Editing Hyouka:Volume 4 To Commit A Deadly Sin (section)

===3===

Today's fifth period was math, taught by Omichi-sensei.

I believe that Oreki-san and Fukube-san know what kind of teacher he is.

I'm not sure where I should start so that you will understand, so I will explain from the beginning.

Omichi-sensei arrived pretty much just as the bell chimed for the fifth period. He looked displeased, but as far as I know, he has that expression for most circumstances. He opened the door, and right before he entered the classroom, he stopped for a moment and looked at the class name plate. Everything up to that point was fairly normal.

After hurriedly bowing, he started writing a quadratic equation on the blackboard. It was quite a simple equation, y = x<sup>2</sup> + x + 1, but he restricted the domain of x from 0 to 3. Then, wile tapping his shoulder with his bamboo pole, he singled out Kawasaki-san and told him to draw the range of y. Do you know Kawasaki-san? He is a tall and thin guy who stammers a little... but that has nothing to do with the story.

Kawasaki-san obviously looked confused, as was I.  We had not been taught anything about domain restrictions yet.

I thought that Omichi-sensei was testing our imagination, trying to find out what we knew about domain restrictions before starting his lesson. Frankly, I am no expert on these matters, but I have experienced this style of teaching before. Then again, this method of making students think does not seem to fit with Omichi-sensei's lesson plan.

Kawasaki-san thought about Omichi-sensei's question for a while, then said that he did not know how to answer it.

At that moment, contrary to my expectations, Omichi-sensei became angry. "What? You don't know? What were you listening to in my previous lesson?" He started berating Kawasaki-san... I don't really want to say this, but it was actually more like he was abusing Kawasaki-san.

After saying some more unreasonable words about how his future was insecure, Omichi-sensei told Kawasaki-san to sit down.

The next one chosen was Tamura-san, who is better in math than Kawasaki-san. He stood up, but was unable to give an answer.

Omichi-sensei called Tamura-san an idiot and ordered him to sit down. He then looked around the class and said in a loud voice, "Isn't there anyone who can solve this?"

I should have probably noticed it earlier, but at this point I finally realized that Omichi-sensei had mistaken how far we had gotten in the textbook. I checked the textbook, and found that today we should have only completed the methods of determining a quadratic function and started on maximum and minimum values. Omichi-sensei was off by about one hour worth of lessons.

As others in the class began to realize too, the classroom started to get noisy. That only made Omichi-sensei more irritated and he started striking the blackboard with his bamboo pole. He then criticized our attitude towards lessons, love of learning and public spirit in an exasperated tone. He also had really harsh words to say about our path after graduation and our future. Yes, that's right, he would hit the blackboard after every pause.

I think there were a few people in the class who could sketch the range of y. I do not go to a prep school, but I know that most prep schools cover lesson content considerably earlier compared to normal schools. However, those who knew the answer just kept silent, and no one raised their hand.

Omichi-sensei pointed at Tamura-san again. He was made to stand up and remain there until he thought of the answer. That was when I stood up. I told him that he might have mistaken our progress, and requested him to double-check in the textbook.

Eh? What did I say specifically?

... Sorry, but that's a secret. Whatever I said while I was angry is not something I want to recall and be proud of.

That's right, that was when I got angry.