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Mathematics tabloid pictures and content

Mathematics tabloid

< p> Mathematics tabloid mathematics content 1

During the National Day holiday, our family came to Hualian Commercial Building. First, we went to buy clothes for Dad. Dad picked out a piece of clothing that he particularly liked. Just in time for the National Day, the special price is 20% off. Dad asked me, the price of a piece of clothing is 150 yuan. A 20% discount is equivalent to multiplying the price of the clothing by 0.8. Do you know how much a piece of clothing costs? I thought: 150 times 0.8, why not divide 150 by 10 equals 15, 0.8 times 10 equals 8, and then multiply, 15 times 8 equals 120 yuan, the result is 120 yuan, I happily said to my father: "It is 120 yuan!" Dad asked: "Why?" I told Dad the process of solving the problem, and Dad said: "Yes, there is another way to multiply 0.8 by 10, 150 by 8 equals 1200, and then add one decimal point. 120. "

After buying clothes, we went to the above-ground supermarket. Dad said to me: "The dairy products in the store are doing a promotion. Buy two and get one free. If you buy two boxes, it is equivalent to a discount. "What?" I said, "Let me do the math." I couldn't figure it out for a long time, so I had to ask my dad. My dad answered like this: "Buy two and get one free means buying three cartons of milk for the price of two cartons." Yuan is equivalent to spending 100 yuan to buy 150 yuan of milk. Then divide 100 by 150 to get the discount. 100 divided by 150 equals 0.6. The result is between 6.5 and 30% off. "I said: "Oh, that's it, I understand now!"

On the way home, I also asked a lot of mathematics in life, such as: floor height, silhouette area, solar water capacity, flag accuracy, etc. Waiting for some questions and discoveries!

This is what I discovered about mathematics in life. I believe that there are more mathematical problems waiting for us ahead! Mathematics content 2

In daily life, mathematics is inseparable from everything we do. This shows how closely mathematics is related to us.

For example, when my mother goes to the street to buy fruits and vegetables, she also goes to the printing press to copy manuscripts...etc., all of which require 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. We got thirsty on the way, so my father had to go to a nearby grocery store to buy mineral water. There is a rule in the grocery store: if you buy 3 bottles of mineral water, you can exchange it for one bottle of mineral water. A bottle of mineral water sells for 1 yuan. When my father saw it, he took out 10 yuan and gave it to the grocery store owner and said, "Boss, buy 10 bottles of water." , got the water, I drank it eagerly, and drank two bottles in a while. Before I could recover, there were already several empty bottles. Dad asked me: "Lingling, how many bottles of mineral water can we exchange for 10 yuan?" I thought: After drinking 10 bottles of water, I exchanged 9 empty bottles for 3 bottles of mineral water, and exchanged 3 empty bottles for 1 Bottles of mineral water...and two empty bottles left. I happily said to my father: "Dad, I calculated it. It is 14 bottles of mineral water, and there are 2 empty bottles left." Dad smiled and said, "Think again!" I said thoughtfully: " We can borrow another empty bottle from the grocery store owner and return the empty bottle to the owner after drinking. Oh! We can drink 15 bottles of mineral water." Dad nodded in praise.

Mathematics means to use it flexibly and connect theory with practice. Only by mastering mathematical knowledge can mathematics serve us better. Therefore, we must learn mathematics well and make mathematics a good helper in our study and life. Mathematics Content 3

The annual food festival is here again. I held my parents’ hands and followed the happy crowd to the food court. Festival Square is a sea of people and a world of delicious food.

There is no place where you can sit and eat. You can only buy and eat while you eat. A bunch of fish balls cost two yuan. My mother gave me ten yuan. I bought three bunches and got 4 yuan back. Then I wanted to eat chicken drumsticks, and my mother took another 100 yuan and stood beside me and looked at me. I confidently bought three chicken legs from a Hubei woman. I thought, three times five equals fifteen. So, subtract it from 100 15 is equivalent to 85. I asked my mother, should I get back 85 yuan? My mother looked at me with a smile, "Why?" I explained, and then, she found 85 yuan and gave it to me. I was very happy, it turns out that learning mathematics is so useful and it can be used everywhere. After eating the delicious food, we went shopping again. My mother fell in love with a warm-colored quilt at a glance and bought a large and a small bed each. The big one is 38 yuan, the small one is 28 yuan, and my mother gave me 100 yuan. My mother said, "Now, how much do you want to get back?" I tilted my head, counted my fingers, and whispered, "34 yuan back." "My mother said, "Why do you say it so lowly? "Because I don't know if I calculated it correctly." "Confidence is the first step to success, kid."

To learn mathematics well, in addition to interest, you must also have faith..." I glanced at her and gave her mother 35 yuan. I was about to say that there was an extra yuan, but my mother had already given her 1 yuan. I frowned. But when I think about it carefully, I understand. This is mathematics in life. Mathematics is closely related to life. In the future, I must learn mathematics more seriously.

