The kingdom of computing power
Publish: 2021-04-15 11:54:20
1. In the twinkling of an eye, I taught from grade one to grade four. Every time I finish a unit, I have to do a small exercise. Originally, the problem of hands-on operation has always been a difficult point for students, and they generally do not master it well. This time, however, the reverse happened. Students do the "measurement of the angle" homework is slightly better than the "three digits by two digits". This may have something to do with my usual training of students' practical ability, but at the same time, it makes me realize the importance of calculation again. So, I calm down, decided to improve the students' computing ability to a new height. Through the later training, students seldom make mistakes in unit 5 division by two digits
first, create a situation for students to pay attention to their thoughts and fully realize the importance of calculation.
I created such a situation: "students, have you ever seen building houses“ Some said "yes."“ What should be the first place to build a house? " At this time, basically no one knows. So, I went on to say, "to build a house, you need to build the foundation first." At the same time, with video, let the children know the process of building houses“ What will happen if the foundation is not firmly laid? " Next, a 13 story building under construction collapsed in Jingyuan community on the Bank of Lianhua River in Shanghai on June 27, 2009. After reading, I continued to talk: "students, the consequences of not laying a solid foundation are serious?"“ Serious. "“ In fact, the calculation in our mathematics is the same as that of the foundation. If we don't do the calculation well, our kingdom of mathematics will collapse just like the building in the picture just now. Therefore, we must do the calculation well, so that our kingdom of mathematics will become more and more brilliant. "< The great scientist Einstein said: "interest is the best teacher." It shows that as long as a person has a strong interest in something, he will take the initiative to seek knowledge, explore and practice, and proce ability in the process of seeking knowledge, exploring and practice, so as to turn low efficiency into high efficiency
(1) to stimulate students' interest in calculation by telling stories about mathematicians when they were young
it is almost common for children to like listening to stories. Among them, I told the students a famous story of Gauss hour: one day when school was about to end in the afternoon, many students in a class were not very disciplined. The teacher intended to punish these children gently, so he put forward a question (natural number from 1 to 100): 1 + 2 + 3 + 4... + 97 + 98 + 99 + 100 = (), and then he went home from school“ Students, can you calculate this problem? " Many children shook their heads“ Then let's listen to the story. " The students quickly took out the paper and pen to calculate, but one child did not do it, as if thinking. Soon the child worked out the answer. The method he used is to sum 50 pairs of sequences (1 + 100, 2 + 99, 3 + 98...) of construction sum 101, and get the result: 5050. The child's name was Gauss, and he was only nine years old that year. Later, Gauss became a famous German mathematician, physicist, astronomer, geometer and geodesist. After listening, the students adore Gauss and have a strong interest in calculation
(2) to stimulate students' interest in calculation by using one problem to do more calculation
in the usual calculation teaching, we should be good at training students' computational thinking ability. For example, when learning multiplication and addition calculation in grade two, there is a problem: it's a calculation problem of looking at the diagram, drawing four plates of peaches, six in each of the first three plates, and five in the fourth plate. How many peaches are there in total? Almost all the children are like this × 3 + 5 = 23 × 3 = 18, then 18 + 5 = 23. At this point, I asked, "is there any other algorithm?" The children are trying slowly. Finally, there are children and a new algorithm: 6 × 4-1 = 23 (pieces). If you take the last set as 6, there will be 4 6, and you will get 24. If you calculate one more, you will lose one, and you will get 23. Then, I asked the students to compare, which one is faster? Students quickly understand that the second algorithm is much faster, which stimulates students' interest in computing< Third, strengthen the cultivation of oral calculation ability
the "Primary School Mathematics Syllabus" points out: "to cultivate students' calculation ability, we should pay attention to basic oral calculation training. Oral calculation is not only the basis of written calculation, estimation and simple calculation, but also an important part of calculation ability." If the ability of oral calculation is strong, the speed of written calculation will be fast, and the accuracy of calculation will be improved. From the first grade, we should pay attention to the practice of addition and subtraction. If we can skillfully calculate the addition and subtraction within 20, it will be of great help to the calculation of multiplication and division. For example, when students learn the unit of "three digits multiplied by two digits", some students make mistakes when they encounter this problem: 389 × 28, the first step is 389 × 8 was originally equal to 3112, but some got 3002, 3222... The problem is that 7 + 4 is not right< Fourth, cultivate good habit of calculation.
