Writing a composition with the use of mathematics

1. The role of mathematics in life (composition of more than 6 words)

Learning mathematics is to be applied in real life. Mathematics is used by people to solve practical problems, in fact, mathematical problems arise in life.

For example, when you go shopping, you naturally need to add and subtract, and when you build a house, you always need to draw drawings. There are countless problems like this, and this knowledge comes from life and is finally summed up as mathematical knowledge, which solves more practical problems.

I once saw a report that a professor asked a group of foreign students, "How many times will the minute hand and the hour hand coincide between 12 o'clock and 1 o'clock?" Those students all took their watches off their wrists and began to set their hands; When the professor talks about the same problem to China students, the students will apply mathematical formulas to calculate. The commentary said that it can be seen that China students' mathematical knowledge is transferred from books to their brains, so they can't use it flexibly. They rarely think of learning and mastering mathematical knowledge in real life.

From then on, I began to consciously associate mathematics with my daily life. Once, my mother baked cakes, and two cakes could be put in the pot.

I thought, isn't this a math problem? It takes two minutes to bake a cake, one minute for the front and one minute for the back, and at most two cakes are put in the pot at the same time. How many minutes does it take to bake three cakes at most? I thought about it and came to the conclusion: it takes 3 minutes: first, put the first and second cakes into the pot at the same time. After 1 minute, take out the second cake, put in the third cake and turn the first cake over; Bake it for another minute, so that the first cake will be ready. Take it out. Then put the reverse side of the second cake and turn the third cake upside down at the same time, so it will be all done in 3 minutes.

I told my mother this idea, and she said, in fact, it won't be so coincidental. There must be some errors, but the algorithm is correct. It seems that we must apply what we have learned in order to make mathematics serve our lives better.

Mathematics should be studied in life. Some people say that the knowledge in books now has little to do with reality.

This shows that their knowledge transfer ability has not been fully exercised. It is precisely because learning can not be well understood and applied in daily life that many people do not attach importance to mathematics.

I hope that students can learn mathematics in life and use it in life. Mathematics is inseparable from life. If they learn deeply and thoroughly, they will naturally find that mathematics is actually very useful. 2. The advantages of mathematics (especially writing)

Useless There is a legend that once, mathematician O 'Keeley taught a student to learn a theorem.

After that, the young man asked O 'Kidd what benefits he could get from learning. O 'keeled once called a slave and said to him, "Give him three Apor, and he said he would benefit from what he learned."

In ancient Greece, where mathematics was still very philosophical, it is understandable to be despised for exploring the origin of the world and the way of all things and getting what "benefits" you want. It's like another story: in a bar in Paris, a girl asked her lover why she was late. The young man said that he was working on a math problem. The girl shook her head and asked, "I really don't understand. What's the use of math when you spend so much time doing it?" The young man looked at her for a long time and then said, "Honey, what's the use of love?" The scattered knowledge composed of experience is obviously less credible than the systematic knowledge, and we have always had more trust in the knowledge system.

Newton's mechanical system, for example, can accurately calculate the motion of objects, even if it is estimated that the solar eclipse in 1 million years is almost not bad; Darwin's theory of evolution, which takes species evolution and natural selection as the core, integrates the whole biological world into an orderly and organic system, making us know the relationship between different species. However, even the classic knowledge system is not enough to carry all our trust all the time, because new experience and new research will adjust and update the old knowledge system, and new theories will replace the old ones.

The appearance of Einstein's theory of relativity makes Newton's mechanical system a special case in a broader theory. With the development of genetic theory and the accumulation of fossil evidence, the idea of gradual change in Darwin's theory of evolution is challenged. Such cases are full of the whole history of scientific development. Let us look at those seemingly impeccable knowledge systems with suspicion from time to time and be wary of them. However, when people pursue certainty and reliability, there is still an oasis of peace, and that is mathematics.

Mathematics is our most reliable science. Once something has been proved by mathematics, it is certain. In addition, the new mathematical theory opens up new fields, which can contain but not deny the existing theories.

Mathematics is the only science in which the new theory does not overthrow the old one, which is also the proof that mathematics is trustworthy. What is the ultimate goal of mathematics? We call Tessa Thales of ancient Greece the first person in ancient mathematics, because he didn't seek numerical solution for any regular object like the Egyptians or Babylonians, and his ambition was to reveal a series of truths.

