Ensure the computing power

1. The teacher should ask the students to check carefully after finishing the questions, cultivate the students to form a good learning habit of self-examination, ensure the formation of calculation skills, truly let every student get full and comprehensive development, let different people learn different mathematics.

2. First of all, understand and firmly grasp the basic knowledge. That is, the basic knowledge related to computing power, mainly refers to mathematical concepts, operation laws, operation properties, operation rules and calculation formulas. It is difficult for students to understand some calculation rules. In teaching, teachers should not be in a hurry for success, but should help students to master basic knowledge as a breakthrough, disperse and break through difficulties. For example, when teaching the addition and subtraction method of different denominator fractions, first of all, let students understand that the denominator is different, that is, the units of fractions are different. If the units of fractions are different, they can't add and subtract directly. When they understand this truth, they can guide students to use the knowledge of general score to change the different denominator fractions into the same denominator fractions, so the problem turns into the addition and subtraction of the same denominator fractions that they have learned
Second, strengthen the practice and basic skills training. In the calculation practice, strengthening the basic skills training is an important step to improve the calculation ability. In addition, in the calculation practice, we should help students summarize some regular things, so that they can skillfully use the basic knowledge to calculate, and constantly improve their calculation ability. In addition, the forms of calculation exercises should be diversified, and the forms should serve the content. However, we should pay attention to the quantity of exercises. We can't do the opposite as long as we don't pay attention to the quantity and quality. Some students lack the spirit of diligent learning, and the calculation itself is boring and lack of plot. When students encounter a large number of questions, they are easy to resist and unwilling to calculate, which can seriously affect students' interest in learning mathematics. In teaching, as teachers, we should simplify the topic selection, Try to find some simple calculation problems to guide students to do abstruse calculation problems
thirdly, cultivate students' good study habits. Good learning habits are the guarantee to improve the accuracy of calculation. First of all, students are required to carefully review the calculation, and do not blindly simplify the calculation without reviewing the operation order, such as 15 + 5 × 5), the students mistakenly calculated it as 20 × Secondly, the calculation process should be strictly standardized. When solving problems, students are required to have standard calculation format, neat writing, clean homework and paper surface. Even the draft should be written neatly and clearly. When students make mistakes in calculation, students should not only check the calculation process, but also find out whether there are errors in the draft. For example; The alignment of digits, whether the carry is added or not. Let the students form the habit of self checking in calculation< Fourth, strengthen the cultivation of the ability of oral calculation.
calculation is the basis of estimation and written calculation. Any four item mixed calculation problem is synthesized by the oral calculation problem of the main road. The correctness and rapidity of oral calculation directly affect the improvement of the calculation ability. When designing oral calculation exercises, we should be targeted, from easy to difficult, and graally improve them, including some simple calculation problems, It is helpful to train students' thinking flexibility to do oral arithmetic exercises frequently.

3. The premise is that you have to have such a large amount of financial resources, the ability to speculate, and the courage to take risks. Or you can buy all the bitcoin (there is a rated number, only how many, no more), and then you can use it to make a virtual bank, Provide trading services for those who don't want to stay behind