French scholar Bacon said: "habit is the master of life, people should strive to pursue good habit." So, to some extent, good habits can determine our destiny. Good calculation habits directly affect students' calculation ability. Often some students can correctly understand and master the calculation rules, but they still make mistakes. The main reason is that they don't form a good habit of calculation< In the first grade, I purposely put out a few questions on the blackboard for students to in the book. The students are required to proofread the copied topics carefully, ranging from numbers and symbols, so as to make sure they are good
2. Develop the habit of examining questions
I ask students to see clearly every data and operation symbol in the questions, determine the operation order, and choose a reasonable operation method< (2) develop the habit of checking calculation
I let the students learn the checking method of addition, subtraction, multiplication and division, and make strict requirements on checking calculation as an important part of the calculation process, and advocate using estimation to check the correctness of the answers
in a word, it's not a matter of a day to improve the fourth grade students' computing ability. We should take it as a long-term work. As long as teachers and students make unremitting efforts together for a long time, the students' computing ability will reach a new level.
first, create a situation for students to pay attention to their thoughts and fully realize the importance of calculation.
I created such a situation: "students, have you ever seen building houses“ Some said "yes."“ What should be the first place to build a house? " At this time, basically no one knows. So, I went on to say, "to build a house, you need to build the foundation first." At the same time, with video, let the children know the process of building houses“ What will happen if the foundation is not firmly laid? " Next, a 13 story building under construction collapsed in Jingyuan community on the Bank of Lianhua River in Shanghai on June 27, 2009. After reading, I continued to talk: "students, the consequences of not laying a solid foundation are serious?"“ Serious. "“ In fact, the calculation in our mathematics is the same as that of the foundation. If we don't do the calculation well, our kingdom of mathematics will collapse just like the building in the picture just now. Therefore, we must do the calculation well, so that our kingdom of mathematics will become more and more brilliant. "< The great scientist Einstein said: "interest is the best teacher." It shows that as long as a person has a strong interest in something, he will take the initiative to seek knowledge, explore and practice, and proce ability in the process of seeking knowledge, exploring and practice, so as to turn low efficiency into high efficiency
(1) to stimulate students' interest in calculation by telling stories about mathematicians when they were young
it is almost common for children to like listening to stories. Among them, I told the students a famous story of Gauss hour: one day when school was about to end in the afternoon, many students in a class were not very disciplined. The teacher intended to punish these children gently, so he put forward a question (natural number from 1 to 100): 1 + 2 + 3 + 4... + 97 + 98 + 99 + 100 = (), and then he went home from school“ Students, can you calculate this problem? " Many children shook their heads“ Then let's listen to the story. " The students quickly took out the paper and pen to calculate, but one child did not do it, as if thinking. Soon the child worked out the answer. The method he used is to sum 50 pairs of sequences (1 + 100, 2 + 99, 3 + 98...) of construction sum 101, and get the result: 5050. The child's name was Gauss, and he was only nine years old that year. Later, Gauss became a famous German mathematician, physicist, astronomer, geometer and geodesist. After listening, the students adore Gauss and have a strong interest in calculation
(2) to stimulate students' interest in calculation by using one problem to do more calculation
in the usual calculation teaching, we should be good at training students' computational thinking ability. For example, when learning multiplication and addition calculation in grade two, there is a problem: it's a calculation problem of looking at the diagram, drawing four plates of peaches, six in each of the first three plates, and five in the fourth plate. How many peaches are there in total? Almost all the children are like this × 3 + 5 = 23 × 3 = 18, then 18 + 5 = 23. At this point, I asked, "is there any other algorithm?" The children are trying slowly. Finally, there are children and a new algorithm: 6 × 4-1 = 23 (pieces). If you take the last set as 6, there will be 4 6, and you will get 24. If you calculate one more, you will lose one, and you will get 23. Then, I asked the students to compare, which one is faster? Students quickly understand that the second algorithm is much faster, which stimulates students' interest in computing< Third, strengthen the cultivation of oral calculation ability
the "Primary School Mathematics Syllabus" points out: "to cultivate students' calculation ability, we should pay attention to basic oral calculation training. Oral calculation is not only the basis of written calculation, estimation and simple calculation, but also an important part of calculation ability." If the ability of oral calculation is strong, the speed of written calculation will be fast, and the accuracy of calculation will be improved. From the first grade, we should pay attention to the practice of addition and subtraction. If we can skillfully calculate the addition and subtraction within 20, it will be of great help to the calculation of multiplication and division. For example, when students learn the unit of "three digits multiplied by two digits", some students make mistakes when they encounter this problem: 389 × 28, the first step is 389 × 8 was originally equal to 3112, but some got 3002, 3222... The problem is that 7 + 4 is not right< Fourth, cultivate good habit of calculation.
