"Dad, I also want to take math class." Xiao Xie sat on Lan Ze's right side.

Xiangxiang squeezed to Lanze's left side and slipped into her father's arms like a little fish.

The ten-and-a-half-year-old Xiaoxie thoughtfully kept his distance from his father's right hand to avoid disturbing the meal.

Xiangxiang is nine and a half years old, and her behavior is a bit childish.

However, the baby was only a few days old anyway, so Lan Ze simply asked Xiang Xiang to sit on his lap before answering Xiao Xie.

"If you can't keep up, you are not allowed to quit. If you don't understand, you are not allowed to cry. Your homework must be completed on time. If you can do these three things, you will be allowed to go to class."

"Okay." Xiaoxie smiled sweetly. "Dad, you must find a bigger room. Look," Xiaoxie stretched out his fingers to count, "there are seven of us."

All four brothers are attending classes, Lan Xuning is just the younger one. Xiao Jiang’s two daughters are also attending classes, plus Xiao Xie who joins in, there are exactly seven.

"The place on the second floor is big. You can choose a room. Brother Mo Mo will also participate remotely."

"Then, dad, help me ask for leave from the school. I study at home and I won't participate in the school's extracurricular activities."

Lan Ze suddenly felt something was wrong.

Maybe, not going to school and wanting to play with his two sisters is Xiao Xie's real purpose.

In her toy warehouse, there are piles of wigs, clothes, more than a dozen color series of cosmetics... and even a sewing machine. In addition to thinking about herself, she can only dress up as much as she likes. Now that she has two more sisters at home to play with, what's the point?

Why go to school!

"How is your periodic table of elements going?"

Xiao Xie pouted: "I don't have enough pocket money, and the later elements are too expensive. Also, several of my radioactive elements are broken."

Most of the elements she collected were centimeter-square cubes. A small piece of high-purity Pt (platinum) weighs dozens of grams. Is it not expensive?

However, Pt is not rare and is a commodity on the market. It is considered cheap.

"Let's do this. If you can find a way to prevent radioactive elements from deteriorating, I will help you buy a few elements that you are lacking. If there are other things you want, I can also consider buying them for you."

Xiaoxie blinked, as if he was completely unaware of the difficulty of this question.

"You can ask your sisters to help you figure it out."

Xiao Xie continued to blink. He looked back at the two ordinary little sisters, and then looked back at his calm father.

"Old Man Lan, I think you are trying to trick me."

"Then there's no math class, right?" Lan Ze asked.

"I have to go up there." Xiao Xie shook his head and ignored him.

"Dad, I also want to go to class with my sister." Xiangxiang said in her arms.

"Okay. Geometry is very fun. There is something even more fun, called topology."

"Humph, partiality." Xiao Xie glanced at them.

Just be biased.

Lan Ze personally raised four eldest sons, plus a younger brother, Momo. Any older brother who was naughty around him would inevitably be beaten.

When had he ever been willing to beat these two girls up when they got into trouble? He still had Lao Zheng's pot that was gilded by Xiao Xie in the cupboard.

No matter what Xiao Xie's purpose is in taking math class, Lan Ze thinks about it and thinks it's not impossible.

Momo's biological age is ten and a half years old. Xiaoxie's biological age is ten and a half years old.

Just compare the two.

If the older girl can keep up, just mess around; if she doesn't understand well, focus on cultivating her interests and do some simple and fun homework.

Anyway, there are only a few children, and each person's homework can be completely different.

Lanze's math class for his children started the next day.

Because there is a seven-hour time difference between Crescent City and Crescent City, we arranged it from 3 to 6 pm. It happened to be from 8 to 11 am in Space City.

He gave the older ones a test and got a feel for it.

It is necessary to know the true level of the proficiency test. Naturally, the range of questions is a bit large, and the questions are not very simple. Coupled with the bonus points setting for multiple solutions, the students' ability can be seen at a glance...

He used the examination system used by the Mathematics Department of University City for graduate students. He directly expanded the scope to the maximum and added a few difficult questions.

Lan Xuan was the first to submit his answer sheet at the terminal. After submitting, he immediately announced that he would give up the math class. From now on, he would be an aircraft mechanic; he spent this summer in the hangar.

Lan Ze took a look at his answers and found that... An An was quite self-aware. With his level, An An was more than enough to be a mechanic.

Among the others, the one who did the best in the exam was not Li Yixiao, who was going to college. Some of his answers were good, but some of his answers were messy. This shows that there are big gaps in his knowledge structure.

The best was Wheat, which was close to full marks. He got all the basic points. He almost solved all the difficult problems. He provided multiple solutions to many questions and got a lot of bonus points.

However, this kid is already nineteen years old after all. Reaching this level can only mean that he has passed college courses. And he has studied a little hard.

Lan Xuning did better than Lan Ze expected. Not as good as Xiaoxiao, but he still reached the "good math" level of ordinary teenagers.

Xiao Jiang's daughter was a surprise. One of her students had a slightly higher level than Ning Ning. Even though she didn't know anything she had never been exposed to, she answered quite thoughtfully.

At the same time, he gave the younger children another set of test questions in the form of pictures.

Lan Ze only told them that it was a test of understanding.

Including Momo, Xiaoxie, Xiangxiang, and Xiaomin and Gungun who came inexplicably in the middle.

Mo Mo quickly finished answering and handed in the paper. PS: [Dad, is it too easy? 】

When Lan Ze saw his words, he remembered... Mo Mo was not really ten and a half years old. He was fourteen, about the same age as Uncle Jiang's two daughters.

"Sorry, Dad made a mistake. How about you make another one?"

【Come!】

Because I wasted some time, other people's exam time ended, and I haven't handed in the paper yet.

Lan Ze called out to Xiaomai and gave him the task of explaining the questions after the test, and also gave Momo to him. Let him figure out the answer to the difficult problem that Xiaomai didn't solve.

Lan Ze...is busy taking care of some children.

After that, there will be a class every two or three days. Lanze helped the older children go through the knowledge system and drew several road maps along the route of applied mathematics. It can be used as a reference for self-study. Different fields are connected with important concepts, which can be regarded as self-study.

refer to.

The children played with kaleidoscopic boards in the real environment and twisted donuts in the projection environment...

But even though it was intuitive and interesting, Xiangxiang and Xiaomin still ran away. The two schoolchildren went back to school to participate in extracurricular activities. There were no serious classes in the summer, so it was more fun than usual.

Xiao Xie insisted on not leaving, seemingly holding his breath. Xiao Gungun also stayed.

As these two siblings were left alone, Lan Ze simply mixed Xiao Xie among the older children.

If Momo can keep up, maybe Xiaoxie can too?

...Well, his father always unconsciously regarded Mo Mo and Xiao Xie as children of the same age. By the time he realized it, half of the class had already been taught. Xiao Xie's eyes were a little dull. But that was all he could do for the time being.

It’s on.

Little Gungun was playing with a toy car on the side.

He is too young. Interesting classes like games are a bit too early for him.

The appeal of mathematics classes to him probably lies in its popularity.

The whole house is empty and quiet. Only the place where the brothers and sisters study is the most popular.
Chapter completed!