Math composition 1 page 80 of the fifth grade math book has an example, which means that there are two kinds of mobile phone charging standards in a communication company. The first category: monthly rental of 20 yuan, with the payment of 0. 1 min for each call; Category II: Free of monthly fee, paid to 0.3 yuan every 1 minute.
During the class, we calculated the charges of the total monthly call time of the two types of calls as 120 minutes and 400 minutes, and verified them with other data. Finally, we come to a unanimous conclusion that it is more cost-effective to use the 1 model and the second one when the total length of calls is long each month.
At this time, the teacher asked us again: when the total time of a month's call is equal to several minutes, are the two charges the same? No one in the class could answer at that time.
After class, this question caused me to think deeply. I think: the first category will pay a monthly rent of 20 yuan anyway, and the second category will have to offset this 20 yuan from the extra money spent per minute if it wants to be the same as the first category. If you only type 1 min, you can only offset 0.3-0. 18 = 0. 12 yuan, which is far from enough. If one minute can cancel out 0. 12 yuan, then use 20 ÷ 0. 12 ≈ 12. Oh, so life is so simple!
Composition 2 In a math class, xu teacher asked us to do oral arithmetic training, and xu teacher reported a number: "35." I actually heard: "39." I said to Sheng Yulan, Li and Ye Zilin around me: "Page 39, xu teacher said that he would do 39 pages of oral arithmetic training!" Then we started to do, "It's so hard!" I said with a questioning expression. Sheng Yulan next to him also grabbed his head and said, "Yes!" Suddenly Du Xin 'an finished it. He said, "Why are you doing it so slowly? I have done it! " Du Xing 'an's problem is somewhat complacent. I think he is thinking now: "Ha ha! Even Xu Zi Han is slower than me! "
We have been doing the penultimate question on page 39 105, and the person next to us said, "You are so slow, don't you listen in class?" Li wrote the second question on 105, and his face was full of doubts. Suddenly xu teacher came up to us and said, "Why are you so slow? Which movie did you shoot? " I replied, "Page 39." Xu teacher said in surprise, "Who told you that? It is obviously 35 pages! " I said, "I heard it myself!"
The students in our class laughed collectively and the four of us blushed. I said, "They are too noisy, I heard wrong!" " "I quickly turned the 39-page listening and writing manuscript to page 35 and wrote it quickly. Five minutes later, I finished writing and stood up at once.
This story tells us that people must keep quiet in public places. If they are not quiet, they may create a "terrible" situation for others. I understand that it is important to be quiet in class, to be with others and to be with yourself.
Math composition 3 Open the book and look at the questions above. I was lost in thought: why is this question so difficult? Why did the questioner write? I took a pen and copied down the question first, wrote a "solution, original formula =" and stayed there. Thinking and thinking, I still refused to do it. So I copied the next question, and I scratched my head.
I looked around to make sure that the teacher was not here. I looked back at the exercise book on the table behind me. It was empty and he didn't write it.
The teacher just said, "Don't eat after class. When will you finish it? " Some people who don't study very well mutter, "Don't eat at all, let's have dinner together!" "
In order to prevent us from running away, the teacher stood at the back door and pointed at us and said, "You can't leave. Leave me what you wrote and wait outside for dinner. " After she finished, I began to doubt life again. I looked at the example, rummaged through the basic training to find the question, and finally whispered, "I can't, this question is so difficult!" " "
The teacher reminded: "There are still ten minutes!" I looked out and found that several people had finished writing and were waiting for dinner at the door. In order to have a meal, I made it up. When I saw similar questions, I copied as much.
As soon as the bell rang, everyone outside went to eat happily, and I also accelerated. Finally, I finished writing. As soon as I put my homework away, I rushed to the teacher and ran to eat.
The math problem is really difficult and the rice is delicious!
Math class, composition 4. In the afternoon in physical education class, we went to class with physical education class from Class 4/kloc-0. The teacher made us stand like soldiers.
After a while, the teacher asked us to help the people in 1 class and class 4 (mainly the speakers in the station). There are 56 students in Class One and Class Four, and we recruited 18 students from Class One and Class Four.