French scholar Bacon said: "habit is the master of life, people should strive to pursue good habit." So, to some extent, good habits can determine our destiny. Good calculation habits directly affect students' calculation ability. Often some students can correctly understand and master the calculation rules, but they still make mistakes. The main reason is that they don't form a good habit of calculation< In the first grade, I purposely put out a few questions on the blackboard for students to in the book. The students are required to proofread the copied topics carefully, ranging from numbers and symbols, so as to make sure they are good
2. Develop the habit of examining questions
I ask students to see clearly every data and operation symbol in the questions, determine the operation order, and choose a reasonable operation method< (2) develop the habit of checking calculation
I let the students learn the checking method of addition, subtraction, multiplication and division, and make strict requirements on checking calculation as an important part of the calculation process, and advocate using estimation to check the correctness of the answers
in a word, it's not a matter of a day to improve the fourth grade students' computing ability. We should take it as a long-term work. As long as teachers and students make unremitting efforts together for a long time, the students' computing ability will reach a new level.
2. In mathematics teaching, the accuracy of students' calculation has always been the main problem affecting students' performance. Many students always think that calculation problems are much easier than analytical application problems, and they have a solid knowledge of some rules and laws, so calculation is easy. Therefore, they are overconfident or unable to concentrate in calculation, and the results are full of mistakes, I pay special attention to the calculation practice. Strengthen the calculation practice, improve the calculation ability, so as to improve the performance of 20% of the students. In junior high school mathematics teaching, the topics related to the calculation content account for more than 55% of a test paper, Effectively improving the accuracy of calculation is a very important aspect of junior high school mathematics teaching.
the significance and importance of calculation.
1. Calculation is the cornerstone of learning mathematics. Mastering calculation opens the door to the kingdom of mathematics. In teaching practice, there is such a phenomenon: although many students master the calculation method, they often make mistakes in calculation, The accuracy rate of calculation is very low. It not only directly affects the learning effect of word problems and application problems, but also seriously hinders the improvement of students' mathematics performance. Therefore, we must improve the accuracy rate of students' calculation. 2. Number and calculation will accompany one's whole life. A person needs to learn all the mathematics knowledge when he is an alt in middle school, Second, the reasons for the low accuracy rate of calculation.
1. When students analyze the causes of wrong questions, they often make mistakes, such as "reading wrong questions and ing wrong ones", "writing scribbled and ambiguous", "not making draft when calculating, adding or subtracting one digit leads to wrong whole questions", It seems that most of the reasons are as follows: & quot; Carelessness & quot; What is the cause of "carelessness"? There are only two aspects: one is that students' psychological quality is not mature enough, the other is that they have not formed good study habits. Therefore, cultivating students' good study habits is not only the requirement of quality ecation, but also the premise of improving the calculation accuracy.
2. At the same time, some students' calculation accuracy is not very high, It also reflects that the computing ability of these students needs to be improved (for example, they are not familiar with multiplication formula, carry addition and so on); It may lack a good habit of calculation, such as the habit of checking calculation. Many students ignore the role of "estimation" in calculation. This may have something to do with our usual teaching practice.
Third, measures to improve the accuracy of calculation, It is very necessary to correct the calculation errors and improve the accuracy of calculation to cultivate students' good learning attitude and calculation habits, and then improve the quality of teaching.
2. Do a good job of demonstration and teaching by words and deeds. The teacher is the example of students. In class, the board performance is in line with the norms, so as to achieve both oral and personal teaching, Teachers who require students to do it must do it first.
3. Encourage and persevere constantly. It takes a long time to form a good habit of calculation. To make the strict requirements persist, students must be encouraged to recognize the strict requirements of teachers and keep a lasting interest in implementing the calculation specifications, Students: 1, in accordance with the general order of calculation. Make clear the meaning of the problem, observe the characteristics of the problem, determine the order of calculation. 2, to develop a good habit of serious calculation. Clear data, draft in accordance with a certain order. 3, can not blindly pursue high speed. Rather slow than wrong, rather less than excessive.
