Xueba: The Knowledge I Teach, The Crit Is Returned

Today is Saturday.

As usual, Gu Bai swept a shared yellow car at the gate of the school and rode towards the house of primary school student Li Sisi.

Although Gu Bai now has a huge sum of more than 1000 yuan, the tuition fee for the next semester is enough, and even the living expenses are enough to save a little.

But... Mosquitoes are meat no matter how small they are.

Lu Yuan did not give up his 200 yuan weekly tutoring job.

These days, Gu Bai has not continued to write papers, but has been in the library honestly.

Ask him why he goes to the library.

em.....

Of course, it is to solve the mathematical problem of Zhou's conjecture.

Unfortunately, even with the blueprints provided by the system, Gu Bai always felt that something was missing, and he couldn't really rely on his own ability to solve the problem without the blueprints.

As for what went wrong with the fall, Gu Bai didn't know either. Maybe... the only thing missing was a touch of inspiration, or maybe it was an opportunity?

soon.

Gu Bai arrived at the community where Li Sisi's house was located.

After parking the shared bicycle, Gu Bai paid 2 yuan and immediately entered a not luxurious but very luxurious community.

When she knocked on the door of Li Sisi's house, it was still Li Sisi's mother who opened the door. When she saw Gu Bai, Liu Ping's face showed a touch of joy: "Mr. Xiao Bai is here?"

During this time, her daughter Li Sisi's math scores improved by leaps and bounds, and even Li Sisi's teacher called directly to praise the child.

This makes Liu Ping very happy, and this is the first time she has received a praise call from her child's teacher.

She knew the reasons for her child's progress, so she was much more polite to Gu Bai.

"Yeah." Gu Bai smiled and nodded in response.

"Li Sisi, Teacher Xiaobai is here." After preparing slippers for Gu Bai, Liu Pingping shouted loudly towards Li Sisi's bedroom.

"Mr. Xiaobai, you're here." Li Sisi obviously didn't just get up, as can be seen from her carefully tied ponytail.

"Mr. Xiaobai, do you know how many marks I got in the math test this time?" Li Sisi with his hands behind his back, half a meter away from Gu Bai, raised his head and looked at Gu Bai who was changing his shoes mysteriously.

"How many points? 90?" Gu Bai asked curiously.

Li Sisi's previous math grades were not good, of course not bad. In their class, they have always had average grades, otherwise they would not have recruited Gu Bai to train.

However, for his first training student, who also awakened the system that day, Gu Bai was still more concerned about Li Sisi's grades.

"100, I got a perfect score of 100!"

Li Sisi took out the test paper from behind, and slowly said in front of Gu Bai with a smile.

Seeing Gu Bai take the test paper and look at it, she continued to add: "And... I am the only one in our class with a perfect score, and I took the first place in the test."

Li Sisi danced a little, took Gu Bai's arm and jumped happily, and the two little flowers trembled.

Gu Bai coughed, a little embarrassed, thinking of words of praise in his mind.

Gu Bai really couldn't think of how to praise his elementary school mathematics test.

Now in his opinion, if it does not involve the examination of college and above, or the "world problem guess", it should not be praised.

Isn't this just a matter of hands?

But fortunately, Gu Bai didn't need to think of words of praise, Li Sisi's mother Liu Ping was already excited.

"100 points!"

"Sisi, why didn't you tell me?"

"Moreover, you also took the first place in the class!!! It's amazing, it's amazing."

"It's great, it's great, Sisi, what do you want to eat for lunch today, Mom will make it."

It seems that he doesn't care much about what he eats, Li Sisi said "all right", and followed Gu Bai to start the math tutoring this time.

It is still the test paper for the primary school competition in the Mathematical Olympiad.

Li Sisi does it first, and then explains it when he encounters Gu Bai who doesn't know how.

I have to say that Li Sisi's math scores have improved a lot, at least it's not as simple as the 100 points in the ordinary primary school exam.

A primary school math Olympiad test paper, but I encountered 2 questions that I would not be able to.

Glancing at the title, Gu Bai explained without even thinking: "This is a common engineering cooperation problem."

"As you can see from the question, A's work efficiency is 1/20, B's work efficiency is 1/30, and A and B's cooperative work efficiency is 1/20*/5+1/30*9/10=7/100, and because It is required that 'A and B cooperate as few days as possible', so it should be..."

"....In the end, the cooperation between A and B will take at least 10 days."

Quickly writing the answer, Gu Bai habitually turned the pen and asked, "Do you understand?"

Gu Bai's current lectures have comprehension +40%, memory +30%, and inference +40% blessings. Don't worry that Li Sisi can't understand because he speaks too fast.

"Understood." Li Sisi nodded suddenly and said, "...Actually, it's not just an engineering problem, but some solution efficiency, and the proportion of color balls is similar."

"Ruzi can be taught." Gu Bai replied lightly.

The ability to draw inferences from one instance is immediately manifested.

"Mr. Xiaobai, you are too amazing!"

After sorting out the knowledge points in his mind, Li Sisi's eyes widened and twinkled, looked at Gu Bai admiringly and said, "Our math teachers have to think for ten minutes when we encounter such a problem, you... .It was solved in seconds without thinking."

It seems that it is not a glorious thing to be blown away by a primary school student, Gu Bai opened the topic and asked curiously: "Which university did your math teacher graduate from?"

"Nankai."

? ? ?

Now, are even elementary school teachers doing this?

"What's the matter, is there a problem?"

"No, no problem, it just feels like your math teacher's university... is pretty good."

"Hey, our language teacher is better. She is from Yenching University."

Gu Bai: "???"

Rolls, crazy rolls.

The dignified Yanda high-achieving student actually teaches elementary school!

"Okay, keep doing the questions." Gu Bai didn't talk about these related things, and he received a blow in his heart.

He is an ordinary university, is it impossible to live in society now?

After speaking a few more topics, the phone vibrated in Gu Bai's pocket.

He got up and went to the balcony directly connected to the bedroom, Gu Bai looked curiously, it was Senior Wu Hai calling.

"Gu Bai is not good, something happened!"

As soon as the call was connected, Senior Wu Hai's panicked and deep voice came.

Something happened, what happened?

However, before Gu Bai could ask clearly, Senior Wu Hai hung up the phone and sent a text message.

"Come on, lecture hall 201."

Looking at this text message, Gu Bai's brows jumped, and he had a bad feeling in his heart.

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