It's Class One and Class Four's turn. They suddenly left four people in our class. There are 49 people in Class One. 56-49 = 7 people, their class is 7 more than ours, and we are 7+4 = 1 1 people, which means that our class now has 1 1 people, plus 18 people we pulled.
As for 1 class and class 4, we took away 18 people, and there were 56- 18 = 38 people left in their class. We took away 49-4 = 45 people, and their class stood 45+38 = 83 people.
This shows that there are many more people talking in our class than in their class when standing. Alas! Students, it seems that we should concentrate in class in the future, which will make us lose face!
This is my child's diary for the first grade and the next semester. What I read in the process of helping children organize, I feel that as long as I pay attention to any detail in my life, I can benefit my children. )
Composition 5 In math class, the teacher taught us a new song called "Shake, Shake". As soon as we finished learning this new song, the bell rang and I began to get nervous. What should I do? The next class is math class. What I fear most is math class, but it will start soon. Oh, my God, class is over for ten minutes. Today, ten minutes have passed so quickly!
The math teacher came in slowly and began to lecture. Class 32 is a music class, and their songs squeeze in through the window. Soon, everyone was attracted by the singing of Class 32, and the singing took away the souls of almost all the students in our class.
Everyone is singing, shaking and shaking in their hearts. Ship, shake to Waipo Bridge. The teacher patted the podium when he saw us listless, and everyone's attention came back a little, except Zhou Wenlong. Still squinting, gently intoxicated.
The teacher asked Zhou Wenlong to explain the answer to a question just mentioned, but Zhou Wenlong Jiang Ran stood up in a daze and sang: shake, shake, shake. Ship, shake to Waipo Bridge.
Before Zhou Wenlong finished singing, everyone burst into laughter. The teacher kept laughing and said, "Good, but this is a math class, not a music class. If you want to have a music class, just shake it to your music class of Class 32. " Hearing his face as red as an apple, Zhou Wenlong lowered his head and said, "Teacher, I know I was wrong. I will listen carefully in the future and will never be distracted again. " The teacher smiled and said, "Zhou Wenlong, that's right. Come and sit down. " Everyone couldn't help laughing, and the dragons around them sat down shyly.
I hope Zhou Wenlong will listen carefully in class and stop being confused. Only by concentrating on his studies can his grades improve.
Math Composition 6 In today's math class, I really realized the meaning of "details determine success or failure".
In math class, we all scrambled to answer the teacher's questions. But the teacher didn't call me once. I was so anxious that I waved my hand desperately and shouted, "Teacher! Teacher! "
"Come on, Chen Zi." Teacher Zhao said to me with a smile. Suddenly, I feel how beautiful Miss Zhao looks and how beautiful her voice is! I am the representative of boys and Feng is the representative of girls.
I began to answer questions. I thought about the process of solving the problem while copying the problem. After copying the questions, I marked the algebraic expressions of the same kind with the same underline, then simplified the polynomial according to the way the teacher taught me, and then substituted it for evaluation.
After I "finished", I subconsciously turned around and asked Zhao Yuxuan, "Right?" "By the way, by the way, it is two-thirds. Come back. " A big stone in my heart finally fell to the ground and returned to my seat with confidence. Careful Li Yongbo found that I forgot to write "so" in my formula, so he excitedly said to me, "I forgot to write, so you can add it!" When he said this, the whole class was boiling. Boys and girls have become two camps. The boy shouted at me, "Go and change, hurry up!" " "The girl shouted at me," You can't change it. You are a man. You can't change it if you write it. "Even my deskmate Guan Tianyu, a quiet girl, has now become a' female man', standing up and blocking my only way to the blackboard.
Teacher Zhao quickly changed our formula, and I scratched my head below, crying without tears, and my intestines were regretful. The teacher picked up the chalk and wrote a big "therefore" next to my formula, and put a bright red tick on Feng's formula.
Through this little thing, I understand that everything should pay attention to details, because details determine success or failure!
Math composition 7! Are you okay? Better, Wang Jingbo? As soon as afternoon arrived, an unfortunate thing happened in our class. Wang Jingbo, who suffered from leg disease, fell to the ground and couldn't stand up any more. At first sight, he knew it was an unforgettable pain. Not long after, an unpleasant thing happened in math class.
Our group answers!
