My math teacher's surname is Wang. He is of medium height, neither fat nor thin. His character is strange, sometimes violent, sometimes gentle and unpredictable. We must cheer up when he is in class, because what Mr. Wang says most in class is "So-and-so, what is my last sentence?" If the questioned students don't answer, Miss Wang will say, "You stand for me-next! Do you know? " Stand still until someone answers.
Mr. Wang is not that terrible. I remember once in class, Mr. Wang asked us to write vertical calculations in our notebooks. If the writing is good, the teacher will show it on the big screen. So, I neatly recorded what the teacher asked us to write in the math book. At this moment, Miss Wang came to me casually, looked at my book and grinned. He touched my head with his warm big hand, then gently took my math book and continued to patrol the class. After taking a few more books, Miss Wang showed them in class. The teacher praised our handwriting for being fast, accurate and beautiful while showing it.
Although Mr. Wang has stopped teaching our class, his gentle and warm big hands have been deeply imprinted in my mind for a long time. Tomorrow is Teachers' Day. I want to wish Mr. Wang success in his work and career!
Ten years of trees, a hundred years of people, and teacher Wang's education, I will never forget!
My math teacher in my impression, the teacher who impressed me deeply was none other than my math teacher.
Last summer vacation, I heard that a new teacher was coming, and everyone discussed: "I hope the teacher is a man, and I hope the teacher will be better to us." ..... "Ding" was having a class when a teacher in his thirties came in from the outside. You see, his height 179 cm, like a soldier, his hair stands on end, and his bright eyes look at everyone.
Teachers have two characteristics: 1. Teachers like procrastination. Once, the bell had reached the ears of the whole class, but the math teacher didn't seem to hear it and spoke more vigorously. We have no choice but to listen. Finally, the teacher said the class was over, but after a while, the bell came to my ears again. I thought to myself at this moment: the teacher really dragged her to class.
The second characteristic is easy to get angry. Once in class, the teacher assigned us many questions and asked us to finish them in 10 minutes. How can we do it so fast? How time flies! 10 minutes arrived at once, but I only did half of it. As soon as the teacher checked and saw our listlessness, he suddenly flew into a rage and said, "You are really useless. You can't even finish this. What kind of student are you? " Do these questions for me 10 times. "It's all over. The teacher's anger brought us great misfortune.
This is my math teacher. Although he may be bad in your eyes, in my heart, I still think he is a serious and responsible teacher.
I have always been good at math, and I am called a "little math prodigy", and I am often proud of it.
On this day, I want to go to the movies, but my father doesn't agree. They argued for a long time, and finally my father said, well, if my problem is solved, I will allow you to go to the movies! I think it is worthwhile to spend some brain cells in order to watch movies! Besides, my grades are very good, and there is a good chance that I can solve any problems with my father. So, I confidently said: Please make a question!
Here's the title. A truck can transport ore in the mountains 20 times a day on sunny days and 12 times a day on rainy days. Transportation 1 12 times a day, with an average of 14 times a day. How many days are it sunny and rainy these days?
I thought for a moment. According to the daily average transportation times of 14 and12, which can be expressed as 1 12 ÷14 = 8 (days), it is calculated that it has been transported for 8 days. If these 8 days are sunny, they can be shipped for 20 days. It was shipped more than the original 1 12 times160-112 = 48 (times). If there is one more day in sunny days, it will be transported 20- 12 = 8 (times), and one * * * will be transported 48 times more. I checked again: 20× 2+12× 6 =112 (times).
So, I told my father what I thought, and my father nodded.
I proudly said:? If it's rainy, I'll do it this way: [112-12× (112 ÷ 4)] ÷ (20-12) = .
Dad saw that my thinking was so clear, and his face was full of smiles. When I saw this, I ran to the cinema.
Recently, our students from grade three to grade six took a math test. I only got 92 in this exam. Five points, carelessness made me do a lot.
You're right. It's not that I can't. It was careless. There are often some size problems. Without these problems, I would be better. There is a saying: "The first mistake may be excusable, but the second mistake shows that you are a' fool'." Maybe I am this "idiot". My grades are like an olive. Olives hang from the cliff. If you are not careful, you will "bump into …" and fall down.
Achievement depends not on thinking high, but on hard work. An ideal without action is a fantasy. As Nietzsche said, the value of a thing sometimes depends not on people's income, but on people's efforts-on how much you have paid for it.
This sentence is correct. Wisdom does not lie in profound knowledge. We can't know everything. Wisdom lies not in knowing as much as possible, but in knowing what we need most and what we don't need to know. Through this exam, I not only tested what I have learned recently, but also exposed many shortcomings of myself, so that I can correct them in time in my future study.
