Breakthrough in computing power

1. 1、 Background of the project
1. To cultivate students' computing ability is an important task of primary school mathematics teaching and an important foundation for students to learn mathematics in the future. According to the quality analysis of usual testing and final examination, students' computing ability is generally low, which undoubtedly causes great obstacles to students' learning and development. In order to quickly and effectively improve students' computing ability, better develop students' thinking, and improve the quality of mathematics teaching in a large area, it is necessary to strengthen the teaching of calculation as a breakthrough in primary school mathematics teaching
2. Through the research of this topic, we should strive to improve students' computing ability, cultivate their oral, mental and written abilities, and encourage students to graally like mathematics and become interested in calculation in lively and relaxed learning. So as to improve students' academic performance and lay a solid foundation for students' future study< Second, the goal of the research is to find out the reasons for the slow speed and low accuracy of students' mathematical calculation< Looking for teaching breakthrough and teaching training methods that can improve students' mathematical calculation speed and accuracy: (1) strengthen students' oral calculation training by taking oral calculation ability training as a breakthrough 2) Control a certain amount of training to cultivate students' sense of number 3) While paying attention to the training of students' thinking ability, we should pay attention to the training of students' mathematical calculation, grasp the basis, highlight the pertinence, find the regularity, and properly integrate< Third, research measures
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"in order to cultivate students' computational ability, we should pay attention to the basic training of oral arithmetic, insist on regular practice, and graally achieve proficiency." This is the requirement of mathematics curriculum standard. In the process of teaching, we should organize teaching and training in a planned, step-by-step and purposeful way, such as listening to arithmetic, reading cards and oral arithmetic, reading questions and calculating silently, and repeatedly emphasize that the first is correct and then fast
2. Strengthen basic knowledge and improve written calculation ability
in calculation teaching, oral calculation is the basis of written calculation, while written calculation is the key. Written calculation plays an extremely important role in primary school mathematics teaching. No matter how advanced the technology is in the future, the ability of written calculation is always a necessary ability for primary school students
(1) to enable students to understand the basic knowledge of mathematics and master skills is the primary condition for the formation of computational ability
each calculation is based on the corresponding concepts, rules, properties, formulas and other basic knowledge. If students don't understand these basic knowledge correctly and master them thoroughly, they can't calculate. Only after students understand and master the relevant operation properties, laws and skills, can they apply these knowledge in specific calculation to seek simple and reasonable methods, improve the accuracy of calculation and speed up calculation
(2) strengthening practice and skill training is the key to the formation of students' computing ability
for example, in the calculation of four items of scores, some students often encounter the situation that the calculation method is correct but the calculation result is wrong. The reason for the error lies in the basic skills such as score rection, general score or mutualization; Another example is the division of decimals, especially when the divisor is a decimal. The mistake is that when the divisor becomes an integer, the divisor does not expand the same multiple at the same time, resulting in a wrong quotient. So we should strengthen the training of basic calculation skills in calculation practice
(3) memorize common data to improve the calculation speed
in the four arithmetic operations, if students memorize some common data, it will not only help students to achieve the requirements of "correct and rapid", but also help them master the skills of calculation. For example: special data with sum and proct of whole hundred and thousand (for example: 75 + 25 = 100 + 25) × 4=100 125 × 8=1000 The proct of the approximate value of PI 3.14 with one digit and the proct with several common numbers 12, 15, 16, 25 and 36; The denominator is the decimal value of the simplest fraction of 2, 4, 5, 8, 10, 16, 20 and 25, that is, the interaction of these fractions and decimals
the results of the above numbers, whether in daily work or in real life, are used very frequently. After mastering and remembering them, they can be transformed into abilities and proce high efficiency in calculation
3
after mastering the calculation method, students tend to deal with the boring calculation, resulting in more calculation errors. At this time, the proper development of some computing competition activities, often can better mobilize the students' learning initiative, improve the interest in computing, and achieve the purpose of improving the accuracy of computing. This semester, I plan to carry out two calculation competitions in the class, in order to improve the students' interest in calculation and improve the accuracy of calculation. After the competition, pay attention to sort out the students' mistakes, analyze and classify them, and then make targeted remedies, so as to clear the obstacles for improving the students' computing ability
4. Encourage students to have a pleasant learning experience
teachers should encourage students to make mistakes e to carelessness. In the usual homework correction, we should affirm its strengths, enhance self-confidence, put forward ardent hope, and urge it to correct its shortcomings< 5. Expected effect
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2. Cultivate students to participate in the derivation of rules and formulas, and truly clarify the calculation
3. Help students memorize common data and improve the calculation speed
4. Pay attention to the analysis of wrong cases and suit the right medicine to the case
5. Cultivate students' habit of checking calculation consciously and correcting mistakes independently
6. Cultivate students' habit of summarizing and reflecting.