This question belongs to our group!
You guys!
You fart, you shameless person!
Still in class, what are you arguing about and scolding? Teacher Hui's smiling face suddenly became serious.
It turns out that in order to make students concentrate in class and run their brains quickly, Mr. Hui asked us to comment on our homework in a group competition. The class is divided into four groups. The group leader asked the group members to talk about homework, and if they were correct, they would get extra points. If they are wrong, they won't get extra points. If the question is difficult or the explanation method is clever, points will be added, and those who speak casually will be deducted as appropriate. Everyone was playing a game happily when the teacher suddenly changed the order of the questions and the atmosphere suddenly became tense. Two groups of students argued about which group to answer. Soon, the quarrel escalated. Some students called names, some students were cynical, and some students actually started fighting. The teachers were a little out of control until the deduction was announced.
Looking at the students in Yunu, I can't help but think that one of the two groups quarrels for the sake of facts, and there must be one who reverses black and white for his own self-interest. Aggressive spirit and sense of honor are indispensable qualities of an enterprising person, but you can't do whatever it takes for honor, let alone forget the purpose of the teacher to set up this competition game!
Composition 8 In this semester's math class, we learned a new knowledge point-possibility. The teacher asked us to learn knowledge points through games. This game is to touch the ball.
The rule of the game is to put two yellow balls and a white ball in an opaque bag, and then shake the balls in the bag. Two boys and two girls in each group touch the ball five times respectively. Boys touch the white ball for victory, yellow ball for negativity, girls touch the yellow ball for victory and white ball for negativity.
The teacher assigned four people to each group and made me the team leader. As the captain, I was the first to touch the ball. I shook the ball in my bag first, and then slowly put my hand into it. I was too nervous to touch the yellow ball, but I touched it four times. I'm so unlucky!
Will another boy be lucky? The answer is no, he only touched the white ball twice, and the last two girls touched the yellow ball more often. They are the winners of this game.
Finally, the teacher told us that this game is actually unfair, because there are two yellow balls in the bag, but there is only one white ball, so it is easier to touch the yellow ball. The math teacher took advantage of the situation and introduced us to the knowledge of "possibility" and "possibility size" We listened carefully to this math class.
In this game, I not only had fun, but also learned knowledge.
Composition 9 in math class In the noisy class, the math teacher kept "mumbling", one hand collapsed on the table, his eyes narrowed into an airtight seam, and his eyes fell on a classmate. ...
In a conspicuous place, there is a "twittering bird" talking unconsciously. He is in a "paradise" and has no attention to classroom discipline at all. He kept chattering, and his boring words never seemed to stop. He crossed his legs leisurely, and his triumphant expression was witnessed by the teacher. That mouth rises higher than a mountain, harder than iron, and no one is stubborn. His eyes swept away and he found the "big secret": an "enemy" was aiming at him, and he was suddenly as presumptuous, arrogant and excited as a monkey. His eyes widened and his arrogant mouth rose, much like a social "scum". He stood up bravely and despised his "enemy" ...
At the moment, he has nothing to do. He started the "killing mode", and when the teacher said something, he was very proud, as if he had won the "Nobel Prize". The teacher couldn't help glancing at him, pointing at him like a gun, expressionless, sneering: "You, come up, go there ..." He jumped up at once, as if to become a "little devil", stumbled, dragged his guilty body to the stool in the corner, and raised his confident legs again. He had great courage and made a Poss, thinking that he was "the most beautiful boy in this street". ...
Math composition 10 Today is math class. Our math teacher rushed to the class, opened the math book, took out the paper from the math book and told us about it.
The math teacher said, "We must do this paper at home. There are several problems in this. I will tell you about it today so that we can do it well at home or in class. " Our classmates all said, "OK, no problem." Our teacher began to give a long speech. I saw my deskmate laughing all the time. Then he whispered to me, "haha, I copied all the answers the teacher said on paper." Don't think about it when you do it in the future, just copy it quickly. " As a result, this action was discovered by a math teacher with a very sharp eye. The math teacher said, "Yue Jingyan, why are you smirking?" Stand up for me. "My deskmate had to stand up slowly. Turn your eyes. Muttered in his mouth.