We must pay attention to students. Learn mathematics and understand mathematics from life experience and existing knowledge. Because life is inseparable from mathematics, and mathematics is inseparable from life, especially primary school mathematics, we can get mathematical prototypes in our lives. There are many mathematical prototypes around us when we are students. Be familiar with mathematical knowledge. For example, when you go shopping, you need to use addition and subtraction. When decorating a new house, you always need to draw drawings... There are countless questions like this. This knowledge comes from life, and those are all mathematics." Live "textbook"!

In the past, students learned mathematics knowledge by rote, directly transferring the knowledge from books to their brains, and rarely applied it flexibly in real life. But now it is different from before. The big difference is that the students have learned to apply mathematics to life. For example, I once went to a classmate's house to play, but the classmate was alone at home. We were all hungry early in the morning, so the classmate ran into the kitchen and started by himself. It's time to make breakfast. First, the classmate washes the rice and puts it into the pot, and then uses the porridge cooking time to bake three cakes. He puts the first and second cake into the pot first. ; After one minute, he took out the second cake, put in the third cake, and turned the first cake over; and baked for another minute, so that the first cake was ready, he took it out, put the second cake Put the other side into the pot and turn the third cake over at the same time. In this way, it only takes three minutes for the three cakes to be baked. During the remaining time of cooking the porridge, he can make other dishes. If he can't cook it. If he does other things, wouldn’t he waste a lot of time? So, life cannot be separated from mathematics, and mathematics cannot be separated from life.

Students, let us. Let’s explore the mysteries of mathematics and discover mathematics in life! Mathematics content 5

As the saying goes: there is no place to be found without hard work. Mathematics is everywhere in life, as long as you are willing. Be a thoughtful person, and there are practical examples everywhere.

People are very familiar with the RMB, and they have to deal with it almost every day. But why do the RMB only have three denominations: 1, 2, and 5? However, few people care about the issue of other denominations.

In fact, there is a mathematical truth here. As a circulating currency, banks consider that the number of currency denominations should be as small as possible when issuing it. , and should be able to easily form the nine numbers 1 to 9. This can not only complete the currency mission, but also reduce the tediousness of circulation. Through careful selection, 1, 2, and 5 stand out as one of the best combinations. The three numbers , 2, and 5 can form any other number within 10, and the maximum number of votes used is only 3, such as: 1+2=3, 2+2=4, 5+1=6, 5+2=7, 5+2+1=8, 5+2+2 =9, so only denominations of 1, 2, and 5 are enough.

In addition, in addition to the combination of 1, 2, and 5, there are also combinations of 1, 3, and 5 that meet the previous two requirements. It can also be used to form any other number within 10, such as: 1+1 =2, 3+1=4, 5+1=6, 5+1+1=7, 5+3=8, 5+3+1=9.

After reading the above analysis, are you interested in this mathematical problem around you? In fact, there are many interesting mathematical problems in life waiting for you to dig and explore... Mathematics content 6

Mathematics is indispensable in life, whether you are shopping or working in the office Every time, it is inevitable to do calculations and use your brain. In fact, some problems in mathematics will also be encountered in life. As you get higher in grade, you will find that almost all the problems you learn in mathematics are present in life.

For example, during the Chinese New Year, the factory will give each employee a bottle of salad oil, and 80 bottles will be purchased per day, which is 20 boxes. Two shopping malls, A and B, are holding activities. Buy 4 bottles (1 box) of salad oil in shopping mall A and get 1 bottle free, each bottle costs 38 yuan. Buy 2 bottles of salad oil at Shopping Mall B and get a 5 yuan free coupon, each bottle is 38 yuan. Is it cheaper to go to mall A or to mall B? So let’s do the math. A: 80 times 38 = 3040 (yuan) 20 times 38 = 760 (yuan) 3040-760 = 2280 (yuan) / B: 80 divided by 2 = 40 (bottle) 38 times 5 = 190 (yuan) 80 times 38 = 3040 (yuan) 3040-200 = 2840 (yuan) / After such calculation, will you be surprised? It is the same shopping mall. Why is there a difference of 560 yuan when buying the same amount of salad oil? It seems that in the future, we should make careful calculations and shop around. See, we know from this math problem that we should “shop around” in the future.

In fact, there is more to mathematics in life than just that. When scientists study a series of things, of course they need to use mathematics; when doing business, they also need to be careful, otherwise they will lose money; even if they count stars, they still need to use numbers.

The mysteries of mathematics are like a road that attracts people to search for, but it often does not tell you the answer. You have to find it yourself.

It won't remind you whether it's right or wrong, let you judge for yourself. As long as you enjoy it, what will you find? Mathematics content 7

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

One day, my mother gave me 9 coins and said: "There are 9 coins here, one of them is fake. Can you find the fake coins?" I said: "This is not easy. !”, I accepted the task.

I looked left and right, and there seemed to be no difference. I knocked it with something again, and the sound seemed to be the same! What to do? I thought about it, oh! Using a scale, the weight of real coins and fake coins must be different! My mother smiled, gave me a scale without weights, and said, "Well, the fake coins are lighter, but I only have a scale without weights. You can find a way to find the fake coins."