2.

The E-Class prototype of tianhe-3, a new generation of 10 billion times supercomputer independently developed by China, has recently completed the development and deployment, and successfully passed the sub item acceptance. The prototype system adopts three kinds of domestic independent high-performance computing and communication chips, and the computing speed of its six cabinets is equivalent to the computing power of 120 cabinets of Tianhe-1

When it comes to domestic chips, Chinese people first think that it must be Loongson. Loongson is not the earliest domestic processor, nor the most successful domestic processor. However, when it comes to domestic chips with the highest exposure rate, Loongson undoubtedly has developed three generations of Loongson processor chips from Loongson 1 to Loongson 3, But most of them only live in the exhibition stands where CAS shows its achievements to the outside world. There are almost no commercial applications, and they can't keep up with the mainstream performance. Often, new models of chips fall behind as soon as they come out. Although Shenwei and Feiteng both belong to the national team, the latter two are still in the first echelon of the national chip team. Although Loongson is famous, it has no chance with the first echelon

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even if it's a small business, you should have channels to know when the big business is going to speculate and when it's going to jump, so you can take risks

4. Compared with the old textbook, the amount of calculation practice in the new textbook has been greatly reced, and the difficulty has also been reced a lot. However, I feel that the students' computational ability has dropped a lot compared with the previous students, the computational ability is poor, the computational speed is slow, and the computational error rate is high! To this end, I think the following measures should be taken:
first, adhere to the practice of oral arithmetic, often unremitting
"in order to cultivate students' computational ability, we should pay attention to the basic training of oral arithmetic, insist on regular practice, and graally achieve proficiency." This is the requirement of mathematics curriculum standard. In my teaching, I organized teaching and training in a planned, step-by-step and purposeful way, such as listening to arithmetic, reading cards and oral arithmetic, reading questions and calculating silently, and repeatedly emphasized that the first is correct and then fast< Second, strengthen the basic knowledge and improve the ability of written calculation
in calculation teaching, oral calculation is the basis of written calculation, while written calculation is the key. Written calculation plays an extremely important role in primary school mathematics teaching. No matter how advanced the technology is in the future, the ability of written calculation is always a necessary ability for primary school students
1. To enable students to understand the basic knowledge of mathematics and master skills is the primary condition for the formation of computational ability
each calculation is based on the corresponding concepts, rules, properties, formulas and other basic knowledge. If students don't understand these basic knowledge correctly and master them thoroughly, they can't calculate. Only after students understand and master the relevant operation properties, laws and skills, can they apply these knowledge in specific calculation to seek simple and reasonable methods, improve the accuracy of calculation and speed up calculation
2. Strengthening practice and skill training is the key to the formation of students' computing ability
for example, in the calculation of four items of scores, some students often encounter the situation that the calculation method is correct but the calculation result is wrong. The reason for the error lies in the basic skills such as score rection, general score or mutualization; Another example is the division of decimals, especially when the divisor is a decimal. The mistake is that when the divisor becomes an integer, the divisor does not expand the same multiple at the same time, resulting in a wrong quotient. So we should strengthen the training of basic calculation skills in calculation practice
3. Memorize common data to improve calculation speed
in the four arithmetic operations, if students memorize some common data, it will not only help students to achieve the requirements of "correct and rapid", but also help them master the skills of calculation. For example: special data with sum and proct of whole hundred and thousand (for example: 75 + 25 = 100 + 25) × 4=100 125 × 8=1000 The proct of the approximate value of PI 3.14 with one digit and the proct with several common numbers 12, 15, 16, 25 and 36; The denominator is the decimal value of the simplest fraction of 2, 4, 5, 8, 10, 16, 20 and 25, that is, the interaction of these fractions and decimals
the results of the above numbers, whether in daily work or in real life, are used very frequently. After mastering and remembering them, they can be transformed into abilities and proce high efficiency in calculation
Third, carry out computing competitions
after mastering the calculation method, students tend to deal with the boring calculation, resulting in more calculation errors. At this time, the proper development of some computing competition activities, often can better mobilize the students' learning initiative, improve the interest in computing, and achieve the purpose of improving the accuracy of computing. This semester, I plan to carry out two calculation competitions in the class, in order to improve the students' interest in calculation and improve the accuracy of calculation. After the competition, pay attention to sort out the students' mistakes, analyze and classify them, and then make targeted remedies, so as to clear the obstacles for improving the students' computing ability
Fourth, encourage students to enhance the experience of happy learning
teachers should encourage students to make mistakes e to carelessness. In the usual homework correction, we should affirm its strengths, enhance self-confidence, put forward ardent hope, and urge it to correct its shortcomings.

