mathematical weekly

A week has passed before you know it. There must be something impressive. At this time, we need to write a weekly diary seriously. So what problems should we pay attention to when writing a weekly diary? The following are nine math weekly journals that I have compiled for you. Welcome everyone to learn from them, I hope it will help you.

Math Weekly 1 My math teacher has a pair of small eyes and black eyes like watery grapes. When a classmate is absent-minded below, his bright eyes will look at that classmate, and after ten seconds, he will continue to lecture.

Below the eyes is a modest nose, which just matches the face shape.

Under the nose, there is a glib mouth. Although the lips are thin, they speak powerfully. From there, you can say many things that make you "laugh".

On both sides of the head are ears, like the number "3" ears and the bridge of the nose set up a pair of glasses, which always shine with wisdom.

His hair is black and upright, like a thorn on a hedgehog.

His face is pale yellow, showing a very tired look, probably the result of working late! Every time he speaks, the muscles on his face dance rhythmically.

When I first met this teacher, I thought he must be very serious. After a long time, I think he is particularly kind. Unlike some teachers, I feel lucky to have such a teacher.

Math Weekly 2 Today is Saturday, June 65438+1October 65438+May. My father and I went shopping in South Street.

At 8 o'clock in the morning, we arrived at South Street by bus. There happened to be an old man beside the platform, and there was a talking scale beside him. Seeing me coming, grandpa smiled and said, "Little friend, do you weigh yourself?" I asked a little curiously, "How much does it cost to weigh it once?" Grandpa replied cheerfully: "You can only weigh 1 yuan at a time, and you can also measure your birth height!"

I thought to myself: this is really killing two birds with one stone!

So I stood firm on the scale. Grandpa turned on the switch and only felt something soft touch my head. Then, a small rectangular note is printed on the machine, which reads: "Weight: 27.0 kg, height 132.5 cm"! This half year is 4 cm taller, but what about the weight?

At this time, I remembered what the math teacher said, "kilogram has a name." I didn't expect to meet it today, and I know that my weight has increased by 2 kilograms! "

I was so happy on the way back! I must exercise my body!

After last week's lecture stage, Mathematics Weekly 3 will officially enter the classroom this week and carry out the actual combat stage. After the trial teaching began, my daily job was to listen to excellent math teachers' lessons-write lesson plans-try teaching-modify-try teaching, so as to practice and improve repeatedly. Until you practice what you want to say in a class, until you know it by heart Even so, when I went deep into the classroom for the first time, I still encountered many problems that I hadn't learned in normal schools and didn't expect in advance. After all, my mentality is very different when I try to teach and when I take a formal class. My tutor, Mr. Zhang, will seriously comment and analyze the results of my efforts, which also makes me more confident and curious. Under the guidance of the teacher, I understand that preparing lessons, preparing myself and preparing students is very important for a good class, and the efforts and requirements required for a short 45-minute class are endless. ...

Since the third grade, my math teacher has changed to a male teacher. His surname is Zhu, but he is not invincible as people often say. He is tall, with wide eyebrows and well-developed chest muscles. Although personable, he actually has a funny nickname-Pig Bajie. Shh, don't tell anyone. It's my little secret. If teacher Zhu hears me, I'm finished.

Teacher Zhu likes dressing up very much. Yesterday she wore a black leather jacket, today's suit, and changed into different clothes every day. I wonder what Miss Zhu will wear tomorrow. Teacher Zhu, who loves to dress up, is very responsible. He talks about solving problems for us on the podium every day, inserting ideal wings for us and taking us soaring in the book. He only asked us three things: first, we should concentrate, second, we should listen carefully with our ears, and third, we should think with our brains.

Everyone in our class likes Mr. Zhu's class. His class is not only easy, but also he can learn a lot of knowledge. Every time after class, the students are reluctant to let Mr. Zhu go, but we know that this is not possible (it will delay Mr. Zhu's other classes). Every time the students expect the next math class to come early.

Mathematics Weekly It will be sunny on Wednesday, May 20th.

Today, we learned the wide angle of mathematics. We studied the overlapping problem and equivalent substitution problem from the mathematical point of view.

The problem of overlap is very interesting. Let me give you an interesting overlapping question! The thing is: two mothers and two daughters went to the movies, but they only bought three tickets. Why?

Ha ha! You won't believe it! In fact, there are only three people, that is, grandma, mother and daughter. Because mother is grandma's daughter and daughter is mother's daughter; Grandma is mother's mother, and mother is daughter's mother. Here, because the mother is both a mother and a daughter, it is repeated, so it looks like there are four people, but there are actually only three. Interesting!

During the summer vacation of Mathematics Weekly 6, my parents and I went to Zhanjiang to visit my grandmother. It is 560 kilometers from Guangzhou to Zhanjiang, and it takes 4-5 hours by car. The iPad I used to kill time was dead, so I just looked out the window and waited, hoping to get off the highway and get to grandma's house quickly.

I don't know how long I waited, but I finally got off expressway. I am very happy. After getting off the highway, I soon arrived at my grandmother's house, but happiness is always short-lived. Not long after getting off the highway, the traffic jam began. Looking back and forth, I only saw a long queue. I can clearly see the trees outside the window because of the traffic jam. Bored, I began to count the birch trees on the roadside. 1 2 3 4 5 ... I counted 54 trees. Suddenly, I saw a mileage card that said: 275 meters. At this time, I think there are 54 trees at 275 meters. What is the average interval between trees?

54+ 1=55 (tree)

275÷55=5 (meters)

The distance between each tree is 5 meters.

