Math tabloid

Math tabloid

Math tabloid

Math tabloid

Math tabloid

Math tabloid

Math content 1

During the National Day holiday, our family First of all, let's buy clothes for dad. Dad picked out a dress that he particularly likes. It happens that the special price is 2% off during the National Day. Dad asked me that the price of a dress is 15 yuan, and a 2% discount is equivalent to the price of the dress multiplied by .8. Do you know how much a dress costs? I thought: If 15 times .8, it would be better to divide 15 by 1 and equal to 15, and then multiply it, and 15 times 8 equals 12 yuan. As a result, I got 12 yuan. I happily said to my father, "It's 12 yuan!" Dad asked, "Why?" I told my father the process of solving the problem, and my father said, "Yes, there is another way: multiply .8 by 1, multiply 15 by 8 to equal 12, and then click a decimal point to make 12."

After buying clothes, we went to the supermarket on the ground. My father said to me, "The dairy products in the store are being promoted. If you buy two boxes, how much discount is it equivalent to?" I said, "Let me do the math." I couldn't think of it for a long time, so I had to ask my father, who answered, "Buy two and get one free is to spend two boxes of milk to buy three boxes of milk." A box of 5 yuan is equivalent to spending 1 yuan money on 15 yuan milk, so dividing 1 by 15 is quite a discount, and dividing 1 by 15 is equal to .6, and the result is between 6.5 and 7 fold. Do you understand? " I said, "Oh, so that's it. I understand now!" "

On my way home, I also sent out many questions and discoveries about life mathematics, such as floor height, profile area, solar water capacity, national flag accuracy and so on!

this is my mathematical discovery in my life. I believe that there are more mathematical problems waiting for us! Math content 2

In daily life, everything can't be done without math, which shows how closely mathematics is related to us.

For example, when my mother goes shopping for fruits and vegetables, and goes to the printing press to reply to the manuscript, etc., she needs to use mathematics. There are many interesting mathematics in life, waiting for us to discover and explore.

During the summer vacation, my parents and I went to my cousin's house to play. I was thirsty on the way, so my father had to buy mineral water from a nearby grocery store. There is a rule in the grocery store: if you buy three bottles of mineral water, you can exchange them for one bottle of mineral water. One bottle of mineral water sells for 1 yuan money. When my father saw it, he took out 1 yuan money and gave it to the grocery store owner. He said, "The boss bought 1 bottles of water." I got the water, so I drank it hungrily and drank two bottles in a short time. Before I came to my senses, there were several empty bottles. Dad asked me, "Lingling, how many bottles of mineral water can we exchange with 1 yuan money?" I think: after drinking 1 bottles of water, I changed 9 empty bottles for 3 bottles of mineral water, 3 empty bottles for 1 bottle of mineral water … there are still 2 empty bottles left. I am happy to say to my father, "Dad, I have worked it out. It is 14 bottles of mineral water, and there are 2 empty bottles left." Dad smiled and said, "Think again!" I mused, "We can borrow another empty bottle from the grocery store owner and return it to the boss after drinking it. Oh! We can drink 15 bottles of mineral water. " Dad nodded in praise.

Mathematics is to apply flexibly and integrate theory with practice. Only by mastering mathematics knowledge can mathematics serve us better. So we should learn mathematics well and make mathematics a good helper in our study and life. Math content 3

The annual food festival is here again. I took my parents by the hand and followed the happy crowd to the food court. The festival square is a sea of people and a world of food.

there is no place to sit and eat, so we can only buy and eat while eating. A string of fish balls cost two yuan, and my mother gave me ten yuan. I bought three strings and got 4 yuan back. Then I want to eat chicken legs. My mother took another 1 yuan and stood by and looked at me. I bought three with confidence from Hubei women. I thought, three times five equals fifteen, so if you subtract 15 from 1, it equals 85. I told my mother, do you want to get back 85 yuan? My mother looked at me with a smile. "Why?" I explained it, and then, as expected, she gave me back 85 yuan. I am happy in my heart that learning mathematics has such a great effect that it is needed everywhere. After eating the delicious food, we went shopping again. My mother took a fancy to a warm-colored sheet and bought a big bed and a small bed. Big 38 yuan, little 28 yuan, mother gave 1 yuan. Mom said, "Now, how much should I get back?" I cocked my head, snapped my fingers, calculated, and whispered, "Get back 34 yuan." "Mom said," Why are you whispering? " "Because I don't know if it's right." "Self-confidence is the first step to success, son.