5. How to effectively improve the calculation ability of the fourth grade primary school students, better develop their thinking, make their calculation accurate and fast, so as to achieve the proficiency required in the new curriculum standards, and make the calculation method reasonable and flexible? Now I would like to talk about some superficial views< In the first semester of the fourth grade, students are required to be proficient in oral arithmetic, one digit multiplied by two digits, several hundred tens multiplied by one digit; Divide the whole ten by the whole ten, and divide the whole ten by several hundred tens; Be able to calculate three digit by two digit correctly; Divisor is a two digit number, and quotient is a written calculation of one or two digits; Three digit multiplication and division of two digit estimation. In the next semester, students are required to correctly perform four mixed operations, learn some operation laws and properties, and accumulate some simple calculation skills. It can be seen that only deep drilling teaching materials, clear focus of calculation teaching, can have a definite aim
Second, from the growth point of new and old knowledge, guide students to clear the calculation theory
as we all know, students have clear calculation theory and algorithm in the process of learning calculation, so that the diversity of calculation has a foundation. Therefore, in the process of calculation teaching, we should help students to understand the calculation theory thoroughly and grasp the algorithm correctly. To achieve this, the best way is to let students acquire new knowledge independently, which requires our teachers to make a breakthrough from the growth point of new and old knowledge. Students who have just entered the fourth grade can only skillfully calculate one digit multiplied by many digits in writing. On this basis, when teaching the oral calculation of two digit multiplied by one digit, hundreds of tens of digits multiplied by one digit, and the written calculation and estimation of two digit division, if we start from the growth point of new and old knowledge, let students try to analogy on the basis of existing knowledge, and then discuss in groups, And then reach a consensus in the class communication, students not only master the calculation theory of oral calculation, estimation and written calculation, but also experience the diversification of algorithms in the dispute< Third, lay a solid foundation to form computing skills
the strength of primary school students' computing ability is based on the learning activities of basic knowledge, which can only be formed through strict and systematic training. Therefore, first of all, we should pay attention to basic teaching, guide students to pass the basic knowledge, and lay the foundation for the improvement of computing ability. The calculation teaching of the fourth grade is no exception
in order to make the fourth grade students proficient in oral arithmetic and blurt it out, it needs to be completed in stages:
(1) after teaching "double digit by one digit" and "several hundred dozens", I asked the students to write the oral arithmetic of "double digit by one digit" every day, that is, 11 × 2，11 × 3... Practice until 50 × 9, and then come back to practice, review three or four rounds in a row, and strive to make the whole class master the oral arithmetic of multiplying two digits by one digit within 50, which not only lays a solid foundation, but also lays a foundation for the follow-up study of the written division of divisor which is two digits, and the learning of approximate score in the fifth grade
