The study of French numbers, as well as the introduction to the heparchal system, took up less than half of the course time.

No matter how talented the little wizards are in terms of knowledge receptivity and numerical sensitivity, they can't cover up the gaps in their basic math knowledge, and after successfully stimulating the students' interest, the math class is gradually on the right track.

Compared with the cumbersome "scribing and counting method", vertical calculation is undoubtedly a concept that must be popularized.

However, the premise of vertical calculation is first and foremost the writing of numerical values and the familiarity with the memorization of multiplication tables - and this is also the most central and difficult starting point in the mathematics curriculum developed by Alexey and Elena.

Just as the size of a pyramid's base determines its upper limit, the same is true in many areas.

"Alright," Alexei said, gesturing the students to turn to the last few pages of the textbook, "I'm sure you've all seen the last few multiplication tables, and that's your homework for the first week." Memorize it as well as I can, and then in the next week's class, I will memorize and mark it. ”

"I don't really understand, Professor Alexey. ”

Draco Malfoy raised his hand, looked at the textbook in front of him with a frown, and said in confusion.

"There are three tables of completely different sizes, but they all have the same name......"

Behind the book in front of him, Elementary Mathematics I., there were three multiplication tables, each of which was filled with dense numbers, and even a slight glance at it made him feel like his mind was wooden, drowsy.

"Oh yes, that's exactly what I'm going to say next. ”

Alexey's voice sounded in the classroom, and the middle-aged man whispered in a complicated tone.

"As you can see, there are three multiplication formulas with different specifications on the back of your textbook, which are 9X9, 16X16, and 26X26, and you can choose any one of them to memorize according to your actual situation. ”

"It's just ......"

Alexey paused, his gaze swept over the little demonic silver-haired witch directly in front of him, and continued.

"If you choose the 9X9 multiplication table, then your highest score in this course this year will not exceed 'Good', and if you choose 16X16, you will have a chance to get 'Excellent', and as for 26X26 - this is just a challenge, and there will be no special rewards other than letting you know that you can be a little better than other wizards. ”

"Hey, can you choose any one? Then we must be ......."

Hearing this, Ron Weasley instantly came to his senses, and looked at the small watch at the front with a relaxed face.

As the "chess king" of Gryffindor House, Ron has always adhered to the idea of being able to mix, anyway, whether it is at home, in the academy or even himself, he never expects him to get many "excellent" in the final exam of each semester.

However, before Ron could finish speaking, there was a sudden sound of neat pages turning around him.

？？？？？

Ron looked at the guys around him with a puzzled face, and even Neville, who had always looked a little sluggish, took the initiative to turn to the last page, the most terrifying-looking math phalanx, and began to mumble and memorize

As for Harry and Draco, who were sitting on the other side, it was even more needless to say - they had betrayed the scumbag class a long time ago.

"I say, Harry, Neville, didn't you hear what the professor just said?"

Ron looked at the small table in front of him, and then looked at the watch next to him, which was almost three or four times the size, the corners of his mouth couldn't help twitching, and he poked Neville Longbottom on his right hand with his elbow, and whispered.

"Even if you want to hit the 'excellent', then choose that 16X16. For me, this final 26X26 multiplication table is probably the way to get us out, and instead of spending so much effort, you might as well memorize some more spells or whatever, or at least those things look a little more useful......"

At this moment, Alexey's eyes looked this way, and Ron subconsciously stopped speaking.

"But I just want to give it a try......"

Neville Longbottom looked at the dense phalanx of numbers in front of him and took a deep breath.

"Grandma kept saying that she wanted me to fight for the Longbottom family and not be laughed at by others...... I don't really have a lot of talent in spells, but I'd like to give it a try for something that I can do in a stupid way......"

As he spoke, Neville lowered his head again and continued to recite quietly.

"But—"

Ron sighed a little helplessly, as a child from a pure wizard family, he really couldn't understand the meaning of this extra learning load, what was the point of being good at math, and he didn't plan to work at Gringotts in the future.

It's just that if his classmates and friends around him choose this way, Ron can only ......

"I'm sorry, Professor Alexey, I have one more question. ”

At that moment, at the desk in front of the classroom, Hermione's arm was raised in the air.

"I really can't understand the point of that complicated multiplication table at the end - if the sixteen times sixteen table will work when we use gold galleons and silver sico, then what about the twenty-six times twenty-six table?"

With Hermione Granger's voice, the students in the classroom raised their heads and looked over curiously.

Alexei frowned slightly, his gaze first lingered on the white-haired ball beside the girl, and then quickly stood up, walked up to the "unplanned" questioner, and asked thoughtfully.

"I'm sorry, this young lady, may I ask what your name is......"

"Hermione, Hermione Granger, Gryffindor. ”

Hermione replied quickly, without the slightest hint of timidity in her bright brown eyes.

"Mr. Professor, I have already previewed this year's reference textbook during the summer vacation, if it is a basic four-rule operation, then the ninety-nine multiplication table is enough, even if you take into account the magic currency, it will not be raised to such a high level all at once. ”

"Because...... This helps to understand the hexadecimal, dear Miss Granger. ”

Alexei glanced at Elena, who was bowing slightly next to the girl, and after a moment's thought, explained softly.

By the way, the reason for asking you to memorize the 16x16 multiplication table is not only to facilitate daily calculation change, but more importantly, it will make it easier for you to understand the hexadecimal vertical calculation in the future. ”

"The smallest even prime number and the smallest odd prime number, the base number of the base number of the base system, will inevitably have their unique value. ”

"When and how it will be used ......"

Alexei shook his head, subconsciously looked out the window, and replied in a complicated tone.

"It's like learning math, and a lot depends on progress in other areas, and it may never be used, and some will be able to use it next month, but as it stands, at least you have hope......

......

At the same time, it is located in the lecture hall of the "Hogwarts House Urban-H Research District".

"All in all, that's all there is to it—"

"Don't walk around, don't reveal what you do at Hogwarts, don't study magical fields without permission, and ask the wizard for advice if you have any questions. In addition to the above, you can freely use your monthly salary and adjust your working hours. Now, let's talk about something beyond the benefits......"

Douglas cleared his throat and took out a roll of parchment from his bosom, his face grim.

“K· Mr. A. Sementyev, we are very interested in your proposed 'ternary' numerical system. As a result, over the next six months, your research content will be the highest priority project in the region – and we hope to see your implementation proposal and the issues we need help with in the implementation of the project during the week. ”

"Andrei Mendanlov, starting tomorrow every morning, a house-elf will come to your accommodation and guide you to the corresponding greenhouse and vegetable garden to complete a series of tasks, which will be explained separately afterwards. ”

"Arkhipovna ......"

"Vinogradov ......"

Hogwarts has never been a charity, and Destiny is unlikely to give Muggles relief for no reason.

As the third generation of the Dark Lord, Elena and her sisters have fully demonstrated the sincerity of the wizarding world in the past six months.

Now, it's finally her turn to start issuing the "main quest" and asking for some reasonable labor and knowledge from these non-wizarding scholars—you know, in order to complete Elena's envisioned "Hogwarts of a certain science", they now need to light up a lot of pre-"black technology".

Among them, the two technological breakthroughs that Elena is most looking forward to are......

————

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The kidnappers have been defeated again!