For example, for a circle, his answer is not about a special circle, but an arbitrary circle. He is interested in all the circles in the world. The ideal circle he created can be asserted: any straight line passing through the center of the circle divides the circle into two halves, and the truth he found reveals the nature of the circle. Mathematics requires universal certainty.

Mathematics should draw a clear line between results and proofs. No matter how changeable the world is, we always have to rely on it. By pushing this reliance to the extreme, we can appreciate the power of mathematics.

this is also the great use of mathematics. Our ancestors began to use mathematics to solve specific engineering problems very early. In this respect, all ancient civilizations have excellent performances, but the ancient Greeks' understanding of mathematics deserves our admiration.

First of all, the Pythagorean school regards numbers as the elements that make up the world, and the relationship of all things in the world can be analyzed by numbers, which is by no means comparable to our modern concepts such as "digital earth". It is a world view, and everything can eventually be reduced to numbers, and what is explained by mathematics can become a sacred belief. I think people who hold this idea must always be in awe of nature and will not be arbitrary and self-deceiving. Secondly, the ancient Greeks used mathematics for debate. They demanded that mathematics provide arguments about political, legal and philosophical arguments, absolutely reliable evidence and "irrefutability"; They are not satisfied with empirical evidence (such as those of their predecessors in Egypt and Babylon), but further demand proof and universal certainty.

what a lovely and solemn request! Those who have such requirements must be sensible and aboveboard. In order to ensure the reliability of thought, thinkers in ancient Greece formulated the rules of thought. In human history, thought became the object of thought for the first time. These rules are called logic.

For example, a positive proposition and a counter-proposition cannot be recognized at the same time, in other words, an argument and its counter-argument cannot be true at the same time, that is, the law of contradiction; For example, a positive argument and a negative argument cannot be false at the same time, that is, law of excluded middle. All these efforts embody the pursuit of certain and reliable knowledge. A history of mathematics is the history of expanding the field of certainty. 3. Composition on the topic of mathematics

We can't live without mathematics, such as the weight of food, the date of the year on the calendar, and some mathematical equations are related to mathematics. Today, I want to introduce some math problems to you!

When we get up in the morning, when we open our hazy eyes, we look at the alarm clock at first sight. The numbers on the alarm clock are the mathematics in life. Because our time in a day is 24 turns of the hour hand, 144 turns of the minute hand and 864 turns of the second hand. Then 24*3= a month, and a month *12= a year. This is the mathematics of time.

At ordinary times, we can't go to the vegetable market without math. On Sunday, my mother took me to buy vegetables. In front of a stall selling cabbage, my mother bargained with the cabbage seller. Finally, I bought three pounds of Chinese cabbage at the price of one pound and eighty cents, and I bought three pounds of Chinese cabbage with a verbal agreement. My mother asked me, "How much is it cheaper for me to buy food like this?" I thought about it and said to my mother, "It's twenty cents cheaper." If I have to sell vegetables, my aunt will praise me. When I got home, my mother asked me, "How did you calculate it?" I smiled and said, "Let me count 3 Jin of Chinese cabbage * first. 8 yuan =2 yuan 4 jiao, then buy 3 Jin and get 1 Jin =4 Jin, and then calculate 2 yuan 4 Jiao ÷4 Jin =6 Jiao, isn't that 8 Jiao -6 Jiao equal to 2 Jiao! " This is the unit price * quantity = total price in life.

I usually go to Xinhua Bookstore with my mother by bus. The bus travels one kilometer a minute, and it takes me about twenty minutes. My mother asked me, "How many kilometers is the distance between our home and Xinhua Bookstore?" I gestured with my fingers and said to my mother, "It's about twenty kilometers." This is the speed * time = distance in life.

"Diligence+Diligence = Success" is the truth I have realized through my real life, and it is also my general order of solving problems. I always have to read the questions first, master the relationships among them, list the formulas and answer them step by step. Sometimes, we have to draw pictures to understand the topic.

In fact, there are many wonderful mathematics in life, waiting for us to find and discover. 4. The function of mathematics mainly refers to the function of mathematics around

First of all, mathematics is a language just like Chinese and English. Mathematics is a scientific language. It uses various means such as numbers, symbols, formulas, images, concepts, propositions and arguments to express the quantitative relationship between everything in the world and its position relationship in space very accurately and concisely. You can't understand science without knowing mathematics.