(2) master the oral arithmetic of multiplying the first three numbers of 50-59 by one digit. That is 50 × 2、50 × 3... Students have mastered these commonly used multiplication calculation, and they have reached a higher level in both calculation speed and accuracy
(3) after learning how to divide the whole ten by the whole ten and divide the whole ten by several hundred tens, practice the oral arithmetic of dividing the whole ten by the whole ten for 3-5 minutes before class every day. Such as 140 ÷ 70、143 ÷ In order to train the fourth grade students to calculate the speed of division
(4) use the change law, operation law and property of proct quotient to calculate simply
such as 32 × 25=32 ÷ 4 × twenty-five × 4) = 800, etc. After a long period of training, students' computing skills will increase with each passing day
(5) calculation exercises focus on comparison
in calculation, students are prone to make mistakes e to the influence of stereotyped thinking when they first look at some similar topics. Therefore, for such similar topics, we must strengthen comparative exercises, so that students can clearly understand the differences between the two in practice comparison, so as to attract attention in thought, Attention should be paid to the calculation to improve the accuracy of calculation. For example, 25 × 4 = 100 is the most error prone topic in students' calculation. After analysis and comparison, students will have a deeper understanding, which will rece the occurrence of similar errors in future calculation< Good study habits are the guarantee to improve the calculation accuracy of the fourth grade students. It is also necessary to pay attention to their habits while cultivating their calculation ability
1. Cultivate the habit of serious examination. When examining the topic, it is required to have a look, two pictures, three thoughts, four calculations and five checks. At first glance, we can see clearly the numbers and operational symbols in the Chu title; The second is to mark which step to calculate first and which step to calculate later on the test questions; Third, think about where to use oral calculation, where to use written calculation, and whether to use simple calculation; The fourth calculation is to calculate carefully; The fifth inspection means serious inspection
2. Cultivate the habit of serious practice. In the four operations, it is necessary to train students' calm and calm learning attitude. When encountering the calculation questions with large numbers and many steps, we should not be impatient, not impatient, think calmly and calculate patiently. Even if it is a simple calculation problem, we should be careful and not act rashly. If you can do it orally, you should do it in writing. When calculating, the writing should be neat, the format should be standard and the method should be reasonable. At the same time, strengthen the students' habit of making drafts to ensure accurate calculation
3. Cultivate the habit of careful examination. It is impossible for students to make no mistakes in their calculations. At ordinary times, we should ecate students to form the habit of serious exercise after calculation, and take the examination as an indispensable part of the calculation. When checking, we should be patient and careful, and check step by step: first, check whether the number in the title is copied wrong, second, check whether the calculation result is wrong, and correct the mistakes in time
in a word, to improve the fourth grade students' computing ability, we need to use our brains frequently, do more experiments, try our best to find scientific training objectives, and improve the effectiveness.