I first divided the coin into 3 parts, and then placed one part on each side of the scale. The scale didn't reflect it, so I thought the fake coins were definitely not among the two. But I was worried, so I took off the left portion from the scale and put the remaining third portion on it. There was no reaction at first, but the left end gradually tilted up. Oh, the fake coin was indeed on the left side of the 3rd portion. in coins. I took out the two coins on the left and weighed them. They seemed to weigh the same! "I know, the fake coin must be that one!" I shouted. "Yes, it's great that you can use the mathematical knowledge you have learned to solve mathematical problems in life!" said my mother.

Actually, I just solved this problem using simple mathematical knowledge. Moreover, it only took two weighings to find one fake coin among the nine coins.

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

Mathematics and Life Xiaolingwei Central Primary School Class 6 (4) Li Ruiqi Before, I always thought mathematics was a boring thing, but that incident changed my view of mathematics. It was this summer. One day, when the weather was hot, my father brought back a big round watermelon after get off work. Looking at the beautiful black and green stripes, I almost salivated, so I volunteered to cut the watermelon.

I was about to cut it, "Slow down..." Dad said, "I'm going to test you. There are two ways: first, you eat a quarter of the watermelon; second, this I will eat one-third of the watermelon, mom will eat one-fourth, and give one-fifth to your little cousin, and the rest will be given to you. Which one do you choose?” I didn’t even think about it when I heard one-fifth? I thought and said loudly: "I choose the second option!" Dad smiled and said: "Think about it carefully." I thought about it carefully, isn't this just asking for the smallest common divisor, one-third, one-quarter The least common divisor of one-fifth is 60. One-third plus one-fourth plus one-fifth equals 47/60, which means I can only eat the remaining 10/60. Three, and one-quarter is equal to fifteen-sixtieths, so of course you should choose the first option!

So I said to my father with some embarrassment, I didn’t think carefully about it just now, but now I know I should choose the first option. "Haha, it doesn't matter. Just think about it clearly. Come on, cut the watermelon. It's fair to everyone. Each person gets a quarter!" I clicked the knife twice, and the big watermelon split into four petals, revealing its red flesh. I took a bite. , this melon is so sweet! After this incident, I understand more and more that mathematics is really closely related to our lives! Mathematics Content 9

"Painting the Walls" is a mathematics activity class, which requires attention to the student learning process. In mathematics teaching, the focus is on revealing the methods of forming each knowledge and demonstrating the thinking process of learning new knowledge. Let students discover the truth and master the rules through the thinking process of perception-summarization-application. This allows students to develop a variety of thinking methods in the process of education and teaching, allowing students to not only increase their knowledge, but also develop their thinking ability. . This content comprehensively demonstrates the process of comprehensive application of students' knowledge, rather than general knowledge teaching. It requires the use of in-class and extra-curricular time to combine the results of in-class and extra-curricular investigations for centralized application. Therefore, the time is not limited to one class.

This content is an extremely comprehensive activity that requires very high demands on students. It is reflected in aspects such as thinking, operation, mastery of basic knowledge, and comprehensive abilities. The activity of painting walls is an activity that requires students to have the above-mentioned skills. A comprehensive test in all aspects. I found that although the students were able to complete their tasks well in the group, because the design of this content follows the principle of breaking it into parts, dispersing the difficulties, solving them individually, and working in groups, it is difficult for each individual student. What it lacks in overall feel, it will make up for in practice. Mathematics content 10

In mathematics class, Teacher Zheng gave us a question: If the height of a cuboid is increased by 2 centimeters, it will become a cube. At this time, the surface area increased by 56 square centimeters compared with the original. Excuse me, what is the original volume of the cuboid in cubic centimeters?

Immediately, the class exploded.

“Haha, isn’t this simple? Isn’t it enough to just count the added 5 faces and then calculate the length of the original cuboid?”

“That’s not correct. , that’s right, only 4 noodles were added, not 5!”

“I feel the same way...”

Teacher Zheng sees that everyone has their own differences! He clapped his hands and said, "Excuse me, everyone! In this case, why don't we draw a picture? Maybe we can find the answer."

As soon as the words fell, the students picked up their pens and scrawled. Start drawing on the manuscript...

"Okay, classmates, do you know how many faces have been added after drawing?"

"4!" < /p>

"Yes, in fact, the original cuboid is equal to the current cube. We only need to divide the added area by the number of added faces to get the area of a face. So, the formula is -

“56 divided by 4! "

"Well, we know that the most important thing to find the volume of a cuboid is its length, width and height, and we can calculate the length of the cuboid by dividing the area by the height. Do you know how to find width and height? It's actually very simple, because adding 2 centimeters to the height of a cuboid turns it into a square, so you only need to subtract 2 from the length to find the height. But what about width? If you look at the question carefully, when the cuboid changes into a cube, its width does not change, so the width is the same as the length.

Okay, master, have you mastered it? ”

“Yes! 56 divided by 4 divided by 2 equals 7 centimeters, bracket 7 minus 2 bracket times 7 times 7 equals 245 cubic centimeters! ”

After listening to the teacher’s detailed explanation, I finally understood, so do you understand?

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