If you want to learn math well, you should have faith besides interest ... "I caught a glimpse of her giving her mother 35 yuan, and was about to say one more, but her mother had already given her one. I frowned, but when I thought about it carefully, I figured it out. This is the mathematics in life. Mathematics is closely related to life. In the future, I must learn math more seriously. Mathematics content 4

We should pay attention to learning and understanding mathematics from students' life experience and existing knowledge. Because life can't be separated from mathematics, and mathematics can't be separated from life. Especially in primary school mathematics, we can get mathematical prototypes in our daily life. We students have a lot of familiar mathematical knowledge around us when we have porridge. For example, we need to add and subtract when we go shopping, and we always need to draw drawings when we decorate new houses ... There are countless problems like this. These knowledge comes from our daily life, but those are all "living" mathematics textbooks!

In the past, students learned mathematics knowledge mechanically, and transferred that knowledge directly from books to their brains, and rarely applied it flexibly in real life. But now it's very different from before. Students have learned to apply mathematics to their lives. For example, I once went to my classmate's house to play, but my classmate was alone at home. Early in the morning, we were all hungry, so my classmate ran into the kitchen and started cooking breakfast by himself. At first, the classmate scoured the rice and put it in the pot, and then began to cook porridge. Then use the porridge cooking time to bake three cakes. He first put the first and second cakes into the pot. A minute later, he took out the second cake, put in the third cake, and turned the first cake over; Bake it for another minute, so that the first cake will be ready. He takes it out, puts the reverse side of the second cake into the pot, and turns the third cake over at the same time. In this way, it only takes three minutes, and the three cakes will be baked, so that he can cook other dishes in the remaining time of porridge cooking. If he is cooking and doesn't do anything else, won't he waste a lot of time? Then he won't lose a lot! Therefore, life cannot be separated from mathematics, and mathematics cannot be separated from life.

Students, let's explore the mysteries of mathematics and discover mathematics in life! Math content 5

As the saying goes, you can't find a place to get it, and it takes no effort to get it. There is mathematics everywhere in life. As long as you are willing to do it, there are many practical examples.

People are familiar with RMB, and they have to deal with it almost every day. However, few people pay attention to the question of why RMB has only three denominations, namely 1, 2 and 5, and no other denominations.

actually, there is a mathematical truth here. As a currency in circulation, when issuing RMB, banks should consider that the amount of money should be as small as possible, and it should be easy to form nine numbers from 1 to 9. This can not only fulfill the monetary mission, but also reduce the complexity in circulation. Through careful selection, 1, 2 and 5 stand out and become one of the best combinations. Because the three numbers 1, 2 and 5 can form any other number within 1, and the number of votes used is only three at most, such as: 1+2 = 3, 2+2 = 4, 5+1=6, 5+2 = 7, 5+2+1 = 8, 5+2+2 = 9, so as long as

in addition to the combination of 1, 2 and 5, there are also combinations of 1, 3 and 5 that meet the requirements of the previous two, and any other number within 1 can be formed by using them, such as: 1+1 = 2, 3+1 = 4, 5+1 = 6, 5+1+1 = 7, 5+3.

after reading the above analysis, are you interested in this math problem around you? In fact, there are many interesting math problems in life waiting for you to dig and explore ... Math Content 6

Math is indispensable in life. No matter when you are shopping or working in the office, it is inevitable to calculate and use your brain. In fact, some problems in mathematics will also be encountered in life. With the increase of grade, you will find that almost all problems learned in mathematics exist in life.

For example, during the Spring Festival, the factory will give each employee a bottle of salad oil and buy 8 bottles, that is, 2 boxes. Two shopping malls, A and B, are having activities. Buy 4 bottles (1 box) of salad oil and get 1 bottle, each bottle is 38 yuan. Buy two bottles of salad oil in the second shopping mall and get a free coupon for 5 yuan, each bottle is also 38 yuan. Is it cheaper to go to shopping mall A or shopping mall B? Then let's do the math. A: 8 times 38=34 (yuan) 2 times 38=76 (yuan) 34-76=228 (yuan)/B: 8 divided by 2=4 (bottle) 38 times 5=19 (yuan) 8 times 38=34 (yuan) 34. It seems that we should make a good calculation in the future, and we should also shop around. Look, we know from this math problem that we should "shop around" in the future.