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7. Computational ability is a basic mathematical ability. It is an important task of primary school mathematics teaching to cultivate primary school students' computational ability. In recent years, it is not difficult to find that the phenomenon of students losing points e to calculation errors is more and more serious. The calculation ability of primary school students has a downward trend compared with the past. As a math teacher, we should consciously cultivate students' computing ability in the usual teaching< First, we should pay attention to the basic knowledge of mathematics. In order to get the calculation results, we should first consider what mathematical concepts, operation laws, operation properties, operation rules and calculation formulas to use. Therefore, it is the premise for students to fully understand and master these basic knowledge. Some students make mistakes in the calculation in the exam, not because they can't really calculate, but because the operation law or the operation law is not clear, resulting in calculation errors. Only when the relevant basic knowledge is explained clearly and the students really master it, the students will not make mistakes in calculation

if students are calculating 125 × At 28:00, many students do this: 125 × 28=125 × 20+8=125 × 20 + 125 = 2500 + 125 = 2625. But in the calculation, e to the wrong use of the multiplication allocation law, the final calculation result is wrong. Just imagine, when our teacher teaches the law of distribution by multiplication, if he can let the students really understand the essence of the law and know that the law is to multiply the sum of two numbers by the third number into the sum of these two numbers multiplied by the third number, the students will not make the above mistakes in calculation

especially when the students reach the senior grade, their basic knowledge of mathematics has been very rich. Therefore, they should not be in a hurry to achieve success in teaching, but should help the students learn to sort out the basic knowledge they have learned and use it flexibly when doing problems< Second, strengthen the training of basic skills

as the saying goes, "the fist never leaves the hand, the tune never leaves the mouth", it is also the truth to improve students' computing ability. In the usual teaching, teachers should strengthen the training of students' computing ability and correct some errors in the calculation in time. Only when we practice more at ordinary times can we improve the accuracy of students' calculation. Otherwise, students will make mistakes in calculation. For example: in the calculation of 3.5 × At 20:00, some students answered 3.5 × 2, get 7, forget the "0" at the end of "20". The other answer is 35 × 20 = 700, no attention to the decimal point in 3.5. All these are caused by insufficient practice. In the calculation practice, strengthening the basic skills training is an important link to improve the calculation ability. For example, when calculating the four operations of decimal and fraction, we often encounter that the students' algorithm is correct but the result is wrong. The reasons include the errors of approximate score and general score, the errors of mutual conversion, and the problems of oral calculation within 100. All these reflect the defects of students' basic skills. Therefore, in the practice, we should pay more attention. Strengthen the training of basic skills

in addition, helping students summarize some regular things can greatly improve their computing skills. For example: the mixed operation of fraction and decimal addition and subtraction, generally speaking, it is relatively simple to calculate with decimal, but judging whether all fractions can be converted into finite decimal has become the key point of this kind of calculation. With the breakthrough of this key point, students' operation speed will be accelerated, and their calculation skills will also be improved

thirdly, cultivate good calculation habits, which is a reliable guarantee for students to calculate correctly. In teaching, we can often find that many students make mistakes in calculation, not because they do not understand the calculation theory correctly, nor do they master the calculation method, but because they do not have a good calculation habit. Therefore, it is particularly important to cultivate students to develop a good calculation habit. I think we should develop the following habits:

see clearly. Because students look at the topic too fast, sometimes they will read the number wrong, such as 234 as 243, sometimes they will read the operation symbols wrong, upside down and so on. Therefore, we should let students form the habit of reading the number in the topic clearly, not too fast, but memorize the whole, not reading one by one, and can quickly compare with the original number after writing, and so on, So as to rece the calculation error caused by misreading

write neatly. Nonstandard writing is also a common reason for calculation errors. When students are calculating, they sometimes look at it by mistake because of the illegible handwriting, such as 6 and 0, 1 and 7, 3 and 8; Some write, write, erase, and blur; Some vertical writing is not standard, the number is not aligned and so on, may cause the calculation error. Therefore, in teaching, it is necessary to require students to write neat, standard format, to urge students to write numbers correctly and clearly. Pay attention to this point, and the errors in the calculation will be reced a lot

careful calculation. Sometimes mistakes in calculation are also caused by students' careless calculation × 3 becomes 5, or carry forgets to add, or abdicate forgets to subtract, and so on. Therefore, in teaching, do not blindly require students to calculate fast, but first to calculate correctly, and then put forward the corresponding speed requirements on the basis of the correct, which can also improve the accuracy of students' calculation

