Why is it that the more questions you brush, the worse it is? The more math questions you brush, the

1. There is no clear division of topics.

Brushing questions, brushing questions, the essence is in the question, not brushing. So when you think of brushing as a kind of accumulation of quantity, then it means that whether it is a question that you need to do more or a question that you don't need to do, it will become a part of the brushing question, so that some of the questions are invalid. When you divide all the questions into a system, which are the three parts that must be done, can be done, and not done, and then complete them in the order of the important ones, the efficiency of doing the questions will be greatly improved.

The so-called topic division is actually to screen a large number of topics according to their current learning situation, and in this way, focusing time and energy on more important and accurate topics is one of the ways for students to accumulate advantages as much as possible.

2. "I don't know why".

When many students are doing questions, they can sometimes get the correct answer, relying on the routine accumulated in a large number of previous questions, substituting the numbers in them, and then they can get a correct answer. But the problem is that not all questions are just numbers that have changed, and when the first half of the question does not change, and when there is a turning point in the second half, many students cannot come up with a complete solution idea, that is, "I don't know why".

In essence, because they do not understand the internal logic of problem solving, students use "imitation" to do problems, and such learning habits often lead to bigger problems, that is, to a certain extent, students think that they have mastered the knowledge points, but in fact they do not understand the logic of the knowledge points at all.

The main reason for this situation is that you don't have a good grasp of the ideas and context of each type of question, and from the current situation, your thinking is rather confused.

Due to the accumulation of quantity, you actually have a fixed idea in your own mind, and it is easy to make mistakes again and again.

So the important thing now is not to frantically brush the questions, but to summarize the wrong problem set and find your own loopholes.

So here's the key, you can get it like this:

1.Improve the speed of brushing questions and continuously shorten the brushing time;

2.Divide the time into two sections, one is to control the time to complete the basic questions quickly, and one is to spend most of the time on the difficult problems (of course, the kind that can be done, but can't get a full score is preferred, and it is increased step by step.)

3.If the foundation is not good, just do the book in the third year of high school review class.

The electrostatic precipitator of the second burning machine head was transformed in 2009. The original factory site is limited, only the location of the new dust collector on the east side of the original dust collector, and the other 1 needs to be newly built at the original dust removal location. Since the electrostatic precipitator of the sintering machine head is the best production equipment, in order to reduce the impact on the production time.

Construction plan: build a new dust collector in the open space on the east side, and connect the east flue to this dust collector for the first time after the dust collector is completed. Dismantle the original Dongtai dust collector and build another dust collector, after the dust collector is completed, the second contact will be connected to the west flue to the new dust collector, the second burner head electrostatic precipitator was completed at the end of 2009, and the design emission concentration of the dust collector is 50mg m3.

The electrostatic precipitator of the second and third burning heads can meet the new national standards under normal production conditions. However, the emissions of western burning and new burning cannot meet the requirements of the new national standards. Domestic and foreign sintering head flue gas purification all use electrostatic precipitator, the new national standard requires the emission to be less than 50mg m3, which is difficult to achieve at present, although the electrostatic precipitator increases to 4 electric fields, but the sintering head electrostatic precipitator is affected by the process temperature, humidity, specific resistance is fluctuating, and the emission of sintering head electrostatic precipitator is also fluctuating, especially the fluctuation of sintering production, sintering machine start-up and shutdown, etc.

At present, more than half of the sintering machines in the country have completed flue gas desulfurization, that is, the dust in the flue gas has been further processed by the desulfurization process after passing through the electrostatic precipitator, and the exhaust flue gas can fully meet the new national emission standards. According to the requirements of the national "Eleventh Five-Year Plan" emission reduction plan, the ironmaking plant began to adopt the Danish rotary spray semi-dry desulfurization process in 2009, and successively completed the flue gas desulfurization facilities of 6 sintering machines, and the dust emission of 6 sintering heads of the ironmaking plant after desulfurization bag dust emission of 30mg m3 fully meets the requirements of the new national standard. In order to meet the requirements of the new national standard of 30mg m3, the existing electrostatic precipitator can be increased and transformed

The first is to increase the circulation area, reduce the wind speed of the electric field, and prolong the residence time of the flue gas medium in the dust collector, which is equivalent to dismantling the existing dust collector and widening and heightening it on the original basis; The second is to increase the number of electric fields, the original dust removal is retained, and the original inlet or outlet bell mouth is removed and increased to an electric field, so as to increase the area of the dust collection plate of the electric field, prolong the time for the flue gas to stay in the electric field, so as to improve the dust removal efficiency; Another solution is the electric bag reform scheme: retain the original electrostatic precipitator foundation, shell, ash hopper, bell mouth and ash conveying system, only remove the plate line and rapping system of the original electric field, and remake the upper box to install the cloth bag, but due to the increased resistance of bag dust removal, the original motor needs to be increased. The above scheme is comprehensively considered from the stability, effect, investment, construction period, site, etc., and the electric bag modification scheme is the best.

