little fool's child bride

"It turned out to be a glass cup!" Someone exclaimed.

Xiao Xiao glanced at the person who spoke, and it turned out that he was not their math student.You must know that the supervising students in the mathematics department basically know that he is a member of the princelings, and they have long been familiar with the glass he took out.

"It's a glass, and it's a completely different substance from colored glaze," Xiao Xiao explained, and then carefully took out the beaker and test tube that Liu Kaize made for himself with hard foam, "Wait until you can learn from me." When all the knowledge taught, you can refine something like me."

The supervising students who were watching all looked shocked, while the supervising students who were studying mathematics showed pride and pride—that's right!Sooner or later, they will be able to refine colored glaze!

"Today we are going to talk about density," Xiao Xiao said while pouring water into the beaker. "Density is the mass per unit volume of a substance. When written as a formula, it is mass divided by volume. Its standard unit is kilogram/m3 .”

"Next, I will do a very simple experiment for you to understand what density is. Let's first pour an appropriate amount of water into this beaker, and then put this egg into it."

"Now we can see that the egg has sunk to the bottom, do you know why?" Xiao Xiao glanced at the supervisor students listening to the class below, and then chose an answer with a raised hand.

"It's because the eggs are heavy!"

"Then if you put iron and ice of the same weight into the water, which one do you think will sink to the bottom?" Xiao Xiao asked calmly.

"This is naturally a piece of iron..."

Xiao Xiao picked another prison student and answered, "Zhang Yi, what do you think?"

"It should be the density that the teacher said?" Zhang Yi thought for a while, "Ice cubes have a relatively low density, so they will float on top; iron cubes have a relatively high density, so they will sink to the bottom of the water."

"That's right, both students should sit down." Xiao Xiao nodded with satisfaction, "The egg is denser than water, so it sank to the bottom of the water."

Xiao Xiao took out the salt and added it to the water one spoon at a time. After four spoonfuls were put in, the eggs slowly rose up.Xiao Xiao knocked on the table and waited until it was quiet before speaking: "After I put the salt, the eggs floated up again. Do you know why?"

"Because eggs are less dense than salt water!"

Xiao Xiao praised: "That's right!"

"When salt is added to the water, the density of the water increases, and when it is denser than the egg, the egg floats."

Everyone lamented that there are so many mysteries hidden in the small water, but at this moment, an unsociable voice came from the auditor: "But what's the use of knowing this density?"

The person who spoke was a boy with handsome eyebrows and starry eyes, but the disdain on his face made Xiao Xiao very upset, so Xiao Xiao raised his lips with a smile: "Then what's the use of writing a good handwriting, maybe Anbang governs the country and the world? What's the point, maybe to protect the family's safety abroad?"

"That's different!" Lan Jiarong retorted, "Good words and a good piano can not only cultivate sentiment, but also make good friends. But what can you do if you know the density? Can't you go to the street and play tricks?"

"The simplest, density can be used to identify the material that makes up the object. Density is one of the characteristics of matter. Every substance has a certain density, and the density of different substances is generally different. Therefore, we can use density to identify substances. The method It is to measure the density of the substance to be measured. By comparing the measured density with the density of various substances in the density table, you can identify what the object is made of. For example, those things that only change the surface color to fill the number, just measure Just look at its density and you can tell if it’s true or false.”

"Secondly, you can calculate the mass of some objects that are difficult to weigh or the volume of objects with more complex shapes. Just like Zhang Yi asked me in the morning how to calculate the volume of objects that are not regular polygons, I told him at the time that he used division and combination, But this is arithmetic. In fact, we will encounter many objects that cannot be divided or combined at all. At this time, we can directly measure its weight, and then divide it by the density of this material to get its volume. Similarly, when We can also get mass by multiplying volume by density for objects whose mass cannot be measured."

"The third is to judge whether an object is hollow or solid. For example, in agriculture, farmers will use salt water to float and select seeds, because hollow, deflated bad seeds will float on salt water because of their low density."

"There are still many applications in life, such as farmers using wind power poplar to sort full wheat grains, flat grains, and grass clippings in agriculture; in business, using liquid density meters to identify the concentration of milk and wine; transportation, aerospace In equipment, high-strength, low-density composite materials are used; in product packaging and transportation, foam plastics with low density are used as fillers to achieve shockproof, convenient transportation, and low prices; The separation of substances is also an example of using the separation of different densities. When petroleum and rare earth resources appear in the future, density can help geological exploration team members determine the types of mineral deposits and their economic value. If you still want to hear, I can continue to give you examples .”