check carefully. Checking and checking calculation is not only an effective measure to ensure correct calculation, but also a means to promote students' understanding of calculation process and calculation skills. Students can further understand the inverse operation relationship between addition and subtraction, multiplication and division through checking calculation. However, e to weak willpower, pupils can not consciously adhere to the inspection and checking, perfunctorily look around, and do not carry out the inspection and checking in the real sense. Therefore, in teaching, we should pay attention to teaching students the methods of checking and checking calculation (such as inverse calculation, estimation, recalculation, etc.), and supervise them to form the habit of checking. In addition, we can also let students who have checked out mistakes and got good results give their own experience at the right time, so that students can fully feel the success brought by careful checking and checking calculation, Consciously develop the habit of active checking

in short, the improvement of students' computing ability is not an overnight thing. In normal teaching, teachers should start from the characteristics of teaching materials, from the reality of students, from the psychological characteristics of children, contact real life, contact game activities, and integrate multimedia, so as to create a teaching environment full of children's interest The dynamic learning environment makes the boring computing teaching radiate new vitality.

8. First, according to the "mathematics curriculum standards" to develop students' computing ability training target system, explore effective methods and ways to improve students' computing ability in classroom teaching. Through the research on the methods and ways of cultivating mathematics classroom computing ability under the background of PEP experimental teaching materials, we can effectively improve students' mathematical computing ability, enhance students' mathematical literacy and efficiency, promote students' all-round development, and adapt to the development needs of the future society. The second is based on the research status of the same subject at home and abroad and the basic content, research focus and difficulties of this subject. Through the construction of methods and ways to implement mathematics classroom computing ability training mode, to expand the front-line experimental teachers how to cultivate primary school students' computing ability in classroom teaching methods and ways to provide a paradigm. Through the in-depth study of this topic, I try to explore the theory and practice, and take this as the entry point to explore more effective methods to improve students' computing ability, so as to make a breakthrough in the diversified choice of my teaching methods and the improvement of students' ability. Combined with the practice of students, we should take corresponding teaching strategies to improve the efficiency of computing teaching, give full play to the function of computing teaching to promote the development of students, so as to promote the overall development of students' comprehensive quality
how to make students understand the causes of common errors in calculation, and through the implementation of new methods and strategies, enable students to correctly carry out the four operations of integer, decimal and fraction. Students are required to be correct and proficient in the calculation process, and the calculation method is reasonable, flexible and innovative. Mastering scientific learning methods and forming flexible computing skills and habits are the ultimate starting point of my research.

9.

Do you know what is the most important thing in learning mathematics

when learning mathematics in junior high school, many students are worried, because this course is very difficult, and there are many difficulties. Many students can get better at the beginning of learning, but after a period of time, they will become very difficult, so do you know what is the treasure of junior high school mathematics? Let's get to know

review knowledge points

the above is the content of junior high school mathematics dictionary. When learning hard, you can review the previous content first. Of course, remember the notes before this time can be used to review, which can better help us learn the later content and improve the problem of learning hard