Mathematics Weekly 7 Mathematics has brought people a lot of convenience and quickness, but it has also brought people a lot of troubles and many unpredictable scams. There are many general scams!

Liu Mutou opened a factory to produce children's toys. Recently, many merchants have come here to purchase goods, and their business is booming. Liu Mutou is too busy every day!

The managers in the factory are composed of Liu Mutou, his younger brother and six relatives of Liu Mutou. Employees include five leaders and 10 workers. The factory is short of manpower recently and needs to recruit a new worker.

Liu Mutou came to the conscription center and found a handsome and strong young man under various choices. The young man rushed to the recruitment center after receiving the call.

"You are the young man? What do you call it? " "I am the young man you are looking for. Just call me qi! " "Working in our factory, the average weekly salary is 300 yuan, the average monthly salary is 1.200 yuan-1.300 yuan, and there are year-end awards and bonuses. I have five days off in January and enjoy company benefits. Qi, is this treatment ok? "

Qi thought carefully: "This is good! There are still five days off in January to enjoy benefits. Where can I find such a good job? " Qi immediately accepted the generous job and felt flattered.

After a week's work, Xiao Qi asked to talk to Liu Mutou about this salary problem, because he only got 100 yuan this week.

"ah! Liu Mutou, you lied to me! I checked with other workers, and the weekly salary is clearly 100 yuan! It is not 300 yuan at all! "

Liu Mutou smiled treacherously. "Richie, take it easy. Excitement hurts the body!

The average wage is obviously 300 yuan, how can it be 100 yuan! Let me explain it to you! "

Liu Mutou took out a "payroll" and explained it to Qi. "I get 2400 a week, my brother gets 1000, my six relatives each get 250, five foremen get 200, 10 workers each get 100. A total of * * * 6900 yuan per week, to pay 23 people. 6900÷23 = 300 yuan. You see, the average weekly salary per person is 300 yuan? "

"You're right, but the reality is not like this at all! My weekly salary is still 100 yuan! " Qi was completely angered.

"Yo, you said I was right, then what do you have to say! Get to work, don't waste time! Besides, I was talking about Pingjun. "

"You are malicious! I quit, you go find another worker! " Qi stamped his foot and left the evil factory, and Liu Mutou went to find other workers.

Mathematics brings great convenience to people's lives, but sometimes it also brings unnecessary trouble. In this story, Liu Mutou took advantage of Qi's misunderstanding of the true meaning of "average" and took advantage of himself. But it caused unnecessary trouble to Qi. Therefore, in mathematics, don't be confused by the superficial meaning, but understand the real meaning, thus saving unnecessary trouble!

Math Weekly 8 At noon today, I was doing my math weekend homework. Writing, unfortunately, I have a problem. I thought about it for a long time, but I couldn't figure out a way. The question is this:

Five judges scored a gymnast, excluding a highest score and a lowest score, with an average score of 9.58; The average score after removing a lowest score is 9.66; Excluding a highest score, the average score is 9.46. What is the difference between the highest score and the lowest score of an athlete?

I saw it and thought: this question is really difficult! How to get the highest score and the lowest score?

Just as I was scratching my head, my father called. I told him this question. He said: "First find out what the total score is without the highest score, and then subtract the total score of the highest score and the lowest score. Formula: 9.46x4-9.58x3 = 9. 1 (minutes). Then find out the total score without the lowest score and subtract the total score of the highest score and the lowest score. Formula: 9.66x4-9.58x3 = 9.9 (points). Finally, after listening to Dad's answer with 9.9-9. 1 = 0.8 (points), I really think this question has become simple. After I worked it out, I thought: I should emphasize skills, not rote learning. As Steen said: "In the evaluation of mathematical theorems, aesthetic standards are more important than logical standards and practical standards: in the evaluation of mathematical ideas, whether the proportion of beauty and elegance is rigorous and correct is much more important than whether it is useful. "

Later, I used the knowledge I learned in the second volume of the fifth grade-prime factor decomposition to check this problem, and the result was exactly the same.

I am happier than anyone to solve this problem. I also understand the truth that mathematics is full of mysteries, waiting for us to explore.

Mathematics weekly article 9 20xx year x month x day x day x day

Today, because my parents went to work, my mother sent me to Xinhua Bookstore, which was crowded with people. As soon as I entered the door, a hot air came to my face. This lively scene made me suddenly impulsive. The bookshelves are crowded with people. If you want to see clearly, you have to squeeze in. I used to be so "civilized" that I forgot any courtesy. I exploited every loophole. I completely ignored the pressure from behind and chose books at will. After a while, I finally chose the book I read. Squeezing out of the crowd, I found one who looked like a teacher holding a lot of books. I asked the teacher politely, do you need any help? The teacher readily agreed. Teacher, are you choosing books for your students? Yes! How many students are there in your class? The teacher didn't tell me directly, but asked me, let me guess. There are 6 copies per person, leaving 4 1 copy, and 8 copies per person are short of 29 copies. How many students are there? How many books? This time, I was stumped. I thought about it and suddenly had an idea. The two points are different, resulting in a difference of 4 1+29=70 (books). Everyone divides six books into eight, and the difference is 8-6 = 2 (books). Oh! Suddenly, I understood that the total difference is known, and the difference between everyone is also known. Isn't that the total number? I quickly found out that there were 35 students, and when the number of students was found out, the books were easier to find. 6×35+4 1=25 1 (Ben) I told my teacher the answer, and the teacher said, "You are great! Exactly! "

In fact, mathematics is quite interesting, especially when you get the correct answer through hard work. The beauty in your heart is really unspeakable! In the future, I will explore and discover in the castle of mathematics and constantly experience the happiness brought by success.