Some candidates' moderate attention is not enough, so hurry to see the desire to write. This question of conditions and requirements is not understood. As for how to be excavated, the implicit conditions of topics that stimulate the idea of solving problems are more problematic, so solving problems is natural and wrong. Only by patiently and carefully examining the questions and accurately grasping the keywords and quantities in the questions (such as "at least", "0" and the range of independent variables, etc.). ), and get as much information as possible to quickly determine the direction of the solution. relationship
"Doing" and "scoring" are your strategies for solving problems, which are mainly expressed in accurate and complete mathematical language. These are some candidates who are often overlooked. Therefore, in the case of a large number of "no" on the surface of the test paper, the candidate's own evaluation score is far from the actual score. For example, many people lose more than 1/3 in solid geometric parameters such as "jump", and the viewpoint of algebraic parameters "representative certificate" and even ingenious problem-solving ideas are correct, but another example of poor score due to the accurate translation of graphic language into "literal language" is that many candidates managed the image transformation of 17 trigonometric function last year, which was "a good one"
Three kinds of fast quasi-relations
Headlines, in the case of tight time, the word "quasi" is particularly important. The only "accuracy" is scoring. Now you don't have to consider taking the time to check. Only "accuracy" and "speed" are the results of usual training, not problems that can be solved in the examination room. If you try to be quick, you will only make mistakes in the end. I miscalculated. Although it is not difficult to list piecewise analytic functions in the application problem of 2 1 recently, a considerable number of candidates are rushing to solve the problem correctly with the successor function of quadratic function or even linear function, which takes time and calculation, but there are also cases where the access point is small and does not meet the actual level of candidates. Slow down, more accurate; On the contrary, hurry up, wrong, it took a long time.
There are four problems, which are prone to problems. When you get the test paper, you should browse the whole volume. Generally speaking, the hard answer is simple, and the order of fans should be easy. The order of examination questions in recent years is not difficult. For example, last year's management question 19 was more difficult than reasonable reason 2 1, so the answer within a reasonable time should not be stuck and protracted. If you spend time instead of getting points, the champion will not be postponed again. In the past few years, the mathematical problems from "topic gatekeeper" to "multi-topic gatekeeper" have clear levels and wide entrances, which are easy to start, but difficult in depth. What is the difficulty of the solution? So seemingly simple questions will have a "bite" level, and seemingly difficult questions can also be scored. You can't take the "easy" questions lightly in the exam, and you are not afraid to think calmly and analyze them carefully when you see the "difficult" questions with new faces.
About the title of the finale
Candidates are most afraid of the finale of the math test paper, and it will be very uncomfortable not to touch it. In fact, it is not difficult to analyze the last question in the past years' exams. This can reduce the psychological pressure of the finale and find a new way to deal with it.
The difficulty agreement of the title of the finale
The final exam questions of the mid-year senior high school entrance examination are generally composed of three small questions. (1) simple questions, the scoring rate is above 0.8; (2) The questions are a little more difficult, and generally belong to various traditional questions, and the scoring rate is between 0.6 and 0.7. (3) The questions are difficult and require high ability, but the scoring rate is mostly between 0.3 and 0.4. In the past ten years, the last small problem below 0.3 has only happened occasionally, but once it happens, it will attract the attention of all parties. The difficulty of controlling the topic of the finale has become the understanding of the conference proposition group. "Low starting point, slow slope and a little cocky" has become a major feature of the design paper. In the past, most of the finale questions in Shanghai Mathematics Test were fair and bizarre, and the target rate was stable at 0.5? Candidates with an average score of 7 or 8 between 0.6. So the title of the finale is not terrible.
Never guess the title and gamble on the topic.