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. According to the mineral resources law, administrative measures and Interim Provisions, the transfer of mining rights should meet the following conditions: (1) the mining enterprise has been in mining proction for one year; After obtaining a mining license, a mining applicant may set up a new enterprise because of joint venture and cooperation with others in mining, which is not subject to the restriction of one year's mining operation 2) The ownership of mining right is not disputed 3) In accordance with the relevant provisions of the state, the mining right use fee, mining right price, mineral resource compensation fee and resource tax have been paid 4) For other conditions stipulated by the Department of Geology and mineral resources under the State Council, a state-owned mining enterprise shall obtain the consent of the competent department of the mining enterprise before applying for the transfer of the mining right 5) In principle, the mining right shall not be transferred in part. If it is necessary to sell part of the mining right, an application for separation of the mining right must be submitted to the registration administration organ before the application for sale, and the registration proceres for the change of the mining right shall be gone through after approval
2. The transferee of mining right shall meet the requirements of mining right applicant stipulated in the measures for the administration of mineral resources mining registration Article 5, paragraph 1, item 2 of the measures for the administration of mineral resources mining registration stipulates that when an applicant for mining right applies for a mining right license, he shall submit to the registration administration a certificate of the qualifications of the applicant for mining right. The so-called qualification conditions of mining right applicants mainly refer to the ability of mining right applicants to independently bear civil liabilities and fulfill civil obligations, that is, they have the capital, technology and equipment conditions suitable for the mining mineral resources Article 19 of the Interim Provisions stipulates that the applicant for mining right shall be the investor or a legal person established by the investor, the applicant for mining right shall be an enterprise legal person, and a sole proprietorship enterprise shall be established in accordance with the law for indivial mining. Those who do not meet the above statutory requirements shall not be the transferees of mining rights
3. If the grantee is a foreign-invested mining enterprise, it shall go through the change registration proceres with the registration authority with the license issuing right of the foreign-invested mining enterprise
4. If the mining right holder transfers the mining right of the mineral land formed by the state funded exploration, the mining right holder shall entrust the evaluation institution to evaluate the mining right. The appraisal institution shall be recognized by the Department in charge of Geology and mineral resources under the State Council in conjunction with the Department in charge of state owned assets under the State Council, and the conclusion of the appraisal shall be confirmed by the Department in charge of Geology and mineral resources under the State Council
to clarify the conditions of the transfer of mining rights is helpful for us to grasp whether the content of the transfer contract of mining rights violates the provisions of laws and regulations, so as to correctly determine its effectiveness.

5. It's a virtual mining machine + daily rebate bonus + platform digital token + promotion system
some places can be optimized..
it's not too expensive to develop, do you want to develop it?

6. In fact, any problem can be overcome.
I think you can find some problems.
it must be problems with complex process and complicated calculation (such as the last step of Mathematics)
it is best to provide reference answers, Then you work on the draft paper step by step
until you match the standard answer
make a plan for yourself
for example, do a question one night
secondly, I think you should be calm when doing the question
sometimes say to yourself
write down step by step
don't worry
try to write clearly on the draft paper
finally
you can also do it Think about the mistakes you made in the past.
to sum up,
at least pay attention to this in the future.
finally, I wish you success in the college entrance examination.
after all, I don't think you should be too nervous about the college entrance examination.
as long as you do it step by step,
no matter how simple or difficult the test paper is,
you should have a good attitude.
you will definitely have a good score uck

7. 1、 The existing phenomenon
in a review class of four mixed operation application problems, I asked 8 students to perform on the stage, but the result was surprising: all the formulas of 8 students were correct, but the calculation results of 7 students were wrong, and these 7 students were not students with learning difficulties at all, some of them even had good grades. Afterwards, I talked about it with my colleagues in the office, and everyone felt the same: now the students' computing ability is really much worse. When attending the seminar on new teaching materials organized by the district teaching and Research Office, many teachers present talked about similar problems. From this point of view, students' weak computing ability is not only the difficulty I encountered, but also a common phenomenon in the whole mathematics teaching< Second, thinking
the "primary school mathematics curriculum standard" puts forward "reasonable, accurate and rapid operation ability" as one of the four basic abilities. Therefore, it is not difficult to see the position and role of operation ability in students' mathematics comprehensive ability
it is an important and arous task in primary school mathematics teaching to cultivate students' accurate and rapid computing ability. It is also an important task that primary school mathematics teachers must strive to complete in teaching, and it is also the basis for students to learn mathematics well
therefore, as a mathematics teacher, we must carefully analyze and accurately find out the reasons for students' weak computing ability, so as to suit the remedy to the case and ensure the quality of teaching.

8. Only by actively learning, can we feel the fun and be more interested in learning. With interest, efficiency will be improved unconsciously. Some students have poor foundation, always have problems in the process of learning, and are ashamed to ask for advice. As a result, they are depressed and absent-minded. How to improve their learning efficiency. At this time, the only way is to ask people for advice. If you don't understand something, you must understand it and accumulate it bit by bit in order to make progress. Only in this way can efficiency be graally improved.