Halfway through the math class, I heard it, as if there was a sound of chewing cookies. Click click. The sound comes from my left. I look to the left. My deskmate is breaking his ruler. She folded his ruler in four and a half. The noise is still coming, and all the students around her have seen it. She is breaking the ruler. The teacher was also puzzled and thought, "Alas, how do you eat cookies with your classmates?" The teacher saw the man we cared about. At first glance, why did you break the ruler? The ruler turned into several petals.
So the teacher called her name again. She rolled her eyes angrily. He also raised his middle finger to despise the teacher. After a while, I began to break the ruler again. The teacher said who was watching and broke the ruler, and each group was deducted 20 points. The others panicked and quickly turned to see the teacher.
Yue Jingyan, she kept breaking the ruler until it couldn't go on. After the math class, his anger disappeared in the afternoon.
Math composition 1 1 The first class this afternoon is math. I thought that boring math class would be spent peacefully as usual. Unexpectedly, something incredible happened.
After the afternoon preview class, the students relaxed, but the boring preparation bell always lingered in their ears. The math teacher followed the bell into the classroom. We all took out our books and listened to the teacher.
When the teacher was talking about this topic, Li Bingyu cut in as usual. The teacher smiled and said, "Li Bingyu lost one point."
"Why?"
"Deduct another point." The math teacher said seriously.
Li Bingyu didn't dare to reply.
Everything is calm again, and we are all listening to the teacher. While we were listening attentively, the math teacher suddenly said, "Li Bingyu, stand up." Li Bingyu stood up obediently with a puzzled face, and it took a long time to return to absolute being. I saw the teacher's eyes stare like two bells, staring straight at Li Bingyu. The teacher faced Li Bingyu again, frowned and shouted to Li Bingyu with a serious face: "What are you doing?"
"What's wrong with me?" Li Bingyu asked with a puzzled face.
"You say what's wrong with you? Did you stop talking after class? " The teacher said angrily. We smelled a strong smell of gunpowder in an instant.
"I'm doing the math!" Li Bingyu pretends to be just.
"Go out and calculate. I summarized the knowledge points on the blackboard. Who asked you to calculate it below? " The teacher shouted at Li Bingyu even more angrily. Li Bingyu was afraid to speak when he saw it.
We all sat up straight and listened to the teacher, and no one dared to relax. When I went to the office to ask the teacher questions after class, I found Li Bingyu standing in front of the teacher pitifully. Seeing this situation, I had to retreat. This is the first time that the math teacher has lost his temper, and I believe it will be the last time. I hope that the future classes will be smooth sailing.
In math class, we are thinking about this problem.
"Touch what? Put it on the podium! " The teacher's sudden reprimand like a fire-breathing dragon startled us. Oh, it turned out that Brother Xu was absent-minded in class and was caught by an eagle-eyed teacher.
The classroom was terribly quiet at once, and all the students stared at Brother Xu uniformly. His face flushed as if he had been struck by lightning, and he looked at the teacher with fear, as if he had awakened from a big dream. Is it a toy? Is it a pen? Or a ruler? What the hell is he playing? I keep asking questions in my head like watching a movie.
Brother Xu slowly stepped onto the platform in the eyes of everyone's disbelief and handed over what he was playing on the platform. I looked at it carefully. What? It turned out to be a student ID card! What's interesting about this thing? I'm confused. "I won't go to school if I hand in my certificate tomorrow?" The teacher glared and shouted angrily, "Is the student ID card fun? Can touching photos more than 200 times change you? " Brother Xu was suddenly smashed to pieces by the teacher, and stood there stupidly, without saying a word with his mouth open. The teacher's face is as serious as compressed biscuits and the air pressure is as low as dust. The air froze at once, my eyes locked firmly, and I felt that I could swallow him in the next second without knowing my mistake. I estimate that at this moment, his intestines are all regretful, and he was sprayed to pieces by the teacher's "spittle rice". That poor thing is like a lost dog.
Anyway, desertion costs a lot. The teacher pays attention to us all the time. We are like monkeys, but we can't escape from their Wuzhishan.
Math composition 13 in the fourth quarter of the morning, the teacher said the chaos in my class as soon as he came in. After spitting, we began to talk about basic training, fill in the blanks, and let's do big calculations.