The possible reason is that the success and mistakes are not summarized in time, and the purpose of doing the problem is to master more types of questions, summarize and summarize the ideas and methods of problem solving, that is, to truly master the ideas, methods, and process of solving the problem.

Everyone's learning method is different, if you brush the questions, it depends on the quality of the workbook and the publishing unit, whether it is authoritative. If it's an authoritative workbook that covers a wide range, then brush one or two workbooks and brush them several times until you understand them all.

I remember one time when my son was preparing for an interview, he was holding a thick question book, which was almost an inch thick. I asked him if he needed to look at anything else, and he said that almost all of the interview questions were made there. If you read this workbook, you will read it several times until you understand it all.

It depends on the progress of your review, to what extent you have reviewed, if you want to brush the questions, should you put the basic requirements of the postgraduate entrance examination, what are the question types and methods, and what methods have been figured out, so on this basis, everyone will brush the questions again, okay?

According to the progress of most students, I don't agree with brushing the questions in the basic stage, I suggest that you can start brushing the questions again around October, and at this stage you still come to toss the basic requirements for the postgraduate entrance examination.

Finally, to give some advice, the proposition method of math problems can be seen to be constantly updated over time, and basically will not be completely according to the test in the book, and the test will not be repeated except for the basic question type. Therefore, it is better to consolidate the foundation, the foundation, the foundation, the more conceptual the nature of the calculation, the more effort must be made, mathematics is also a sharpening knife and not cutting wood, and I don't think it is too much to spend half of the time reviewing on the foundation. I don't think it's necessary to memorize the steps to solve the problem, not because it won't be tested again, but to pay attention to other people's ideas, and the ideas will draw inferences.

Anyway, mathematics, it's really a sea of tactics, I know a few people who have a talent for mathematics, but it's just a little less than a little less problematic.

I am a graduate student in mathematics, as far as I am concerned, brushing questions is very important, but the premise is that you have to figure out the basic concepts, only in this way will the brushing efficiency be high, so you can brush the basic questions in the book first, figure out the basic knowledge points, and expand the brushing questions outward!

The more you brush the math questions, the higher the score will be for the graduate school entrance examination, the math brushing questions are important, but you must brush the questions with thinking, if you have no brains, it is better not to brush.

No, the most important thing in learning mathematics is that candidates need to understand, so you should also understand the meaning of these questions while brushing the questions.

It's not because blindly brushing the questions has no effect, you must know the type of questions during the exam. This is particularly important.

After every exam, many students will always say why they can't improve their grades after doing so many questions? In fact, there are several main reasons for the dislike of historical potatoes, so I will take you to find out about it!

Author |Paper cones.

1. Ignore the primary and secondary

Many times we don't have a good foundation for review, so we choose to do the questions, which has knowledge loopholes, so it is difficult to really do the questions right, the most important person is to review the basic knowledge, and doing the questions is just a means to assist us in learning knowledge and consolidating knowledge, so we must understand the knowledge points clearly and then do the questions well.

2. The topic is not "much" enough

The question is not done enough, "more" means that the various question types are not done enough, many people will brush the questions in favor of a certain type of question, and other students' practice questions are likely to be ignored, so the exercise will be reduced, so the exam will be overwhelmed.

3. There is no analysis and summary

No matter how many questions you do, if you don't learn something from the analysis and summary, then the effect on your performance is not very high, you must summarize and analyze the questions, especially the wrong students should focus on analysis, analyze the test points and the ideas and answering methods of the questions, and you can refine so many things by summarizing, and then you will know how to solve the same type of questions when you encounter them.

4. There is no plan for doing the question

We can start with the basic questions, and for the familiar question type, we can reduce the amount of questions and spend more time on mastering the unfamiliar or unfamiliar question types, so that we can make progress.

First of all, the math score is not good, brushing the question can play a certain effect, but to build on some foundation, if the student brushes the question for a long time in school, coupled with the teacher's explanation in class, the student's performance will indeed improve to a certain extent, and when he brushes the question, he has found the inspection point and quick solution of this type of question, which can ensure that similar question types can be done by himself, which can show that brushing has an effect, otherwise, brushing the question has no effect, just like some students just keep doing the question. If you make mistakes and keep correcting them, you will forget and won't do it in the next exam, so there is no point in brushing questions, and you must pay attention to ways and means to brush questions.

At this time, in the process of doing each question, you must conduct an in-depth analysis of the type of question you have made wrong, and see where you have a problem, whether it is the lack of knowledge points or the confusion of your memory points, or your carelessness, you must find the problem, and then make up for it in a targeted manner, so that you will become more and more proficient in the repeated brushing questions, and the correctness of this type of question can be greatly guaranteed. At this time, it is natural for grades to improve and debate.