a certain scientific harry potter

Also this afternoon, Lupine was giving his first Defense Against the Dark Arts class to the second-year students, and he had visited Harry at the Gatekeeper's Lodge last night to ask if he would like to take the class with him.

Harry said yes at the time, and even slapped his chest loudly, but he didn't find out that Lupine's class had crashed with Sri Lanka until noon the next day.

"Uh... Just to make sure, you just skipped Snape's class, is it really all right?"

On the way to the Dark Magic Defense classroom, Lu Ping asked worriedly.

"It's all turned up, can I turn back now, and he can calm down?" Harry curled his lips helplessly, "It doesn't matter, anyway, he will scold me at most when he turns around, or ask me to do some hard work for him. , and won’t poison my medicine.”

I was afraid that he would poison my medicine... Lupine sighed helplessly in his heart.

He came back this time, because he wanted to please Snape because he wanted to please him.

It turned out to be a good thing now, the night of the first full moon hadn't come yet, just because the boy Harry had made a mess first.

However, in Lupine's heart at this time, he really felt that Harry's learning was a bit too incredible.

Even though he is only in the third grade, he can work as a teaching assistant to earn a salary. Regardless of the grade, he can take any class he wants at any time. He is completely free to skip classes or even leave school. Even OWLs exams can be registered at will...

With this degree of freedom, even if the prince of England came, he probably wouldn't be able to be as arrogant as him.

Needless to say, Lupine really guessed right.

He had actually met the prince of England this morning, but the other party's behavior was quite satisfactory, which did not allow Lupine or other students to guess his identity.

By the way, Harry was also very satisfied with Will's performance this day and a half.

He doesn't need to show his intelligence too much, as long as he maintains a low profile and maintains a basic good relationship with his classmates, he can have a normal campus life without many twists and turns.

"Speaking of which, why did you insist on taking the first class with me?" Harry asked puzzled when the two were chatting on the road.

"I heard that you brought out the second grade," Lupine explained with a smile, "so I think the first class should go better with you watching. And I want to see, too, you What are the skills of the students brought out~”

"So that's why you took out this thing?"

Harry conveniently lifted the water tank that had been held in his arms all the time. It was the 'teaching aid' that Lupine had borrowed from the Black Lake for his lessons.

The outside of the box was covered with a layer of black cloth, so that no one could see what was going on inside, but Harry knew very well that there was a little thing squatting inside and shivering.

This was supposed to be something that only the third graders had to learn, but Lupine took it out ahead of time. He really thinks highly of those students~

But... what is this inexplicably swollen sense of pride?

"Speaking of which, I found your name really works." Lupine patted the water tank in Harry's hand, "I just yelled at the edge of the Black Lake, and they readily lent it to me .”

"Naturally." Harry straightened his back proudly, "Generally speaking, as long as my name is mentioned, Uncle Lupine, you can basically walk sideways in Hogwarts Castle~"

In the face of the elders who are close to him, Harry can deliberately show a little "arrogance", which can make him more childish, so that he will not be regarded as the kind of monster that is difficult to approach by those close to him.

"Yeah, I know, it's Hogwarts God of War after all." Lupine nodded cooperatively, but then added with a smile on his face, "Except when facing Snape, right~ "

"Uh...you're really right."

Thinking of Si Jiao's face that seemed to have eaten a dead mouse just now, Harry's little heart began to thump involuntarily.

To put it bluntly, under normal circumstances, Sijiao is as narrow-minded as a needle.

I skipped his class this time, and I might know how he would make it up later...

Turning another corner, the two finally came to the corridor where the Defense Against the Dark Arts classroom was located, but they encountered Peeves wandering around here.

"Ahaha, isn't this Lupine? Stupid and confused Lupine?"

Seeing Lupin, Peeves immediately started yelling like a fool.

"Peeves," Harry glared at the ghost in displeasure, "Lupine is my uncle."

"Yes...is that so? Oh, Peeves is wrong! Lupine is Master Granger's uncle, so he is not a stupid and confused idiot! Hahahaha, Lupine is really amazing~ "

Peeves took off his hat to Lupine, shook it, and immediately ran away laughing.

"Uh...your name really works, even Peeves can calm down." Witnessing this scene with his own eyes, Lupine didn't know what to say.