The teacher asked some good students to do it on the blackboard. Teachers are not satisfied with what they have done. In the eyes of teachers, what they do is not good at all, because they are good students. In this way, teachers are even more angry, as are students who study well, not to mention those who study badly.
The teacher told them the wrong questions. After a while, the teacher turned to me, looked at my question and asked, "Have you learned?" I replied, "Almost." After a while, the teacher asked me to do the problem on the blackboard. I went to the podium and wrote the answers three times, five times and twice. The teacher looked at the problem I did and said, "The result and process are all written correctly, but it is not the easiest way." The teacher explained the simple method.
Twenty minutes before class, the teacher asked us to do five questions, one big question and four small questions, which made some students find it difficult. Some people are upset because they can't write, some people are upset because they can't finish writing, and some people are in no hurry. The teacher said that if you can't finish writing, you won't be allowed to eat! Now they panicked, and I wrote it without saying anything. After a while, some students finished writing, and I also accelerated the pace. After a while, I finished it, too, and handed it over to the teacher at once. The teacher just read it twice and saw that I had one wrong question, so I made two mistakes. I can only correct the wrong problem silently.
It was corrected after it was changed. The teacher asked us to wait for dinner outside the classroom after class. After class, I rushed into the canteen like a bullet. The lunch at noon today is really delicious!
Math composition 14 Every time we finish learning something in math class, we have to do our homework, and today's class is no exception.
After we finished this lesson, our exercise books were also finished. At this time, some students wanted to go up and correct their exercise books, but Teacher Fan wouldn't let them. The students had to return to their seats. After a moment of silence, someone raised his hand. The teacher asked, "What are you going to do?" That classmate stood up and said, "Can Teacher Fan change?" "Teacher Fan can't change it." The teacher also said humorously. "Teacher Fan, can you change your exercise book?" That classmate corrected the original mistake. "Well, come up and change." Hearing this, the classmates came running. The students saw it and raised their hands, but most of them didn't. More and more people raise their hands, and there are more and more flattering tricks, such as the most handsome in the universe, the best math teacher in the world, and the smartest in the world … each one is exaggerated. Song raised his hand, stood up and said, "Teacher Fan, the most handsome teacher with ellipsis in the world, can you …" Song Hua was interrupted by Teacher Fan before he finished: "Ok, ok, there is ellipsis, can I refuse?" Song Shizhen after the change, Zou Jie raised his hand. She stood up and said, "The most handsome, intelligent and best teacher in the country, can you …" Teacher Fan also interrupted, "Ok, come up and change." However, Zou Jie went on to say, "Can you change the homework of the whole class?" Teacher Fan thought for a while and agreed, so many students rushed to the podium, but Teacher Fan said, "Just be careful." Thanks to Zou Jie, all the class's exercise books have been changed.
Teacher Fan is such a humorous person. In his class, he always brings us jokes.
In math class, the composition is 15 Ding Lingling. When the bell rang, Teacher Lu began to have a math class. Opening the math book, I was shocked. Hey, why are all the topics written yesterday gone? I rubbed my eyes. I clearly wrote these questions yesterday. How come the book is the same as the new one today, and I didn't do any questions?
Just when I felt a ghost, I was found by my deskmate. The deskmate raised her hand mercilessly: "Teacher Lu, I didn't do my math homework yesterday." I secretly complain, this is over, and I will be criticized by the teacher again!
Teacher Lu came up to me, and I said with grievance, "I obviously wrote my homework yesterday, and now it's all gone."
Teacher Lu was speechless. She suddenly found that there were no math books on my desk and asked, "Wu and Liu, why don't you have math books?"
My receptionist replied, "My math book is missing."
Teacher Lu seemed to understand something and said to me, "Zhou, look for your schoolbag again." Is there a math book in it? "
I immediately turned up my schoolbag, wow! There is really an identical math book lying in the bag with the name of my front desk written on it. Turn to the page of today's class, all the math problems have been finished, which I did yesterday. The truth came out. It turns out that I wrote my homework in the notebook at the front desk yesterday. The wise teacher Lu caught the "ghost"!
Alas! Now I have to do yesterday's homework again. I actually help others with their homework, which really makes people laugh and cry!