10. 1、 Definition of problem
the level of students' computational ability directly affects the quality of their learning, because improving students' computational ability has become one of the important problems to be studied in primary school mathematics teaching. In order to effectively improve the calculation ability of primary school students, it is necessary to take a variety of measures and methods< According to the "nine-year compulsory ecation full-time primary school mathematics syllabus", students should have the ability to calculate integers, decimals and fractions through teaching In the teaching requirements, it is also emphasized that "to enable students to correctly calculate the four items of integers, decimals and fractions, and to write the basic calculation among them, we should reach a certain degree of proficiency, and graally make the calculation method reasonable and flexible." In 2000, the national full-time compulsory ecation "mathematics curriculum standard" also made the following requirements for students' calculation ability: "understand the meaning of number and operation, master the basic operation of number", "attach importance to oral calculation, strengthen estimation, advocate algorithm diversification, graally form calculation skills, and be able to comprehensively use the knowledge and skills to solve practical problems."
calculation accounts for a large proportion in primary school mathematics textbooks, and the level of students' calculation ability directly affects the quality of students' learning, because some concepts in mathematics need to be introced through calculation; The ideas, steps and results of solving mathematical application problems should also be implemented through calculation. The teaching of geometry knowledge involves the calculation of perimeter, area and volume. The derivation and application of these formulas are also inseparable from calculation. The knowledge of simple equation, proportion and statistical chart is closely related to calculation. It can be seen that students' computing ability is crucial. Therefore, how to improve students' computing ability has become an important issue in primary school mathematics teaching
some students don't understand calculation theory, and the application of calculation method is relatively rigid. Mistakes in exercises will be frequent. When there is a mistake, teachers and students do not analyze the cause of the mistake, but just blame it on carelessness. As time goes by, teachers complain about students' poor computing ability. Students are scared when they see calculation
to change this phenomenon. Quickly and effectively improve students' computing ability, better development of students' thinking. In primary school mathematics teaching, we must strengthen the teaching of calculation, take measures and methods to cultivate students' calculation ability, so that students' calculation is accurate and fast, so as to achieve the proficiency required in the syllabus and make the calculation method reasonable and flexible< The development of students' computing ability is closely related to the mastery of mathematical concepts. Calculation is based on understanding mathematical concepts; And the mathematical concept can be consolidated and developed through the practice of calculation. Students' computational ability mainly refers to two aspects: one is the mastery of computational rules; Second, the formation of computing skills. Calculation method is a high generalization of calculation method. It reflects the regularity of calculation method. To master the calculation rules, students should not only know how to calculate according to the rules, but also know why to calculate in this way. So understanding is the key to mastering the algorithm. The main sign of the formation of computing skills is correct and rapid. The so-called skill is a way of action or mental activity to successfully complete a task. It is a close to automation, complex and more perfect movement system, which is formed through purposeful and planned practice. Mathematical skill is the coordination of a series of actions and the automation of the way of activities that are necessary for the successful completion of a certain mathematical task. This kind of coordinated action and automatic activity is formed through repeated practice on the basis of existing knowledge and experience. Computational skill is a kind of mathematical mental skill in such mathematical skills. It is a kind of cognitive activity with the help of internal speech. Including perceptual memory, thinking and imagination and other sharp components, and thinking as its main activity component. It is formed on the basis of mastering the calculation rules through many exercises, not innate for students. Students' computing ability mainly depends on the cultivation of teachers to improve. The calculation ability of primary school mainly refers to the ability of oral calculation< The purpose of the study is to find out the causes of students' calculation errors and the existing psychological barriers through investigation and research, and take positive preventive measures to improve students' calculation ability
2, to overcome the psychological barriers of students' calculation and improve their calculation ability
3. Cultivate students' good calculation habits, improve their interest in learning, enable them to master calculation methods, form calculation skills and improve their calculation ability. At the same time, it can promote the development of students' thinking, cultivate their excellent qualities of patience, carefulness and fearlessness of difficulties, as well as their practical and realistic scientific attitude. 4. Strive to find teaching methods that can effectively rece the burden of students, effectively cultivate the ability of calculation and innovation, and promote students' active learning, and initially establish the "resource bank" of mathematical calculation teaching
5 to train teachers through subject research, form a group of teachers with certain theoretical level, mathematics teaching and scientific research ability, and speed up the professional growth of teachers< Five, the main content of the research