As long as Harry's name is mentioned, he can travel freely on the Hogwarts campus, and even the mermaids in the Black Lake will pay him respect... Well, these Lupines can barely accept it.

But Harry was able to make Peeves docile, which was a bit too much.

You know, even the four robbers had to be careful when they were messing around in the past, and beware of Peeves suddenly running over to make trouble.

"It's okay, anyway, it's like what you said, except for facing Sijiao~"

Mentioning Snape, Harry sighed helplessly again, and followed Lupine into the classroom.

"It's Harry!"

"Senior Harry is here with Professor Lupine!"

Sure enough, the second graders were a little bored at first, but when they saw Harry entering the classroom with Lupine, the whole class burst into shouts of surprise.

"Okay, okay, please be quiet, gentlemen and ladies of the second grade." Lupine smiled and nodded to the whole class, "Before the class, I want to make one point, in fact, you don't need to do it because of Harry. I am so excited because I can guarantee...he will definitely come here often in the future~”

"Great!"

"Long live~"

Seeing the jubilation in the class, Lupine nodded in satisfaction.

He is a very smart person. From the applause at the opening ceremony, Lupine heard a clear sense of crisis, and knew that these second-year students at Hogwarts actually had far less recognition for him than Harry.

Therefore, in order to quickly close the distance with the students, he needed Harry by his side to help him finish his first class.

And Harry is definitely an impeccable teaching assistant. In yesterday's Protection of Magical Animals class, he had already demonstrated his assistant ability to the fullest.

In Lupine's view, since Harry can even fly Hagrid's bronze, wouldn't it be easy and enjoyable to carry himself~

(ps Hogwarts is a street, inquire about it...)

Chapter 290 The Fourth Defense Against the Dark Arts Needs Theorems

"Now we start the class, please put away the textbooks and leave only the magic wand. Our class is practical~"

After the self-introduction, Lupine waved for the water tank in Harry's hand and placed it firmly on the podium.

After that, he tore off the black cloth covering the water tank.

"It's what you have to deal with today!"

"Squeak~"

Unexpectedly exposed in front of everyone, the little thing in the water tank suddenly let out a series of screams.

It cut the surrounding aquatic plants to pieces with its slender claws, and at the same time left a series of unpleasant scraping sounds on the glass of the water tank, which also made many little wizards who couldn't stand the sound frown.

It can be seen that although this guy is small in size, his temperament is quite fierce.

"Can anyone tell me what kind of creature this is?" Lupine asked the class.

"Grindylow, it's a magical animal raised by the mermaids of the Black Lake." Luna gave the answer with just a glance.

"Very good, Miss Lovegood." Lupine nodded appreciatively, "Then, who else can tell you the dangers and weaknesses of this creature?"

Cold field.

No one answered Lupine's question this time, and after the young wizards whispered to each other for a while, many of them had expressions of embarrassment on their faces.

Children in the second grade don't have much experience with magical animals, let alone this kind of guy who lives in water. The whole class only knows about it, Luna, but she obviously doesn't want to answer the questions anymore.

"Does anyone know? This is going to be difficult..." Lupine scratched his head in embarrassment, and at the same time looked at Harry with some difficulty.

He originally thought that with Harry's "ability composition", he would definitely introduce a lot of knowledge about magical animals to the second-grade students in advance, so he prepared this Grindylow, which was supposed to be used in the third-grade class, and wanted to test it out. Take a look at the overall level of the little wizards.

As a result, they never thought about it, and the students didn't understand it at all.

"It's okay, just give it a try~" But Harry didn't have to worry about it at all, he smiled and gestured to Lupine with a 'comfortable' gesture.

Lupine wanted to see the strength of the second year, and Harry naturally agreed with both hands, and he was absolutely sure that these children would definitely surprise him.

"Well, since Harry also thinks it's feasible, let me test everyone's learning level in advance." Seeing that Harry had no objection, Lupine simply followed suit, "I'll take this Grindylow out of the water tank later. out, and what you have to do is to find a way to force it back into the water tank..."

boom!

There was a commotion, and before Lupine finished speaking, the students in the entire classroom stood up from their seats in a swarm, ran to the open space behind the classroom and stood in a row, raising their wands at the same time to stand ready.

"Are you..." Lupine froze when he saw this, and looked at Harry again in confusion.