Pearl in the history of mathematics
In the long history of mathematics, many mathematical geniuses have appeared. That is an example for us to learn, and it is also the focus in the field of mathematics. They devoted their lives to the study of mathematical knowledge.
Gu Chaohao is a famous mathematician in China, an academician of China Academy of Sciences and a famous professor of Fudan University. At the age of 24, he became famous in the field of mathematics, and his research paper entitled "Classic Field-Mill Young" was published as a monograph.
Have you ever heard of Goldbach conjecture? It is a jewel in the crown of mathematics. China's research on Goldbach's conjecture has reached the leading position in the world. The person who conducted this research was Chen Jingrun, a famous mathematician in China, who played an important role in the international mathematics field in the 20th century.
They are all brilliant figures in the field of mathematics, and it is precisely because of their contribution that people's love for mathematics is even more aroused. I believe that with our love for mathematics, we can also move the mountains of mathematics and contribute our strength to the country. Therefore, from now on, we must be ambitious, set up ideals and study hard for the prosperity of our motherland!
Equal number of people
Today, we learned about the parity of numbers. Even number is what we usually call even number and odd number is what we usually call singular number. Don't underestimate them, they are also regular!
If two odd numbers add up to an even number, for example, 2 1+2 1=42, 42 is an even number! If two even numbers are added, they are still equal to an even number, for example, 22+22=44, and 44 is an even number; If it is odd plus even, it is still equal to odd. For example, 2 1+22=43, and 43 is an odd number. From the above, we can know:
Odd+odd = even
Even number+even number = even number
Even+odd = odd
This is the equivalence of numbers. You can try if you don't believe me!
I am smarter than a businessman.
Today, my mother and I went shopping to buy clothes. My mother and I came to Renrenle, and my mother chose a dress of 268 yuan. The salesperson told us that there was an activity in the mall now, and we bought 100 minus 50.
My mother asked me, "Is it cost-effective to buy 100 and give 50 to 50%?" I think: buying 100 minus 50 looks like a 50% discount, but it's not a 50% discount, because there is no discount for the part that is not bought in full. This dress is 268 yuan. 200 yuan can reduce 100 yuan if you buy it. Finally, you have to pay 168 yuan, and 268×0 for a 50% discount. 5= 134 yuan, 168 yuan is more than 134 yuan, so a 50% discount is cheaper.
I told my mother what I thought, and her mother said, "The merchants are really smart! Buy 100 and get 50, resulting in the illusion of 50% discount. Even these subtle differences can be seen in South and South, and you are smarter than them! " I am so happy after listening to my mother's words!
simple question
There is only one wisdom island left in my math test paper. Wisdom Island is the most difficult question on the test paper, and there is another question waiting for me. I am so excited! !
The topic is this:
The sum of fraction, numerator and denominator is 30. If you add 8 to the molecule, this number is equal to 1. How much is this book? "ah!" My eyes lit up and I took out a piece of paper. "The numerator and denominator add up to 30, and it's a fraction of 1. Then the sum of numerator and denominator must be 30+8=38. I know, the numerator and denominator must be 38 ÷ 2 = 19, 19/65438. ! Subtract 8 from the molecule to get 1 1,11/9! ! Yes1119! ! Check again, 19+ 1 1=30,119/19 =19 = 65438. !
Later, I showed this question to my parents, even they didn't know. Brilliant!
As long as you are confident and careful, you can also say loudly, "This problem is too simple!" " "
The fifth essay in the fifth grade of mathematics primary school "Next Monday. We will have a math midterm exam. Please review it carefully. " Teacher Wu said to all of us. We all know in our hearts that this is the mid-term exam, so we are all in a state of intense review.
My mother bought me mid-term papers from Xinhua Bookstore and printed many mid-term contact papers from the Internet for me to do. I have great confidence in this math exam. Monday is coming. Although I have done a lot of review work, it is not a problem to get a good grade in the exam, but I still can't help but be nervous. "Ding Rinrin-"The bell rang and the teacher handed out the test papers. Suddenly, the classroom became silent and all the students began to brush their pens.
I always remember the two words that the teacher repeatedly emphasized in my heart-earnest, I do every problem seriously, and I dare not be careless at all. I successfully finished the whole paper, and the next step is to check the paper carefully. I checked it carefully. I calculated everything carefully again. Suddenly I found that my recalculated answer was different from the original answer. I have calculated this problem again. Sure enough, the original answer was wrong. Fortunately, I checked it, otherwise this question would be wrong. I checked it twice, but I still didn't trust it. I checked it again carefully. After making sure everything is safe, I'm ready to hand in my papers. Then the bell rang, and I reluctantly handed it to the podium.