9.

How to improve students' computational ability is as follows:

Computational teaching is an important part of primary school mathematics. It runs through the whole process of mathematics teaching and is the basic knowledge and skills that primary school students need to master in learning mathematics. One of the main tasks of primary school mathematics is to cultivate and improve students' computational ability. However, how to cultivate and improve students' computing ability is a puzzle for many teachers

First, stimulate students' interest in calculation:

Confucius said: "those who know are not as good as those who are good, and those who are good are not as happy as those who are happy."“ Good and happy means willing to learn and like to learn. Computing is really boring. In order to cultivate students' interest in computing, arouse their enthusiasm in learning and stimulate their thirst for knowledge, we must try every means to attract students. Because the calculation problem is composed of numbers and calculation symbols, it is more abstract and has no vivid plot. Therefore, we must design a variety of forms, flexible, both targeted, knowledgeable, and interesting exercises. In order to get twice the result with half the effort, we should make use of the students' active and competitive psychology to design some calculation problems of mathematical games, stimulate students' interest in learning, and encourage every student to participate actively

1. for example, they are trained by means of "rushing to answer exercises", "finding friends" to win the red flag "," sending letters "," breakthrough Games "and" mathematics relay race "; Using cards, small blackboard, multi-media visual calculation, listening calculation; Limited time oral calculation, self compiled calculation problems, etc

   at the same time, we can use the scheme of "free to do" calculation (for three consecutive days, all pairs can "free to do" three-day calculation) to stimulate students' interest in learning and improve the accuracy of calculation

2. Explain the principles and rules:


1. the principles and rules are the basis of calculation

   the correct operation must be based on a thorough understanding of the calculation principle. The calculation principle in the students' mind is clear and the rules are firmly remembered. When they do four calculation problems, they can proceed in an orderly way

   in teaching, teachers should guide students to understand the calculation theory with clear theory, and guide students to speak out the calculation theory. It is necessary to guide students to actively participate in the derivation process of the rule, so that students can know what it is and why it is, master the calculation method on the basis of understanding, and finally form the calculation skills

   for example, learn how to divide one digit by two digits (the number on each digit of the divisor can be divisible)

   42 ÷ At 2:00, many students will summarize such an algorithm: first, use one digit to remove the number on the ten digits of the divisor, and write the quotient on the ten digits, then use one digit to remove the number on the one digit, and write the quotient on the one digit

   when students come up with such an algorithm, they must understand why they can do it

   the teacher can let the students play sticks to help them understand the arithmetic. Bundle 10 sticks into a bundle. First, divide the 4 bundles into 2 equal parts, 2 sticks for each, that is, 2 tens. Then divide the 2 sticks into 2 equal parts, 1 stick for each, that is, 1 stick for each. Two tens and one add up to 21, so 42 ÷ 2=21

   the students clarify the calculation theory, clarify the method, understand the method, fundamentally improve the calculation ability and develop the thinking ability

2. to clarify the order of four mixed operations

   operation order refers to the same level operation from left to right. In the formula without brackets, if there are addition, subtraction, multiplication and division, multiplication and division should be calculated first, then addition and subtraction

   those with brackets should be counted in parentheses first, and then in brackets

   The order of mixed operation of decimal and fraction is exactly the same as that of mixed operation of integer. Therefore, it is very important to clarify the order of operation
   When

   is calculated, the following errors will occur, such as:

   25 + 75-25 + 75 (should be equal to 150, but the error is 0)

   3.6-3.6 × 5 (it should be equal to 1.8, but the error is 0)

   7.56 ÷ zero point four × 2.5 (should be equal to 47.25, but the error is 7.56)

   are not calculated in accordance with the order of operation caused by... Similar problems, in the teaching should strengthen the practice, can also be compared to practice, in order to arouse students' attention to the order of operation

   Third, strengthen the training of oral arithmetic
   

   is the basis of learning written arithmetic, simplified arithmetic and four mixed arithmetic, and it is also an important part of the cultivation of students' computing ability