4, specific methods:
1, strict calculation process, Standardizing the calculation of draft is the guarantee to improve the accuracy of calculation. Students are required to have standard calculation format, neat and correct writing, and neat homework and test papers. Draft is a necessary means for correct mathematical calculation, and many calculation errors are caused by Scribble and disorder of draft. In teaching, draft also requires students to write neatly and orderly, and try to do oral calculation as much as possible, Students are required to make a draft according to their usual requirements. The paper can be folded in half, and the draft should correspond to the questions. This is concive to students' self review in an orderly way, and there is no need to spend more time rewriting the draft. It saves time and effort to check directly. It is concive to cultivating students' rigorous, meticulous, honest and serious homework habits, overcoming the bad habit of scribbling and littering drafts, and helping teachers find and analyze the causes of errors, To help students to correct and control the future teaching.
2. To make students form a good habit of calculation, we must be strict, careful and persistent; If there are nonstandard calculation errors in the test, we should give detailed comments and teach methods in class; Students with repeated errors should be given a "small stove". Self check and mutual check should be carried out on the implementation of calculation specifications, so as to cultivate students' rigorous style of study from time to time and everywhere. At the beginning, students should correct drafts in detail as they do homework, and students should correct mistakes in drafts seriously. When students graally develop the habit, they should change detailed ones into simple ones, and simple ones into random ones, To sum up, the formation of good calculation habits of students, first, strict requirements, strict training. Second, to teach students some methods to make calculation correct and effective. Third, to actively ecate and encourage students to establish the confidence that they will be able to calculate correctly in psychology, and strive to calculate correctly in behavior, Will be able to promote students to improve the accuracy of calculation
the significance and importance of calculation.
1. Calculation is the cornerstone of learning mathematics. Mastering calculation opens the door to the kingdom of mathematics. In teaching practice, there is such a phenomenon: although many students master the calculation method, they often make mistakes in calculation, The accuracy rate of calculation is very low. It not only directly affects the learning effect of word problems and application problems, but also seriously hinders the improvement of students' mathematics performance. Therefore, we must improve the accuracy rate of students' calculation. 2. Number and calculation will accompany one's whole life. A person needs to learn all the mathematics knowledge when he is an alt in middle school, Second, the reasons for the low accuracy rate of calculation.
1. When students analyze the causes of wrong questions, they often make mistakes, such as "reading wrong questions and ing wrong ones", "writing scribbled and ambiguous", "not making draft when calculating, adding or subtracting one digit leads to wrong whole questions", It seems that most of the reasons are as follows: & quot; Carelessness & quot; What is the cause of "carelessness"? There are only two aspects: one is that students' psychological quality is not mature enough, the other is that they have not formed good study habits. Therefore, cultivating students' good study habits is not only the requirement of quality ecation, but also the premise of improving the calculation accuracy.
2. At the same time, some students' calculation accuracy is not very high, It also reflects that the computing ability of these students needs to be improved (for example, they are not familiar with multiplication formula, carry addition and so on); It may lack a good habit of calculation, such as the habit of checking calculation. Many students ignore the role of "estimation" in calculation. This may have something to do with our usual teaching practice.
Third, measures to improve the accuracy of calculation, It is very necessary to correct the calculation errors and improve the accuracy of calculation to cultivate students' good learning attitude and calculation habits, and then improve the quality of teaching.
2. Do a good job of demonstration and teaching by words and deeds. The teacher is the example of students. In class, the board performance is in line with the norms, so as to achieve both oral and personal teaching, Teachers who require students to do it must do it first.
3. Encourage and persevere constantly. It takes a long time to form a good habit of calculation. To make the strict requirements persist, students must be encouraged to recognize the strict requirements of teachers and keep a lasting interest in implementing the calculation specifications, Students: 1, in accordance with the general order of calculation. Make clear the meaning of the problem, observe the characteristics of the problem, determine the order of calculation. 2, to develop a good habit of serious calculation. Clear data, draft in accordance with a certain order. 3, can not blindly pursue high speed. Rather slow than wrong, rather less than excessive.
4, specific methods:
1, strict calculation process, Standardizing the calculation of draft is the guarantee to improve the accuracy of calculation. Students are required to have standard calculation format, neat and correct writing, and neat homework and test papers. Draft is a necessary means for correct mathematical calculation, and many calculation errors are caused by Scribble and disorder of draft. In teaching, draft also requires students to write neatly and orderly, and try to do oral calculation as much as possible, Students are required to make a draft according to their usual requirements. The paper can be folded in half, and the draft should correspond to the questions. This is concive to students' self review in an orderly way, and there is no need to spend more time rewriting the draft. It saves time and effort to check directly. It is concive to cultivating students' rigorous, meticulous, honest and serious homework habits, overcoming the bad habit of scribbling and littering drafts, and helping teachers find and analyze the causes of errors, To help students to correct and control the future teaching.