around the focus of the research, we will research content is divided into three parts:
1, promote students to develop good computing habits
some students have low computing ability, which is e to unclear concepts, lack of real understanding of computing theory, and lack of proficiency in algorithms, but not forming good computing habits is also an important reason
one. Some of them have bad habit of examining questions, and they often do it after half reading; In some cases, the writing is not standardized, the numbers and operational symbols are scribbled, and the numbers and symbols are copied wrongly; Some do not have the habit of checking the calculation, and the title
is finished. In view of these phenomena, we believe that in order to improve students' computing ability, we should first cultivate students' good computing habits and let them master some methods. We will study how to promote students' good calculation habits in classroom teaching, extracurricular practice, examination and testing
2. Using classroom teaching to find teaching breakthrough and teaching training methods to improve students' mathematical calculation speed and accuracy
the basic knowledge of calculation is widely distributed in primary school mathematics textbooks. Every mathematics teacher is required to be familiar with the teaching requirements of each textbook, carefully design teaching plans according to pupils' cognitive rules, age characteristics and knowledge base, and flexibly control the teaching process. At the same time of strengthening the basic knowledge, we should also pay attention to the cultivation of ability and development of intelligence, and strive to achieve the best teaching effect. We will focus on these three aspects:
(1) research on the teaching process and method of computing
dominated by the traditional teaching concept, many teachers follow the principle of "practice makes perfect" and implement the "sea of questions" strategy in computing teaching, which makes more and more students hate and fear computing. Reading the new curriculum standard carefully, it is not difficult to find that the requirement of calculation mentioned "attach importance to the cultivation of students' innovative consciousness and practical ability". This requires us to actively change our teaching concept, and put the teaching goal more in the thinking process of computing itself, and how to carry out the teaching and learning activities of computing, so that students can actively and happily participate in computing, feel the charm of computing, taste the fun of computing, and improve the ability of computing. Therefore, we will study how to carry out the teaching process in the classroom of computing teaching, and how to use teaching strategies to make students really love and understand computing
(2) research on algorithm diversification
"encouraging algorithm diversification" is an important concept of the new curriculum standard. The essence of algorithm diversification is to let students learn new knowledge from their existing knowledge and experience, and encourage students to explore solutions through independent thinking. The diversity of algorithms has been paid great attention and actively practiced by the majority of teachers, but the understanding and grasp of it are different. I
will study how to grasp the essence of algorithm diversification in mathematics teaching, deal with the relationship between algorithm diversification and algorithm optimization, and pursue the rationality and flexibility of algorithm
(3) strengthen the research of oral arithmetic and estimation teaching
oral arithmetic, also known as mental arithmetic, is a way of directly calculating the number without the help of calculation tools, mainly relying on thinking and memory According to the new curriculum standard, oral arithmetic is not only the basis of written calculation, estimation and simple calculation, but also an important part of calculation ability. It can be seen that the first step to cultivate students' computational ability is to start with the ability of oral calculation
mathematics curriculum standards clearly point out that students can estimate the results of operations and explain the rationality of the results in terms of developing students' sense of number. Estimation is one of the effective ways to develop students' number sense, and it is also an important link to ensure the correct calculation, which is very beneficial to improve students' calculation ability. By estimating before calculation, we can estimate the general results and create conditions for the accuracy of calculation; Estimate after calculation can judge whether there are errors in calculation, find out the causes of errors and correct them in time. In the process of students' daily oral and written calculation, whether it is pre calculation or post calculation estimation, it has a certain value,
therefore, we will study how to strengthen the training of oral calculation and estimation, organize students to do interesting exercises in a planned way, and improve students' ability of oral calculation and estimation by means of test evaluation and competition activities
3. Research on the positive role of family ecation in improving students' computing ability. Family ecation is an effective supplement and natural extension of school ecation, which plays an important role in the development of students. Students live in the family, the impact of family environment on children is all-round, but also crucial. Nowadays, parents place high expectations on their children and attach importance to the improvement of their children's abilities in all aspects, especially their children's mathematics learning. While some parents supervise and tutor their children, they also employ tutors for mathematics tutoring. However, now parents pay more attention to the cultivation of their children's mathematical thinking ability, let their children participate in the special "Olympiad Mathematics" counseling, pay less attention to the cultivation of their children's computing ability, and family ecation has no effect on improving their students' computing ability