Secondly, mathematics can develop people's rational thinking. If Chinese can be used to express people's feelings, wishes and wills and to think in images, then mathematics is mainly used for rational thinking such as generalization, abstraction, inference and demonstration. Mathematical reasoning is one and the other is two, which is accurate and error-free, and it is very beneficial to cultivate people's thinking ability.

finally, mathematics is widely used. From shopping on the street to calculating money, to designing the shape of rockets and controlling the operation of satellites, it all depends on mathematical calculation. 5. Write a 5-word composition on the theme of "Mathematics in My Mind"

The curriculum reform of primary school mathematics in my mind, such as the rolling of spring thunder, has had a huge shock wave to the traditional classroom teaching. The classroom is undergoing profound changes, with more dynamics, vitality and vitality, and children often have their own insights, which makes people happy. I think mathematics classroom teaching must start with changing students' learning attitude and learning emotion. Make students change from mechanical and passive learning to creative and active learning. Combined with my own practice, I will talk about some experiences: 1. Create situations to stimulate interest. According to the teaching content and students' real life, I will use the abstract, single and boring knowledge in the teaching materials to stimulate students' motivation and desire to learn from the created situational activities through familiar and loved situations. For example, I. And talk about what it means. Then let students use what they have learned to solve how to find seats in the cinema, so that students can use what they have learned, enrich and develop what they have learned. When teaching "compare height with height", I began to ask students: "Who wants to compare height with teachers?" Create a teaching scene in which teachers and students compete for height. Then let students discuss how to compete for height and express their opinions freely, and then guide students to observe how teachers and students compare. If the teacher was sitting and the classmates were standing, what would your answer be? Let students master the method of comparison, and then let them compare each other, which makes the teaching content more problematic, interesting, open, different and practical. Second, find problems and ask questions. In mathematics teaching, we should cultivate students' ability to ask questions. Mathematical questions can be asked directly in mathematics situations, or students can ask situational questions around situations created by teachers. The generation of questions can play a guiding role in our teaching. Sometimes, we can determine the key points of knowledge that need to be solved in this class according to the questions raised by students. For example, when teaching "two digits minus one digit (not abdicating)" in the first grade, the textbook shows the situation in which three children have more cards, and through the observation of the situation map, let the students ask some math questions. There are several problems that we will solve in the next few classes. Now that the questions have been thrown out, I should guide and ask the students. Give it a try. "Students play independently according to their own level. Through the practice feedback of students at different levels, the difficulties to be solved in this class are brought out, so as to accomplish the teaching objectives of this class better. In this way, the motivation and desire of students' independent inquiry are produced, and at the same time, students really feel that learning mathematics is useful. Solving Problems 《 Mathematics Curriculum Standard 》 points out: "Independent exploration, cooperative communication and hands-on operation are important ways for students to learn mathematics." But this does not exclude teachers' necessary explanation and students' meaningful acceptance. We should not go from the extreme of "cramming" to the other extreme of "not daring to speak". In order to advocate the learning mode of "independent inquiry", independent learning is the premise and foundation of inquiry. In students' inquiry activities, Only when there is a situation that students are at the end of their doubts and there is no way out in their study, teachers should prompt them immediately to give him a feeling of "another village with a bright future". For example, in the class of "recognizing objects", I adopted the form of activity class, so that students can learn while playing in groups and get a preliminary understanding of cuboids, cubes, cylinders and balls. Students prepared many boxes and balls before class. In fact, they perceive these objects in the process of collecting school tools. In class, I first create a situation to meet new friends, and show the objects and plans of cuboids, cubes, cylinders and balls. Let the students help them find their homes and send them home. In the process of helping them find their homes, the students further observe and compare, and cultivate their hands-on operation ability. Then let the students put different cuboids, cubes and cylinders in their hands. What is the difference? And let the students discuss in groups. Before the discussion, the teacher put forward clear requirements: ① Observe carefully. What do you find? (2) Talk about their own ideas in the group. In this way, students can discuss in the group. When teachers patrol, they can learn about the discussion of each group of students, and then let each group push small representatives to express their opinions. Through group discussion, they have some understanding and opinions on why they are different and what is the difference. In this way, students can find out the difference between three-dimensional graphics and plane graphics by their own hands and brains, and realize that plane graphics are one side of three-dimensional graphics. I have a preliminary understanding of plane graphics. Fourth, independent practice and scientific application Although the new curriculum pursues students' active and happy learning, double basics cannot be ignored.