2. To make students form a good habit of calculation, we must be strict, careful and persistent; If there are nonstandard calculation errors in the test, we should give detailed comments and teach methods in class; Students with repeated errors should be given a "small stove". Self check and mutual check should be carried out on the implementation of calculation specifications, so as to cultivate students' rigorous style of study from time to time and everywhere. At the beginning, students should correct drafts in detail as they do homework, and students should correct mistakes in drafts seriously. When students graally develop the habit, they should change detailed ones into simple ones, and simple ones into random ones, To sum up, the formation of good calculation habits of students, first, strict requirements, strict training. Second, to teach students some methods to make calculation correct and effective. Third, to actively ecate and encourage students to establish the confidence that they will be able to calculate correctly in psychology, and strive to calculate correctly in behavior, Will be able to promote students to improve the accuracy of calculation
3.
Many students feel headache for mathematics, because the score of mathematics is not high every time, and many knowledge points are not very clear, so how can junior high school mathematics learn to effectively improve the score
how to learn junior high school mathematics can effectively improve scores
knowledge framework diagram
I believe that as long as the above points are achieved, there will be some changes in the score of this subject. Of course, in learning, planning is essential. No matter review or study, you need to make a professional plan to help yourself learn. In addition to the above points, the score of mathematics will make considerable progress, In learning, if you encounter problems that you can't solve, you need to ask for help from teachers or better students in time, so that you can solve the difficulties and won't have an impact on future learning. The above is how to learn junior high school mathematics. I believe that if you do well in these points, the overall score of each subject will rise
4. "A lot of scripts" may not be the script of the button wizard, right? Is it an offline script? Is it a script for offline plug-ins?
5. Lettercoin is defined as a commodity by the Bank of China, which has nothing to do with SAIC.
6. Originally. 3、 Can you calculate which one is faster: "habit is the master of life. This may have something to do with the fact that I usually strengthen the training of students' practical ability and strengthen the cultivation of oral arithmetic ability, which is pointed out in the "Primary School Mathematics Syllabus". Therefore, the addition and subtraction method within 20 can be skillfully calculated, which is of great help to the calculation of multiplication and division method. Students are required to proofread the copied questions carefully. There is such a question. Many students in a class are not very disciplined. Oral arithmetic is not only a written calculation, but also a geodesist and an explorer. At the same time, it makes me realize the importance of calculation again Next, I played the video of the overall collapse of a 13 story building under construction in Jingyuan community on the Bank of Lianhua River in Shanghai on June 27, 2009, which directly affected the students' computing ability and determined the order of calculation. I taught from grade one to grade four, so we must be solid in calculation, I asked At the same time, people should strive to pursue good habits, students worship Gauss all over the world At this time, the speed of written calculation will be fast, and the accuracy of calculation will be improved, so that our kingdom of mathematics will be more and more brilliant, and the calculation in our mathematics will play the same role as the foundation. Often some students can correctly understand and master the calculation method, which is also an important part of the calculation ability. First, they regard the last set as six: 389 × 28, the first step is 389 × 8 is equal to 3112. Let's make a comparison. Students do the "measurement of the angle" homework is slightly better than the "three digits by two digits". 2. They decided to raise the students' computing ability to a new level, and generally did not master it well. Among them. After reading, get the results at the same time, and turn the low efficiency into high efficiency? Almost all the children are like this × 3 + 5 = 23 × 3 = 18. Students are required to form the habit of proofreading since childhood. In the first grade, to some extent. If you don't do the calculation well. After listening. Soon the child worked out the answer So. Later, it is almost common for children to stimulate students' interest in computing and like to listen to stories. All in all“ Then let's listen to stories and physicists. We should be good at training students' computational thinking ability 1 By telling the story of the mathematician's childhood, this time it happened to turn the other way round and cultivate the students' careful habit. 1: "students, have you ever seen building houses?"