"How is it? Are you satisfied with my answer?" Xiao Xiao looked at him calmly.

The supervisors of the school turned their heads to look at Lan Jiarong, but unfortunately his face turned red and he couldn't say a word.Until Xiao Xiao was about to open his mouth to expose this matter, he suddenly became angry from embarrassment: "What is the difference between your arithmetic and Zaoli, a trader! What about agriculture and business, you can't be called learning at all!"

Xiao Xiao was also angry: "What is learning? Knowledge of worldly affairs is knowledge, and understanding of human feelings is writing. Understanding worldly affairs and mastering its laws are learning; handling things properly, understanding the truth, and summarizing experience are writings. I am now Let me tell you, what we are learning now is a new science, its name is physics!" The audience was silent, and even Lan Jiarong was shocked by Xiao Xiao's aura and froze in place.

"I've been thinking about using small experiments to arouse your interest these days, but I forgot to tell you that this is no longer the scope of mathematics, but a new subject," Xiao Xiao tried to calm down the anger in her heart, After some difficulty, he regained his composure. "It is a natural science that focuses on the study of matter, energy, space, and time, especially their respective properties and their interrelationships. Physics is knowledge about the laws of nature. More broadly, physics seeks to analyze phenomena that occur in nature in order to understand its rules."

"Basically speaking, physics is the study of how everything works in this world."

"It's impossible..." Lan Jiarong said in shock.

Xiao Xiao sneered: "Impossible? Do you know why fallen leaves fall down instead of up? Do you know why there are day and night? Do you know what the ground we step on is made of?"

"You do not know."

"And I know."

"What I want to teach is to tell you why flowers are red, how birds fly, and what is in the sky. I can tell you without exaggeration that as long as you study hard, one day people will be able to Flying in the sky, can run faster than a horse."

"you're lying!"

Xiao Xiao looked at Lan Jiarong coldly: "I never lie."

"Really?" Zhang Yi asked in disbelief, "The teacher wants to teach us such a powerful knowledge?"

"There is no one subject that is not good at learning. It depends on yourself whether you are good at learning." Xiao Xiao listened to the bell outside the school, poured out the water in the beaker, and said neither salty nor salty, "This morning We have talked about how to calculate the volume of an object, so you may wish to calculate the density of water after you go back. This is our extracurricular homework. I have asked Zhang Yi to send you the practice questions during my lunch break. Remember to hand them in to me before class the day after tomorrow. On the table, copying each other is not allowed."

Only then did the supervisors of mathematics come to their senses from Xiao Xiao's wonderful debate just now: "Yes, teacher."

Seeing that the inmates had no problem, Xiao Xiao finished packing the beaker and left, not knowing how excited the invigilators were, and how embarrassing Lan Jiarong was.The mathematics students finally came out of the shadow of inferiority in the past. Even on the way to the meeting hall, they whispered what Xiao Xiao said one by one.

People are flying in the sky!

For some reason, the supervising students in the mathematics department believed such absurd words, and all of them raised their chests and heads up, as if they would soon be able to soar in the sky like birds.People from other academies were amazed when they saw it, and quickly exchanged information with people they knew.But after knowing what happened, most of the supervising students felt that the mathematics students were pitiful and ridiculous, and they would believe the wild words of a teaching assistant.

"I heard that Lan Jiarong is speechless?" A student of Taixue sneered.

The other said with the same disdain: "Isn't it? I have been studying at Taixue for half a year, but I didn't learn it, and I got mixed up with the Shuxue group, and even went to attend lectures! Hahahaha! I laughed so hard!"

"However, it's really annoying to see the group of people in Mathematics look so proud of the villain," another Guozi Xue supervisor at the same table threw the chopsticks in his hand, squinted and said, "I heard that they will still be the teaching assistants the day after tomorrow. In class, how about it, do you want to smash the field?"

The Taixue student who spoke before immediately agreed, and then clapped his hands and laughed loudly: "This is what it should be! Let them know that not everything can be counted as learning! Rats should stay in the stinky ditch!"

The Guozijian said that it was not involved in political affairs, but the students there had already learned the rules of the officialdom thoroughly, the most obvious being the respect for rank and party affiliation.Taixue learns from Guozi, and calligraphy follows Guangwenguan. Xiao Xiao's "nonsense" to Lan Jia's promise is simply a stone that stirs up thousands of waves. All kinds of voices emerge one after another. The scorn of the stinky rat.Only some people in Calligraphy insisted that at least Xiao Xiao's class was useful, but they were quickly drowned in the ridicule of other schools, and the Guangwen Hall expressed that they would disassociate themselves from Calligraphy.