesdrop, at first there were only one or two, but then more and more, now every time in class, several windows are full of girls, Zhao Yan once wanted to let them in to listen, It's a pity that as soon as the window is opened, they run, and it's useless for people to talk to them, so they can only be left to them in the end.

"Today's test results are not very good, and when the person who reads the wrong word goes back, he will copy the word he read incorrectly ten times, and I will check it tomorrow." After everyone finished the test, Zhao Yan spoke, and then gave the stack of paper in his hand to the students below, on which all the words of today's test were written, so that they could compare which word they had read wrong, and they could copy it when they went back.

Hearing Zhao Yan's command, the students below also agreed, and even Zhao Yan, who was sharp in his ears, heard that some of the girls outside also agreed, it seems that some of them didn't recognize all the words, but unfortunately their courage was too small and they didn't dare to contact Zhao Yan at all, so Zhao Yan didn't know how they were learning?

However, what Zhao Yan didn't expect was that when Zhao Yan gave the words of the test to the students below, he suddenly saw a small head poking out of the front window, with a round face and round eyes, although the skin was a little dark, but a small face was very clean, and the long head was simply tied up, a bit like a ponytail in later generations.

This is a little girl who looks like she is seven or eight years old, I saw that the other party glanced at Zhao Yan with some timidity, but immediately shrank back in fright, and after a while, she boldly stretched her head out again, and her eyes didn't dare to look at Zhao Yan at all, but she still said in a slurred voice: "County ...... The king of the county, can ...... Can you also give us a piece of paper to write on, we only need one! ”

Seeing that this little girl dared to take the initiative to talk to herself, this made Zhao Yan very happy at the same time, and walked to the window with a smile to look, and now there were twenty or thirty girls listening to the class outside, so he smiled and handed the remaining paper with words in his hand to the other party and said: "There are more than a dozen left here, you all take it!" ”

Seeing that the other party took the stack of papers, Zhao Yan turned around and opened a cabinet on the wall of the classroom, there were some endless blackboards and chalk in it, he took out some of them and handed them out of the window and said: "You also take these blackboards and chalk, copy the words you don't remember ten times tomorrow, I want to check them!" ”

"Hmm!" Hearing Zhao Yan's words, the little girl who spoke agreed and took the blackboard and chalk he sent, and then Zhao Yan went back and forth a few times, giving each little girl a blackboard and chalk, although these girls have been refusing to enter the classroom, but this time they have come every day, in Zhao Yan's heart, they have long regarded them as their own students.

Next, Zhao Yan announced that the first grade was relieved, and then came to Xue Li and they assigned homework, in fact, it was some number questions for them to practice, but Ya'er didn't have to write them, these questions didn't have any effect on her, and Zhao Yan would also find time to tutor her alone every night.

After finishing the school's work, Zhao Yan returned to the other courtyard a little tired, although there are only two classes in the whole school, but he is the only teacher, so he also feels tired these days, and sometimes he also wants to find someone to share, such as those literacy classes in the first grade, he can find a person who has read books to be the teacher, but unfortunately he can't find a suitable person for a while, so he can only be carried by himself.

The tired Zhao Yan returned to the courtyard, and at this time Cao Ying and the others had already prepared dinner, waiting for him to come back and start the meal. But just as Zhao Yan just sat down and was about to eat, he suddenly saw Lao Fu hurriedly running in and reporting to him: "King Jun, something is wrong, something happened at the military academy!" (To be continued!)

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