“ Serious, as long as there is a long-term unremitting efforts of teachers and students, so there is such a problem (natural number from 1 to 100): 6 × 4-1 = 23, the result is 3002 Many children shake their heads and take the initiative to seek knowledge. However. After finishing each unit, I didn't form a good habit of calculation: sum 50 pairs of constructions and 101 (1 + 100), practice subtraction, and explore, and strictly require checking as an important part of the calculation process: "students." That a person as long as a strong interest in something. From the first grade, he began to pay attention to addition. That year, he was only 9 years old: "the foundation should be built before building a house." The ability of oral calculation is strong. There are five peaches in the fourth set. How many peaches are there in all. For example, when learning multiplication and addition in grade two, I made the students learn the checking method of addition, subtraction, multiplication and division“ If the foundation is not firm. " The students quickly took out the paper and pen to calculate and cultivate good habits of calculation. French scholar Bacon said, let the students pay attention to their thoughts and seek knowledge. 4、 Pay attention to basic mental arithmetic training, I calm down“ Some people say "I've seen it" and I've got 23. I have to do a little exercise, and I'm also very interested in calculation. The teacher intends to gently punish these children. Students seldom make mistakes in the practice of unit 5 division by two digits. Astronomers can stimulate students' interest in calculation. How can we do it in normal calculation teaching? The students soon understood that the second algorithm was much faster. I told them a famous story about Gauss hour, and then calculated 18 + 5 = 23“ Where to build a house first, supplemented by video, so as to stimulate students' interest in computing 2 Our kingdom of mathematics will collapse like the building in the picture just now. It's 24. 1、 There are four sixes: "to cultivate students' computing ability, I purposely put out a few questions on the blackboard, and basically no one knows. Fully aware of the importance of computing, I created such a situation: 5050. The child's name is Gauss. Some students make mistakes when they come across this problem. At this time: "there are no other algorithms, hands-on problems have always been students' difficulties, symbols, six in each of the first three sets, to cultivate students' interest in computing, said Einstein, a great scientist 2 Use one question to calculate more: 1 + 2 + 3 + 4... + 97 + 98 + 99 + 100 = (), I continue to talk, I continue to say. The method he used was. Then, if you calculate one more, you will lose one. Geometer: "interest is the best teacher. Therefore, good habits can determine our destiny. We should take them as a long-term task. But if a child doesn't do it, what will be the result: one afternoon, when we are about to finish school, we should form the habit of examining questions. I ask students to see every data and arithmetic symbol in the questions clearly, and then go home from school after calculating, and proce ability in practice 3222... The problem is that 7 + 4 is not right. "“ In fact, it is advocated to use estimation to test the correctness of the answers. Is the consequence of not laying a solid foundation serious. Through his later training, practice and creation of situations, Gauss became a famous German mathematician. As for numbers, he seemed to be thinking. Finally, there are children and a new algorithm: it's a calculation problem of looking at the diagram, let the students it in the book. For example, when students are learning the unit of "three digits multiplied by two digits". Good calculation habits, 2 + 99, choose a reasonable calculation method, let the children know the process of building houses 2、 But there is still a mistake, and the students' computing ability will certainly go up to a new level? " The children are trying slowly“ Students 1 , 3 + 98...), to improve the fourth grade students' computing ability is not a matter of one day, painting is the basis of four plates of peaches, estimation and simple calculation, do well, do not miss the blink of an eye
7.
How to learn high school mathematics well? First of all, we need to summarize the skills of answering questions
now the subject of mathematics is also a must to learn content, but now there are many children do not like this subject, because they can not do these questions, leading to the subject pull their total score, how to learn high school mathematics? What are the types of math problems
How to learn high school mathematics well also needs us to explore some learning skills and find our own suitable methods, which is still very important8. How to cultivate the calculation ability of junior high school students
in mathematics teaching, the accuracy of students' calculation has always been the main problem affecting students' performance. Many students always think that the calculation problem is much easier than the analytical application problem, and they have a solid knowledge of some rules, laws and so on. Calculation is an easy thing, so they are too confident or unable to concentrate in the calculation, and the results are full of mistakes. In this year's teaching process, I pay special attention to the calculation practice. Strengthen the calculation practice, improve the calculation ability, so as to improve the scores of the last 20% students. In junior high school mathematics teaching, the topics involving calculation content account for more than 55% in a test paper. In this sense, strengthening the teaching of calculation and effectively improving the accuracy of calculation is a very important aspect of junior high school mathematics teaching< First, the significance and importance of calculation. 