One day later, the teacher approved the test paper. When analyzing the test paper, he said to us, "There are nine students in the class who got full marks, and they are-"When the teacher said this, the classroom suddenly became silent and the air seemed to freeze. They are: "Qi Jintong, Janice ..." After I heard my name, I jumped three feet high with joy, which was great!
Many things happen. As long as you listen carefully in class and review carefully at home, you can get good grades in the exam.
As the saying goes, "there is mathematics everywhere in life." If so, then even small playing cards contain the mystery of mathematics.
On Sunday, I had nothing to do, so I played poker with my father. Dad took three cards: hearts A, hearts 10, diamonds 10. I saw my father swap the first card with the third card, the third card with the second card, and the second card with the first card. Then he told me: "At present, at least one of the two cards on the right of playing card A is 10, and at least one of the two cards on the left is 10. At least one of the two cards on the left of the square is a heart, and the one on the right is a heart. What is the original order of playing cards? "
I was dizzy after listening to my father's questions and conditions. I don't know where to start. My father reminded me: "You can divide into two questions and push them back step by step." I was shocked, yes! Why not divide it into two questions? Make clear the current order before pushing backwards! I am busy analyzing my father's condition: At least one of the two cards on the right of A is 10, so A must be the first of the three cards, and one of the two cards on the left of 10 is 10, from which we can draw the conclusion that the two cards on the right are 10. I also introduce hearts and diamonds one by one according to the above method. Now the order is: hearts A, hearts 10, diamonds 10. Then, it will be pushed back. I think it's a little cumbersome. So I numbered the three cards without disorder as A, B and C in turn and exchanged them according to the conditions:
Abc-cba-cba-abcb-abcb (in current order)
From the above, I just need to exchange the last two cards I found. After I told my father my idea, my father praised me for being clever.
Through this math game, I understand that we should be flexible in solving problems and use the simplest method to solve problems faster and better.
Every day, I look forward to seeing her familiar figure, hearing her simple voice and remembering the warmth of meeting her eyes. Who is she? She is our math teacher Huang.
Miss Huang is plain-looking, with a pair of "magnifying glasses" on her kind eyes. Therefore, she often reminds us: "Sit up straight when you do your homework, or you will be like me." Say that finish, pushed his glasses. She is not as gorgeous as a peony, but quietly opens like a lily, quietly bringing us elegant fragrance. By her side, I can always feel her unpretentious personality and her serious and responsible attitude towards her work.
Miss Huang has the habit of "dancing" and "talking with her hands" in class. If you don't believe me, listen to this: This negative number means that Mr. Sun and I have 10 yuan, and I still owe Mr. Sun 5 yuan, which is equal to -5 yuan. You got it? Do image actions while talking. The students were fascinated and watched the teacher "dance" on it wholeheartedly.
Teacher Huang is such a simple and humorous person. She never lacks laughter in her class, and we learn easily, so our class is among the best. In this way, Ms. Huang completed her sacred vocation in her heart, became a ever-burning lamp on my learning road, and became the "most beautiful teacher" in my heart.
Since the fifth grade transferred to another school last semester, the math teacher has become my most talkative partner. The math teacher, surnamed Hu, is tall and dignified, and some wrinkles are inevitable. Teacher Hu is very strict. Every day when he comes to class, he brings a ruler, which is called a smart board by his classmates.
In a math class, Mr. Hu was talking about the fill-in-the-blank questions in the math newspaper, and I was listening carefully. When Mr. Hu said the correct answer was 1. 00, I am confused, and my answer is 1. At this time, I can only pray in my heart that Mr. Hu will not let the wrong person come forward, but unfortunately, Mr. Hu said: People who make such low-level mistakes should be beaten. Then he picked up the smart board and told the wrong person to stand up. I was scared. After all, I have always done well in math, and I will be laughed at by my classmates when I stand up. Moreover, I heard from my classmates that it hurts to hit this board, so I hesitated. But I thought: if I don't stand, I'm not an honest man. Besides, what will my classmates think of me when they find out? Thought of here, I pushed open the stool and stood up resolutely. At this time, not only did I not hear a jeer, but I saw the math teacher's satisfied smile. However, when the teacher smiles, the board is free. Suddenly, with a bang, the board hit my hand hard. I just gritted my teeth and endured the pain, trying not to let the tears flow. After the punishment, I sat down and covered my beaten hand, but I was very happy.