The computing power is very unstable

1. Hello, landlord. In fact, most people's intelligence level is almost the same. You are not good at math and English, and you feel slow. In fact, you can improve yourself through more practice and diligence

2. 1. Mine card generally needs the specified driver version
2. The 382.33 384.76 384.96 driver installed on the official website can't work, only the 382.53 driver can work normally
3. If the driver of this version can not be used normally, you need to contact the official technician to provide the driver file for re installation.

3. It is one of the important tasks of primary school mathematics teaching to cultivate students' computing ability. As the addition and subtraction method within 20 is the focus of the first volume of primary school mathematics textbook and the basis of multi digit calculation, it is necessary to strengthen the cultivation of students' calculation ability from the first semester of grade one. How to improve the calculation ability of the first grade students? I think we should do the following: first, pay attention to the students' hands-on operation of learning tools, obtain the concept of number, and understand the calculation method. Number recognition is the premise of calculation. Conversely, calculation can deepen the understanding of the concept of logarithm. The two are organically connected through the composition and decomposition of numbers. In order to make students acquire the correct number concept and calculation method, it is important to cultivate students' calculation ability. At the beginning of this semester, I paid special attention to the students' hands-on operation of learning tools to obtain the concept of number and understand the calculation method. In the understanding part of teaching numbers within 10, after knowing each number, we make students understand the composition and decomposition of numbers through pictures or physical pictures, and then let students consolidate the composition and decomposition of numbers through repeated hands-on operation, and pay attention to the close combination of students' hands-on, thinking and language in the operation process, so as to cultivate their attention, observation, hands-on ability The ability of mathematical language expression and logical thinking. In the teaching of carry addition within 20, I did not rush to reveal the calculation method, but spent more time to let students carry out the "circle ten" operation, so that students can understand the "gather ten method" from the operation. By doing so, all the students in our class have a good grasp of the "ten methods" and laid a good foundation for learning the abdication subtraction within 20. 2、 From the reality of life leads to the teaching of calculation, understanding the theory is the key to improve the ability of calculation. If you want to be able to calculate quickly and well, it is the key of teaching to understand calculation theory. The understanding of arithmetic mainly depends on arousing students' awareness of how to calculate, how to calculate and how to calculate. How to achieve this effect? That is to introce from the reality of life, so that students can explore reasonable calculation in solving practical problems in life. For example, when teaching the carry addition of 9 plus several, you can set the situation, stimulate interest, and let students take the initiative to explore and discover. First of all, the situation is set in the introction link. The rabbit wants to treat. It prepares two boxes of milk for its good friends. There are nine bottles of milk in the first box and eight bottles of milk in the second box. How many bottles of milk has the rabbit prepared? Children, can you help the rabbit to calculate? Through the introction of small animals that students like to see and hear, the students will feel very interesting. They are willing to help the little rabbit calculate, and their interest will be aroused. After the students thought about it for a while, the teacher asked another question: do you have any way to let others see how many bottles of milk there are at a glance? At this time, the students will think deeply about what to do, so the method of making up ten is naturally found by the students. One bottle is taken from the second box and put in the first one. The first box makes up ten, and the remaining seven bottles in the second box are 17 bottles; Or take out two bottles from the first box and put them in the second box. The second box makes up ten, and the remaining seven bottles in the first box are 17 bottles. Students from the hands-on operation, quickly and intuitively understand the principle of the method, then the teacher to sum up, students will form a representation in the mind, and then on the basis of understanding the theory, learn to calculate 9 plus several carry addition. What's more beneficial to understand arithmetic is that students can draw inferences from one instance and transfer knowledge when calculating the carry addition of 8 plus several, 7 plus several and 6 plus several. In addition, once students encounter problems in the calculation, they can also calculate the problems according to the calculation theory. Therefore, in mathematics teaching, setting up the reality of life and making students understand the calculation theory in solving practical problems are the basis of improving students' calculation ability. Third, choose the form of practice from reality to improve the efficiency of classroom practice. After guiding students to form the concept of number and understand the calculation method on the basis of perceptual materials, they must graally form skilled calculation ability through timely and sufficient practice. In order to improve the efficiency of classroom practice without increasing the burden on students, I am very interested in choosing the form of practice, so that every student can have more opportunities to practice in class, At the same time, it is convenient for teachers to check in time. Also uses the collective to see calculates, listens to calculates, between the schoolmate gives the question to each other to calculate, the student everybody uses the brain to start. We also ask the students to find out the corresponding number cards according to some formulas shown on the blackboard, and then ask the students who are right and fast to paste the number cards on the corresponding formulas. This form of practice is very popular with students. 4、 The practice should be targeted and help students find the rules in the calculation. Although more practice is a way to improve the ability of calculation, but blindly focusing on quantity will only damage students' interest in calculation, and finally get the opposite effect. Therefore, the practice must be targeted, for those easy to make mistakes, easy to mix the topic of practice, so that students can really improve their computing ability in discrimination. The pertinence mentioned here can be aimed at the key points and difficulties in the textbook, can also be the mistakes often made by the students in this class, can also be some calculation problems of different types of questions, such as writing the number directly; See who is right and fast; Fill in the circle with the greater than sign, less than sign or equal sign; Fill in the appropriate number in the box... In different types of questions, students can not only improve their calculation ability, but also make them master the knowledge flexibly. Many calculation problems have their own rules to follow. If students master these rules, they can not only improve the accuracy and speed of calculation, but also cultivate their logical thinking ability and inctive reasoning ability. For example: the teacher can show some questions: 3-3, 8-8, 6-6, 10-10, 13-13, 16-16, 2-0, 5-0, 9-0, 0 + 4, 5 + 0, 17 + 0,... Let the students calculate first and then think. Can you classify these questions? How to divide? What's your reason? What rules do you find in the process of classification? Students in this series of activities and thinking, students can find the same two numbers subtraction must get 0, a number and 0 add also get this number, a number minus 0 also get this number... These laws. 5、 To improve students' computing ability, we must first cultivate students' good computing habits. Many teachers often find that students make a lot of mistakes when doing calculation problems in teaching, and these errors are not that students can't calculate, nor that students don't know how to calculate, but because of bad calculation habits. This performance is: the wrong number, read the wrong symbol and so on. Therefore, it is particularly important to cultivate students' good calculation habits. First of all, it is necessary to cultivate students' good writing habits. Students are required to write Arabic numerals and operational symbols carefully. Only when they write correctly is the premise of correct calculation. Secondly, we should form the habit of careful examination, that is, we should see the requirements of the questions clearly, and solve the problems on the basis of correct understanding of the meaning of the questions, so as to avoid the phenomenon of wrong answers. Here, we should also pay attention to reminding students to see the operation symbols and numbers clearly when doing the questions, so as to avoid the phenomenon of wrong calculations because of reading the wrong questions. Finally, we should cultivate students' good habit of inspection. We should not just talk about the habit of inspection. We should teach students the method of inspection. Only when we can check, we can check. No matter what kind of good calculation habits are not achieved overnight, only in the teacher's strict requirements of repeated training, perseverance, good learning habits can graally form. The calculation ability of lower grade students depends on Teachers' careful design, careful guidance, various forms of practice and good habits to improve and develop, and to meet the requirements of the new curriculum standard.