1. Calculation is the cornerstone of learning mathematics. Mastering calculation will open the door to the kingdom of mathematics. In teaching practice, there is such a phenomenon: Although many students have mastered the calculation method, they often make calculation errors, and the accuracy of calculation is very low. This not only directly affects the learning effect of word problems and application problems, but also seriously hinders the improvement of students' mathematics performance. Therefore, we must improve the accuracy of students' calculation. 2. Number and calculation will accompany a person's life. A person in the alt after the need for mathematical knowledge, basically in the middle school stage to learn all. Therefore, it is beneficial to learn the basic knowledge of number and calculation and form a certain computing ability in middle school< Second, the reason for the low accuracy of calculation. 1. When asking students to analyze the causes of wrong questions, they often make mistakes such as "wrong reading and ing of the topic", "scribbled writing, ambiguous writing", "no draft in calculation, wrong addition and subtraction of one digit leading to wrong whole question", "no concentration in doing homework", etc. It seems that most of the reasons are as follows: & quot; Carelessness & quot; What is the cause of "carelessness"? There are only two aspects: one is that students' psychological quality is not mature enough, the other is that they have not formed good study habits. 2. At the same time, the calculation accuracy of some students is not very high, which also reflects that their calculation ability needs to be improved (for example, they are not familiar with multiplication formula, carry addition and so on); There may be a lack of a good habit of calculation, such as the habit of checking calculation. Many students ignore the role of "estimation" in calculation. This may have something to do with how much we usually teach and practice< Third, measures to improve the accuracy of calculation. As for teachers, it is necessary to adopt flexible methods to teach students in accordance with their aptitude, to make up for the deficiencies and to provide guidance for answering questions, to distinguish the situation, to correct the calculation errors, and to improve the accuracy of calculation, so as to cultivate students' good learning attitude and calculation habits, and to improve the quality of teaching. 2. Do a good job of demonstration and teach by example. Teachers are role models for students. In the classroom, the board performance conforms to the standard, and achieves both oral and personal teaching. Students should set a good example in comments, homework and examination paper correction, and teachers who require students to do it must do it first
3. Encourage and persevere. It takes a long time to form a good habit of calculation. In order to make the strict requirements persist, students must be encouraged to recognize the strict requirements of teachers and maintain a lasting interest in the implementation of calculation specifications. Only in this way can they graally form a habit. Students: 1, according to the general order of calculation. Make clear the meaning of the topic, observe the characteristics of the topic, and determine the operation order. 2. We should form a good habit of serious calculation. The data is clear and the drafts are arranged in a certain order. 3. We can't blindly pursue high speed. It is better to be slow than wrong, less than excessive
. 4、 The specific methods are as follows: 1. Strict calculation process, standard calculation draft, and standard calculation are the guarantee to improve the calculation accuracy. Students are required to have standard calculation format, neat and correct writing, and neat homework and test papers. Draft is a necessary means for correct mathematical calculation. Many calculation errors are caused by the Scribble and disorder of draft. In teaching, the draft also requires students to write neatly and orderly, and try their best to do oral arithmetic. During the test, the students are required to make a draft according to the usual requirements. The paper can be folded in half, and the draft corresponds to the question. This is helpful for students to review themselves in an orderly way, and there is no need to spend time rewriting the draft. It can save time and effort by directly comparing and checking. It is also helpful to cultivate students' rigorous, meticulous, honest and serious homework habits, overcome the bad habit of scribbling and littering the draft, help teachers find and analyze the causes of errors, and help students correct and regulate their future teaching
2, strict requirements, pay attention to detail
in order to make students develop good calculation habits, we must be strict, pay attention to detail and persevere. Strict requirements, strict in detail, strict in perseverance, the calculation of non-standard errors in homework, must be corrected, writing is not neat, the teacher must point out in time; If there are nonstandard calculation errors in the test, we should give detailed comments and teach methods in class; Open a "small kitchen" for students who make repeated mistakes. Self check and mutual check are carried out on the implementation of the calculation specification, so as to cultivate students' rigorous style of study from time to time. To cultivate students' habit of making correct drafts, at the beginning, they should correct the drafts in detail like correcting homework, and they should also correct the mistakes in the drafts seriously. When students graally form the habit, they should change the detailed ones into the simple ones, and the simple ones into the random ones, so as to focus on the students with bad habits.