The finale problem is generally a comprehensive problem of algebra and geometry. Over the years, the main methods of function and geometry have been used, such as triangle, quadrilateral, similar number and circle. If you think this is a structural ending, you are all wet. Geometric equations and graphs are also common. For example, in last year's exam, the topic of 25(3) was to solve such problems according to algebraic equations listed in known geometric conditions. In other provinces, there have been many papers in recent years. In a new topic, such as last year's Beijing finale, graphic transformation in dynamic geometry, some of the same factors are discussed together in graphics, operation, observation, exploration, calculation and proof. The dynamic geometry of acute triangle may play an important role as a tool, and the finale of geometric calculation is budding. In short, the finale is comprehensive, so don't always stare at a certain way. You can't rely on guessing and gambling to deal with the finale.
Structural analysis illustrates this relationship.
It is very important to pay attention to its logical structure and find out the small problem of the relationship between "parallel column" and "enterprising" when decompressing the axis problem. Like last year, the three sub-questions (1), (2) and (3) of Question 25 are parallel and a big problem, which is called problem-solving conditions (1) and (2). The conclusions can solve independent conclusions (2) and (3) and form three problem-solving abilities. Another example is Question 25, 2007 (1), (2) the "progressive relationship" of the two small questions, and the known conditions of the conclusion of (1) allow that the conclusion of (1) is one of the necessary conditions for solving (2) unless it is known. However, (3) And (1), (2) are "parallel relations" (1), the fixed point p of ray AN, and (3) the fixed point p of ray an is known. It cAN be extended not only to ray AN, but also to reverse an line or point a, so the classification discussion coincides with mine. If we take the conclusions of (1) and (2) as conditional solution (3), we will fall into a "trap" and cannot extricate ourselves.
The strategy must be grasped.
Students are afraid that the title of the "Grand Finale" may be related to the tactics of sea of people. It is harmful to challenge blindly in exams. In newspapers or other provinces and cities, the theme of the test paper was simulated in previous years, and special attention was paid to whether it exceeded this year and was within the test scope of the exam. For example, the quadratic relationship between roots and coefficients of this year's algebra, the analytical expressions of two quadratic functions and vertex types, the judgment of the tangent of the geometry of auxiliary functions to the circle, and the nature and judgment of the four-point circle, so these can not be regarded as the finale of the constructor. "In order to cope with the finale, in the exam, teachers can choose 20 students according to the actual situation, but they don't always insist. Some students can only ask him to do (1) or (2) questions. Pursue the "new" demand blindly and ignore the foundation to cope with a lot of review time, which is only 65,438+00% of the final topic of the whole volume, and the result will not be worth the candle. Practice has proved that quite a few students lost the idea of the "golden mean" in the final review stage, but they lost the very basic concepts and simple calculation errors. It has a solid foundation to summarize that teachers should help students master methods and guide them to use knowledge flexibly. Experienced teachers often break down the last question into several comprehensive questions and then combine them, or some other difficult "fill-in-the-blank questions" in other provinces and cities are upgraded to "short answers", "familiar questions" and "strange questions", so that students have less time to practice. Viewpoint: the ability to solve problems in an all-round way is not reliable for a while, but the total review in the accumulation stage of training depends on it. Most students give up some big challenges and problems. Doing some minor questions about mid-range variant topics will help their interest.
Don't be too affected by the affected area test.
It is said that this is a popular "finale" that really embarrasses our students. Judging from this year's comprehensive examination paper, some big endings are too big, so we should use A4 pages or more to advocate the process of solving problems through explicit quotation. In order to cooperate with the finale questions in the exam, some questions put forward the test requirements of thinking. If there are problems, (2) and (3) should be divided into several "classified discussions". Junior high school mathematics method stage only requires students to understand the basic mathematical thinking mode. In the comprehensive investigation, only basic knowledge, basic skills and basic methods can be investigated, which have been infiltrated and embodied. The proposition of compassion is not called "edge ball", but "deep hole digging" The math volume hopes to control the difficulty of the last two questions this year, not the "double ending".
For the students who failed before the final exam, I say to you, come on, don't be depressed because of this exam, the final exam didn't do well or the score was extremely low, so as to improve confidence and courage. You should give full play to your advantages, pay more attention to the foundation and try your best to do a good job in the topic. You will do well. At the end of trying to recover, you will get good grades in the exam. I hope you succeed in the exam!