4. Maybe the machine you bought is not very good

5. We should pay attention to the following problems:
first, we should grasp every bit to cultivate students' good habit of calculation. Therefore, teachers should ecate students to form the following good calculation habits
1. The habit of paying attention to proofreading. In the homework, students are required to do three checks: check with the original title after ing; The numbers in the vertical type should be checked with those in the horizontal type; The number in horizontal should be checked with that in vertical
2. The habit of active checking. Checking calculation can not only ensure correct calculation, but also cultivate students' meticulous attitude towards learning
3. The habit of correcting in time. If the errors in the operation are common, they can be corrected collectively; If it's indivial, let the students correct it in time and find out the cause of the mistake, so as to avoid similar mistakes in the future
4. Develop a good habit of writing. The writing of numbers and operation symbols in the title must be standard and clear. The space between the numbers should be appropriate, the vertical type on the draft should be clear, and the numbers should be aligned
in addition, teachers should set an example for students. For example: the examination is first, the analysis is second, the writing on the blackboard is concise, the writing is standard, the key point is prominent, and the organization is clear< Second, pay attention to oral arithmetic and lay a good foundation for written arithmetic
it is pointed out in the "primary school mathematics curriculum standard" that to cultivate students' computing ability, we should pay attention to basic oral arithmetic training. Oral calculation is not only the basis of estimation, written calculation and simple calculation, but also an important part of calculation ability. Only when the ability of oral calculation is strong, can the speed of written calculation be accelerated and the accuracy of calculation be improved. For example, calculate 418 ÷ 53. Take 53 as 50 test quotient 8, and find that 53 * 8 = 424 by oral calculation, which is greater than the divisor, so we need to rece the quotient by one. In this way, we can avoid finding that the quotient 8 is wrong by oral calculation, and then erase this process, which can greatly improve the speed of calculation
thirdly, strengthen the estimation to promote the development of students' number sense
the new textbook attaches great importance to the cultivation of students' estimation ability. Practice has proved that cultivating students' estimation consciousness and ability and guiding students to form the habit of "oral calculation - Estimation - written calculation - Review" are concive to students to find out their deviations in solving problems in time, re think and re calculate, so as to prevent and rece errors and improve the accuracy of calculation
calculation teaching runs through the whole process of mathematics teaching. Only when the foundation is solid, can we calculate skillfully and simply on the basis of proficiency.