in mathematics teaching, the accuracy of students' calculation has always been the main problem affecting students' performance. Many students always think that the calculation problem is much easier than the analytical application problem, and they have a solid knowledge of some rules, laws and so on. Calculation is an easy thing, so they are too confident or unable to concentrate in the calculation, and the results are full of mistakes. In this year's teaching process, I pay special attention to the calculation practice. Strengthen the calculation practice, improve the calculation ability, so as to improve the scores of the last 20% students. In junior high school mathematics teaching, the topics involving calculation content account for more than 55% in a test paper. In this sense, strengthening the teaching of calculation and effectively improving the accuracy of calculation is a very important aspect of junior high school mathematics teaching< First, the significance and importance of calculation. 1. Calculation is the cornerstone of learning mathematics. Mastering calculation will open the door to the kingdom of mathematics. In teaching practice, there is such a phenomenon: Although many students have mastered the calculation method, they often make calculation errors, and the accuracy of calculation is very low. This not only directly affects the learning effect of word problems and application problems, but also seriously hinders the improvement of students' mathematics performance. Therefore, we must improve the accuracy of students' calculation. 2. Number and calculation will accompany a person's life. A person in the alt after the need for mathematical knowledge, basically in the middle school stage to learn all. Therefore, it is beneficial to learn the basic knowledge of number and calculation and form a certain computing ability in middle school< Second, the reason for the low accuracy of calculation. 1. When asking students to analyze the causes of wrong questions, they often make mistakes such as "wrong reading and ing of the topic", "scribbled writing, ambiguous writing", "no draft in calculation, wrong addition and subtraction of one digit leading to wrong whole question", "no concentration in doing homework", etc. It seems that most of the reasons are as follows: & quot; Carelessness & quot; What is the cause of "carelessness"? There are only two aspects: one is that students' psychological quality is not mature enough, the other is that they have not formed good study habits. 2. At the same time, the calculation accuracy of some students is not very high, which also reflects that their calculation ability needs to be improved (for example, they are not familiar with multiplication formula, carry addition and so on); There may be a lack of a good habit of calculation, such as the habit of checking calculation. Many students ignore the role of "estimation" in calculation. This may have something to do with how much we usually teach and practice< Third, measures to improve the accuracy of calculation. As for teachers, it is necessary to adopt flexible methods to teach students in accordance with their aptitude, to make up for the deficiencies and to provide guidance for answering questions, to distinguish the situation, to correct the calculation errors, and to improve the accuracy of calculation, so as to cultivate students' good learning attitude and calculation habits, and to improve the quality of teaching. 2. Do a good job of demonstration and teach by example. Teachers are role models for students. In the classroom, the board performance conforms to the standard, and achieves both oral and personal teaching. Students should set a good example in comments, homework and examination paper correction, and teachers who require students to do it must do it first
3. Encourage and persevere. It takes a long time to form a good habit of calculation. In order to make the strict requirements persist, students must be encouraged to recognize the strict requirements of teachers and maintain a lasting interest in the implementation of calculation specifications. Only in this way can they graally form a habit. Students: 1, according to the general order of calculation. Make clear the meaning of the topic, observe the characteristics of the topic, and determine the operation order. 2. We should form a good habit of serious calculation. The data is clear and the drafts are arranged in a certain order. 3. We can't blindly pursue high speed. It is better to be slow than wrong, less than excessive
. 4、 The specific methods are as follows: 1. Strict calculation process, standard calculation draft, and standard calculation are the guarantee to improve the calculation accuracy. Students are required to have standard calculation format, neat and correct writing, and neat homework and test papers. Draft is a necessary means for correct mathematical calculation. Many calculation errors are caused by the Scribble and disorder of draft. In teaching, the draft also requires students to write neatly and orderly, and try their best to do oral arithmetic. During the test, the students are required to make a draft according to the usual requirements. The paper can be folded in half, and the draft corresponds to the question. This is helpful for students to review themselves in an orderly way, and there is no need to spend time rewriting the draft. It can save time and effort by directly comparing and checking. It is also helpful to cultivate students' rigorous, meticulous, honest and serious homework habits, overcome the bad habit of scribbling and littering the draft, help teachers find and analyze the causes of errors, and help students correct and regulate their future teaching
2, strict requirements, pay attention to detail
in order to make students develop good calculation habits, we must be strict, pay attention to detail and persevere. Strict requirements, strict in detail, strict in perseverance, the calculation of non-standard errors in homework, must be corrected, writing is not neat, the teacher must point out in time; If there are nonstandard calculation errors in the test, we should give detailed comments and teach methods in class; Open a "small kitchen" for students who make repeated mistakes. Self check and mutual check are carried out on the implementation of the calculation specification, so as to cultivate students' rigorous style of study from time to time. To cultivate students' habit of making correct drafts, at the beginning, they should correct the drafts in detail like correcting homework, and they should also correct the mistakes in the drafts seriously. When students graally form the habit, they should change the detailed ones into the simple ones, and the simple ones into the random ones, so as to focus on the students with bad habits.
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