   It can not only improve the speed and accuracy of calculation, but also effectively cultivate students' attention, memory and thinking ability

   with the different teaching requirements and teaching contents in different stages of primary school, oral arithmetic training should be targeted. Junior middle school students mainly practice one digit and two digit addition and subtraction, while senior middle school students take one digit by two digit oral arithmetic as the basic training, and the effect is better.

   the difficulty of oral arithmetic should be from easy to difficult, and there should be a slope. In the training of oral arithmetic, the first requirement is to be able to calculate and strive for accuracy, and then the method is required to be simple and fast. When training, we should do more rounding calculation and common data operation

   for example: 45 + 55, 20 × 5、25 × 4、125 × 8 The square of natural numbers from 1 to 20; The denominator is the decimal value of the simplest fraction of 2, 4, 5, 8, 10, 20 and 25, that is, the mutual transformation of these fractions and decimals; The proct of 3.14 and each single digit. The training of these types of questions can greatly improve the speed of students' oral arithmetic

   when carrying out mental arithmetic training, we should pay attention to the flexible forms of practice, such as winning the red flag, confrontation race, relay race, mental arithmetic game, etc

   Fourthly, simple operation should be emphasized

   the teaching of simple algorithm is an important part of primary school mathematics teaching
   

   it is an important way to improve students' calculation speed to let students master simple calculation methods. The basis of simple operation is some mathematical operation properties and operation laws
   

   in the teaching of calculation, students should flexibly use the commutative law and combination law of addition and multiplication, the distributive law of multiplication, the nature of subtraction, the nature of division, the nature of constant quotient, etc. Such as:
   

   182 + 37 + 18 + 263 = (182 + 18) + (37 + 263)
   

   29 × 75＋29 × 25=29 × 75＋25
   

   15－7.8－2.2=15－(7.8＋2.2)、9 ÷ 12.5=(9 × 8) ÷ twelve point five × 8) There are many simple calculation methods in primary school mathematics, some of which can use the change law of "sum, difference, proct and quotient" to convert the known number into the number of integer ten, integer hundred, integer thousand, etc., which is also called "rounding method"
   

   the purpose of rounding method is to achieve the purpose of simple operation by changing the operation order or operation data. Such as:
   

   327 + 101 = 327 + (100 + 1)
   

   9 + 99 + 999 = 10 + 100 + 1000-321 × 9.9=21 × 10－0.1
   

   9999 × 2222+3333 × 2222=3 × three thousand three hundred and thirty-three × 2222+3333 × 3334=3333 × 6666 + 3334)
   

   ...
   

   through simple calculation, students can greatly improve the calculation speed and accuracy, and make the complex calculation simple, so as to make it easy, simple and fast

   5. Contrast exercises of error prone questions

   in the process of learning and strengthening the old knowledge, students master the calculation method and form a thinking set. Fixed way of thinking has a positive side in operation, but it also has a negative impact

   in the process of calculation, students often irrationally transfer the methods used in the past to new calculation. For example, when learning decimal multiplication, students often align the decimal points of two factors in the process of column vertical

   after learning multiplication allocation, it often interferes with the calculation method of the law of combination of multiplication × four × At 125, they made the mistake of (8 × 125 × four × 125

   Through purposeful practice, students can correct their mistakes to improve their discrimination ability, and evaluate their homework in time to correct their mistakes. For example: 38.41 + 5.7 and 38.41 × 5.7 twenty-five × 40 ÷ fifty × 2) And 25 × forty ÷ fifty × 2 9 - (8.5-1.5) and 16.9 - (8.5 + 1.5); twenty-five × 4 + 8) and 25 × four × 8

   in the process of practice, help students analyze the causes of errors in detail, make clear the connection and difference between them through comparison, avoid confusion, consolidate correct knowledge, improve students' computing ability, and ensure the quality and speed of calculation

   Sixth, cultivate good study habits

   students have the following common mistakes: reading wrong, ing wrong questions; When the column is vertical, the digits are not aligned; There is no draft in calculation; The calculation error of one digit addition and subtraction leads to the error of the whole question; I don't concentrate on my homework