6. Fall in love with computing
if you want to do a lot of things well, you should first fall in love with such things, and so is computing. Generally speaking, people studying science have better computing ability, because they love computing more than others.

don't avoid things related to computing in life.
many people are used to asking people when they encounter computing, although it's very simple computing, because in their hearts, Their computing ability is very poor, and it seems faster to ask others, and the error rate is also reced accordingly. Some people directly take out a calculator or mobile phone, and think that it is more convenient and faster. Over time, their computing ability will only become worse and worse

think more about the topic of numbers
for example, a hotel opens, You can set a cost for it according to the number you predict, calculate how long you can recover the cost, or calculate how much money you can add to the account after three years of deposit in the bank according to the interest. After habitually calculating such problems, you will find that you have a concept of the number, And the computing ability will be greatly improved

4
master some computing skills
many people around me will not use computing skills, for example, I ask 99 × When 99 is equal to several, many people feel that they can't calculate it by oral calculation. In fact, this skill was often used in our primary school, but as we grow up, we graally forget these skills, such as converting to 99 × In addition, if I ask what is 55 + 56 + 57, many people really add one by one. In fact, they can quickly calculate 56 by simple multiplication × 3 on the line, a lot of calculation can use the above skills to calculate and transform, and really use up to rely on their own efforts

7. So I'm similar to you, but our teacher teaches us to do 20 mental arithmetic every day, with a limited time of one minute. If you practice every day, your calculation will be OK
in addition, the calculation must be done carefully
1) don't rush to make a question.
2) force yourself to get used to it, look at every word of the question carefully from head to end, and force yourself not to use cleverness to evaluate the question and the following text. Be sure to look at it in order from head to tail.
3) don't use cleverness to rush to do it after reading it.

4) don't rush to make a question after reading it.
5) follow the requirements, Combine with the diagram, and then do it step by step.

6) don't be clever in mental calculation or jump steps, but do it step by step.
7) remember to check the calculation

8. Primary school textbook help pays special attention to the understanding of arithmetic. You can buy a primary school textbook to help your children. Parents probably don't know what arithmetic is. This book is also very helpful to parents

9. A person's computing ability is related to his or her talent, but it can also be cultivated through the day after tomorrow:
fall in love with computing
to do a lot of things well, we must first fall in love with such things, and so is computing. Generally speaking, people studying science have better computing ability, Because they love calculation relatively

don't avoid the things that involve calculation in life
many people are used to asking people when they encounter calculation, although it is very simple calculation, because in their hearts, their calculation ability is very poor, and it seems faster to ask others, and the error rate is correspondingly reced, and some people directly take out a calculator or mobile phone, Think that this is more convenient and faster, and over time, the computing power will only become worse and worse

think more about the topic of numbers
for example, if there is a hotel opening, you can set a cost for it according to the number you predict, and calculate how long you can recover the cost, or if you deposit it in the bank for three years, According to the interest calculation, how much money can be added to the account after three years, and so on. After habitual calculation, you will find that you have a concept of numbers, and your calculation ability will be greatly improved

master some calculation skills
many people around me will not use calculation skills, for example, I ask 99 × When 99 is equal to several, many people feel that they can't calculate it by oral calculation. In fact, this skill was often used in our primary school, but as we grow up, we graally forget these skills, such as converting to 99 × In addition, if I ask what is 55 + 56 + 57, many people really add one by one. In fact, they can quickly calculate 56 by simple multiplication × 3 is OK, a lot of calculation can use the above skills to calculate and transform, and really use it depends on their own efforts

play some number games
there is a game that not only tests the ability of calculation, but also is very interesting, there must be more people involved, preferably more than five people, any one person should count first, when the multiple of 1, 2, 3... To 7, you should raise your hand, Of course, the number of people can't be 7 or a multiple of 7, because that person will always raise his hand, but it's not going to a party or going out together to play this game. In fact, you can download some games about mental arithmetic, which not only improves your reaction ability, but also improves your mental arithmetic ability