In fact, mathematics in life is more than that. Scientists study a series of things, of course, using mathematics; Doing business is also careful, otherwise it will lose money; Even if you count the stars, you have to use numbers.

The mystery of mathematics, like a road, attracts people to look for it, but it often doesn't tell you the answer, so you have to find it yourself. Right or wrong, it won't remind you, let you judge for yourself. As long as you enjoy it, what will you find? Mathematical content 7

In our life, many mathematical problems are often involved. As long as we are diligent in thinking and good at finding and summarizing, we can solve many problems around us.

One day, my mother gave me nine coins and said, "Here are nine coins, and one of them is fake. Can you find the fake coins?" I said, "This is not easy!" I accepted the task.

I look left and right. It seems that there is no difference. I knocked with something again, and the sound seemed the same! What should we do? I thought about it, oh! With a balance, the weight of real coins and fake coins is definitely different! Mom smiled and gave me a balance without weight. She said, "Well, the fake coins are lighter, but I only have a balance without weight. Try to find out the fake coins."

I divided the coin into three parts first, and then put one on each side of the balance. The balance didn't reflect it. I think the fake coins are definitely not in these two copies. But I was not at ease. I took the left one from the balance and put the third one on it. At first, there was nothing to reflect, but the left end slowly tilted up. Oh, the fake coins were in the three coins on the left. I took out two of the coins on the left, which seemed to be the same weight! "I see, the fake coin must be that one!" I cried. "Yes, it's great that you can solve math problems in your life with your math knowledge!" Mom said.

actually, I just solved this problem with simple math knowledge. Moreover, it only needs to be weighed twice, and one of the fake coins is found out from the nine coins.

So, there is mathematics everywhere in life. We should not only study the knowledge in textbooks, but also pay attention to the mathematics in life. If you apply what you have learned in mathematics to your life, you will find that mathematics is so interesting. Mathematics Content 8

Mathematics and Life Before Li Ruiqi, Class 6 (4) of Xiaolingwei Central Primary School, I always thought that mathematics was a boring thing, but it was that that changed my view on mathematics. It was the summer of this year. One day, it was hot. After work, my father brought back a big round watermelon. Looking at the beautiful black and green stripes, my mouth was watering, so I volunteered to cut the watermelon.

I was just about to go across the board. "Slow down …" Dad said. "I'll test you. There are two ways: First, you eat a quarter of watermelon; I'll eat one-third of this watermelon, one-fourth for my mother, one-fifth for your little cousin and all the rest for you. Which one do you choose? " Hearing one fifth, I didn't even think about it. I said loudly, "I choose the second one!" " Dad smiled and said, "Think about it carefully." I think about it carefully. Isn't this the least common divisor? The least common divisor of one third, one quarter and one fifth is 6. One third plus one quarter plus one fifth equals 47 out of 6, which means I can only eat the remaining 13 out of 6, and one quarter equals 15 out of 6. Of course, I should choose the first one!

So I said to my father shyly, I didn't think it over carefully just now, but now I know I should choose the first one. "Ha ha, it doesn't matter. Just think clearly. Come on, you can cut the watermelon. Everyone is fair, one quarter each!" I cracked two knives, and the big west was divided into four petals, revealing the red pulp. Take a bite. This melon is really sweet! From this incident, I understand more and more that mathematics is really closely related to our lives. Math content 9

"Painting the Wall" is a math activity class, so we should attach importance to students' learning process. In math teaching, we should focus on revealing the methods of forming various knowledge and showing the thinking process of learning new knowledge, so that students can discover the truth and master the law through the thinking process of perception-generalization-application, which can enable students to develop a variety of thinking methods in the process of teaching this article, so that students can not only increase their knowledge, but also develop their thinking ability. This content is a process of comprehensively demonstrating the comprehensive application of students' knowledge, rather than general knowledge teaching. It needs to use the time in and out of class to combine the results of in-class and out-of-class surveys for centralized application, so the time is not limited to one class.

This content is a highly comprehensive and demanding activity for students, which is reflected in the aspects of thinking, operation, mastery of basic knowledge and comprehensive ability. The activity of painting walls is a comprehensive test for students in the above aspects. I found that although students can accomplish their tasks well in the group, because the design of this content follows the principle of breaking up parts, dispersing difficulties, breaking them one by one and cooperating in groups, there is a lack of sense of wholeness for each individual student, which will be made up in practice. Math content 1

In math class, Teacher Zheng gave us a question: A cuboid becomes a cuboid if it is 2 cm higher.