   From the phenomenon, it seems that most of the students' calculation errors are caused by "carelessness", and the reasons for "carelessness" are no more than two aspects: one is that children's physical and psychological development is not mature enough, the other is that they have not formed good learning habits

   to cultivate students' good study habits is the requirement of quality ecation and the premise of improving the accuracy of calculation

   Develop a good habit of examining questions
   

   in teaching, strict requirements are put forward for students, and they are required to calculate carefully
   

   in addition, there are also some methods for students. For example: check method of calculation: one pair of questions, two pairs of vertical, three pairs of calculation, four pairs of number
   

   the way to examine a topic is to think twice. That is: first look at the whole formula, which is composed of several parts, and think about how to calculate according to the general rules; Let's see if there are any special conditions. Let's see if we can use a simple method to calculate
   

   if the students follow these methods, the calculation will have a preliminary guarantee
   

   2. Develop good writing habits
   

   there are obvious differences in the attitude of students in the class, some students even write nonstandard, often write "3" as "5", "1" as "7", etc.
   

   make their writing as "understandable" as far as possible by asking them to practice calligraphy and other means, so as to make them less and not wrong questions
   

   3. To form a good checking habit is a kind of ability and a habit. In my opinion, checking calculation should be strictly required as an important part of the calculation process,
   

   after calculating a question, or taking written calculation checking calculation, at least taking oral calculation and estimation checking calculation; Some test methods can also be used flexibly, such as the substitution method for equation test
   

   summary:
   

   the cultivation of students' computing ability is a meticulous and long-term teaching work. It is not a matter of overnight to improve students' computing ability. It is possible to achieve results only when teachers and students work together to achieve regular, planned and step-by-step. Teachers should pay attention to make the teaching of calculation interesting, the combination of calculation theory and algorithm, the diversification of algorithm and the optimization of algorithm. They should also pay attention to the importance of checking calculation, do a good job in checking calculation demonstration, enrich students' knowledge content at the same time, explore new teaching methods, and effectively improve the calculation ability of primary school students

10. 1、 Phenomenon
last year, I was in the sixth grade graating class. During the teaching, I found that some students often made mistakes in calculation. At that time, I was thinking about what caused the large-scale errors. In this academic year, I'm in the second grade. When I teach the addition and subtraction method between three digits, students also make various mistakes. Moreover, these students are not students with learning difficulties at all, and some of them even have good grades. Later, I talked about it with my colleagues in the office, and we all have the same feeling: now students' computing ability is really much worse. When they go to school, many students carry calculators, especially senior students< Second, thinking
calculation can be seen everywhere in our life. Calculation teaching is an important content of mathematics learning and one of the basic skills that must be practiced well in mathematics learning; Calculation teaching is an important part of mathematics teaching "Mathematics curriculum standard" clearly points out: "it is an important task of mathematics teaching to cultivate students' computing ability.". It is an important and arous task in primary school mathematics teaching to cultivate students' accurate and rapid computing ability. It is also an important task that primary school mathematics teachers must strive to complete in teaching, and it is also the basis for students to learn mathematics well. Therefore, as a mathematics teacher, we must carefully analyze and accurately find out the reasons for students' weak computing ability, so as to suit the remedy to the case and ensure the quality of teaching< When communicating with parents, we often hear some parents say such a sentence: "my child is too careless. Every time I do a topic, there are always problems." Whenever I hear this sentence, an instinctive sense of responsibility will arise. After a period of investigation in my two sophomore classes, with the help of the head teacher, I summed up the following cases of students' calculation errors:
1, bad habits, carelessness
wrong ing of the title, such as "-" as "+"; "645" is mistakenly written as "654". Some students' writing is not standardized, which leads to the deformation of numbers. They regard the deformed numbers as other numbers and make mistakes
2. The oral arithmetic is not strong and the foundation is weak
for example, the oral arithmetic of addition and subtraction within 20 is not proficient, resulting in more errors in the completion of carry addition and abdication subtraction. Some students can't recite the multiplication formula skillfully, which leads to mistakes in quotient test.