"It's okay, Professor Lupine, just go ahead~" Harry showed a harmless smile.

"Hehe." Lupine gave a dry laugh, vaguely feeling that there must be nothing good in Harry's smile.

However, he followed the original plan and retreated to the side of the podium with Harry.

"Okay, then the test will begin~"

After a snap of his fingers, Lupine shook his wand, and the lid on the top of the water tank disappeared instantly, and Grindylow, who was already extremely irritable, also jumped out of a group of water plants.

But then, Lupine saw a scene that made him dumbfounded.

"Vadi Vasi!!" *N

A volley of magic spells was fired in unison, and in just a short moment, dozens of marbles hit Grindylow on the podium head-on and face-to-face!

"Squeak! Squeak ~ squeak!"

Caught off guard, Grindylow was hit directly by more than a dozen marbles, and hurried back into the water tank. However, the students still had no intention of stopping, so in the next round of salvo, the water tank on the podium was also directly hit. It became a pile of glass slag.

"This...don't hit it! Stop it!" Lupine was taken aback when he saw this, and hurried forward to stop him anxiously, "I borrowed this Grindylow from Black Lake, and I have to return it later! Hurry up and stop..."

In the end, under Lupine's relentless efforts to stop the attack, the students' attack finally stopped.

However, the podium at this moment is already in a mess, and Grindylow just hid directly under the podium... When Lupine found it, this guy actually poked his head into Lupin's creaking hole, hiding desperately. I won't come out anymore~

"Harry... why did you teach them this in the first grade?" Lupine held the poor Grindylow in his arms, his eyes were full of resentment.

Actually taught the first graders to use the launching spell, and it's the salvo version!

What's the matter, you want to practice a three-stage spear formation? !

"This is the basic principle that Harry taught us when dealing with unknown black magic." Before Harry could speak, Ginny stood up first, her tone full of admiration, "In the face of unknown circumstances, When dealing with enemies or spells, the first principle is to keep a distance away, it is strictly forbidden to get close, and at the same time give priority to using long-range spells such as launch spells for probing attacks."

"If the effect of the launch spell is significant, you can change the spell as appropriate and continue to launch the next attack;" Colin also stood up right behind Ginny, "If the opponent can resist the test attack of the launch spell, they should immediately Cast the Iron Armor Curse on yourself just in case; but if casting the spell doesn't have an obvious effect, or even be ignored by the opponent..."

"Run." Luna gave the final answer concisely.

Lupine: ...

At that moment, so many thoughts came to his mind that Lupine didn't know where to start.

Nima... How did you come up with such a brutal 'basic principle'?

And according to these students, they have mastered the Iron Armor Curse now?

This is a spell that only seniors can learn, and even many wizards who have graduated cannot master it!

The child of his old friend, how did he teach this group of second graders?

And...why do I feel like I'm being compared?

Realizing that he had actually lost out to a third-grade kid in the professionalism of the black defense course, Lupine suddenly felt subtly bad.

He found that the reason why Dumbledore asked him to be the professor of Defense Against the Dark Arts was probably just because he didn't want Harry to be involved in too much energy as a substitute teacher, so as to affect the study of other courses...

Well, it turns out that I am the teaching assistant~

"The so-called basic principle is actually the same as the basic law of Gamp's transformation. It is a theorem." After cleaning the podium with a cleansing spell, Harry explained to Lupine earnestly, "As for dealing with different black magic situations, And the various coping methods made, this should belong to the specific solution.”

"The category of black magic is all-encompassing. It is impossible for wizards to master all the solutions one by one. However, everything remains the same. If the theorem can be used as a guiding ideology, these complex solutions can be integrated in the end."

Chapter 290 Five Snape Is Researching Wolfbane Potion

What the theorem is, it is difficult for Harry to explain clearly to these wizards who have not taken mathematics in junior high school.

But to put it simply, the theorem of Defense Against the Dark Arts is actually one attack and one defense.

If you can repel the enemy and protect yourself, if you can do these two points, then you are already qualified in Defense Against the Dark Arts.

As for the follow-up ones, such as "use garlic to deal with vampires", "avoid being scratched or bitten to deal with werewolves", etc., these are all specific offensive and defensive methods derived from theorems, and they are not applicable all the time.

Could it be that if you don't have garlic at hand, you can't deal with vampires?