How to prepare for the 20 17 senior high school entrance examination? Mathematics attaches great importance to learning skills and review skills. Mastering these skills is particularly important for candidates of 20 17, which may help you improve more points. The following are the problem-solving skills of political multiple-choice questions in the senior high school entrance examination. Welcome to reading.
0 1 Overall arrangement of answering questions in the examination room
1. After getting the test paper, candidates should not look at the big questions behind to prevent panic and interference. Some topics and figures are very similar to those usually done. If you don't see any similarity, you will form a mindset. Candidates can look at 1 to 5 questions, and try to get the answer as soon as possible a few minutes before starting to answer the questions, leaving time for later.
2. The answering process should be completed in order like the usual model test, and don't pick topics.
Candidates should not check while doing, otherwise there will be no time to do the following questions.
4. Do basic and intermediate questions, just hold your horses, concentrate and strive for success.
5. Answer the mid-range questions comprehensively, but don't repeat them to save time.
6. The first two questions of the last three questions must be done because they are sub-topics.
7. Pay attention to the writing layout: first divide the answer area into three columns, and then start writing from the first column on the left, so that there are some blanks after writing, leaving room for revision.
02 answering strategies for each question type
1, choose to fill in the blanks (1? 16)
Key points: pay attention to speed and accuracy; Prevent wrong answers by reciting them.
For the simple questions in front, do it at one go. Make three observations and pay attention to the placement position; Find the median, and pay attention to sorting from small to large (or from large to small); Look at the picture and talk about the topic, pay attention to the meaning and unit of the horizontal axis and the vertical axis; Find the range of the function independent variable, if the denominator is not zero, the number of roots should be greater than or equal to 0; Do the problem of moving point and function image, do you want it? Think more and count less? The first choice is exclusion method, the second choice is special value method, and the last choice is analytical formula method. Answers are usually selected from independent variables, special values of functions, image distribution, increase or decrease of functions, symmetry and so on.
For the fill-in-the-blank problem of writing functions according to conditions, choose the simplest function or fill it in the simplest way, and keep everything simple. If there is a problem of writing reasons and predictions according to known conditions in statistical questions, pay attention to using the data with known conditions, but don't have to use them all. Can be reasonable, can justify, pay special attention to the unit and accuracy. Mathematical thinking method pays special attention to classified discussion, remember? Not even a picture? Formulas, that is, questions without pictures, are easier to classify and discuss. If the questions related to ruler drawing require reasons, you can not write the proof process; If you encounter unfamiliar content, you can first prove the topic as a proof question, and then write the reason in brackets.
2, the basic problem (No.17? 22 questions)
Key points: the marking will strictly look at the format, requiring the whole process to be complete and not wordy, leaving time for the following questions.
Real number operation should pay attention to absolute value, simplification of quadratic root, trigonometric function of special angle, idempotent and other basic knowledge. , especially negative integer power, and it should be broken down and not jumped. Pay attention to the strict writing process of congruent proof questions, and you can't skip steps. Simplify the evaluation questions, some need to be directly substituted after simplification, some need to be substituted as a whole, and some need to use some techniques of algebraic deformation, such as setting k in comparative situations. Candidates should pay attention to simplification before replacing numerical values. If it is not simplified, points will be deducted. Fraction calculation is a general division, not denominator removal, so it should not be confused with fractional equation; The simplest result of algebraic expression operation cannot have parentheses; Write on behalf of the review? At that time? , and can't use? ∵? .
Pay attention to solving application problems:
(1) Review topic: If yes? Solving application problems with column equations? Then, it is necessary to list the solution of the equation;
(2) Examining and marking: combing words with lines, symbols or list boxes;
(3) Trial relationship: attention? how much is it? 、? Less? , is it? Yes, twice? Or? Twice this? Wait;
(4) Examining units: for example, meters/second, kilometers/hour. Unfortunately, every year, candidates will be deducted because of inconsistent units;
(5) Examination of questions: If there are two questions, don't miss the answer, such as seeking the original plan and actual working time;
(6) pay attention to the format:? Set, list, solve, test and answer? One step 1 minute, did you do it? Double test of fractional equation? , write when checking? After testing, x= is the solution of the original equation, which is consistent with the meaning of the question? , write when answering questions? What was the original plan? Instead of writing? .
3. Intermediate solution (No.23? 26 questions)
Key points: the question type is obvious, and you can use the usual problem-solving method; Control the answer time and don't get into trouble.
The problem of inverse proportional function comprehensively examines the knowledge of inverse proportional function, straight line, similar triangles, special triangle, area, etc., and we can consider the idea of classified discussion. Do problems related to circles, and prove that the problems pay attention to three kinds of judgments of tangency: general definition, algebraic definition and geometric definition (subdivided into whether a straight line intersects with a circle or not). There are usually unknown equations in calculation problems, so the overall model identification is selected first, and then the detailed calculation is carried out. Although the number of words and data is large, the probability and statistics questions belong to mathematics? Text reading? , not? Symbol reading? It's not that hard. When you answer a question, you should know the general meaning first. It's similar to English reading questions. You can look at the options first, then find the text, supplement other data according to the topic list, break down the difficulty at any time, and pay attention to the unit conversion.
The empirical problem of mathematical activities follows two principles: right? Xiaoming? The letter is not complete, why don't you get to know it first? Xiaoming? Practice and then imitate; Grasp the function and quadrilateral as a whole, and use the learned function expressions and properties to solve new function problems. Pay attention to the nature of writing functions, and write the simplest to save time; Can't write? Irregular image? 、? Irregular image? 、? Incomplete image? Wait, these expressions are not functional properties.
4. The last three questions (No.27? Question 29)
Key points: The first two questions are sub-topics, so you must answer them. Really? Guess to prove it? Law; The conclusion or method of the previous question can usually continue to be used. If you can't do the third question, look back at the first two questions. Experience the conclusive content in the first two questions, first analyze the conditions for the conclusion to appear, and then construct this condition, then the conclusion will naturally come; Pay attention to the schedule. For example, if you do question 28, draw a picture first and then answer the relationship score. Other questions won't, so put them down quickly and turn to the first two questions of question 29. If it is successfully completed, you will finish the third question of question 29 and the third question of question 28 in turn, so that you can get most of the scores, which will not be a pity.
What should we pay attention to when doing geometry comprehensive problems? Model recognition? Lenovo usually summarizes graphic attributes and combination characteristics. For example, what do you think of when you meet a quadrilateral? Build a system, string diagram, hand in hand? Mouth formula; When you come across an axisymmetric figure, think about it? To achieve symmetry, the high line is often symmetrical and often changes with the area? Formula. Write down the main steps to solve the problem when answering; Overcome psychological barriers and dare to write.
What is the formula for the newly defined' question type'? Read, flip, draw, lift, reverse, divide and follow? First read word for word, translate the mathematical symbol language into concise and easy-to-understand words, then draw a picture, and then give examples to help understand the abstract definition. We should also pay attention to the reverse application of the definition, consider classified discussion and find the trajectory of the moving point.
03 check sequence
1. Check the first two questions of the big question while doing it: If the first two questions are wrong, the following questions are wrong. If found in time, it will save time.
2. After the completion of the whole volume, check simple calculation problems: radical calculation problems, simplification problems, equation solving problems, substitution evaluation problems, equation application problems (units, tests), etc.
3. Check the fill-in-the-blank questions and multiple-choice questions (multiple points): there are no pictures, a large number of questions and many question marks.
4. Check the writing process: Have all the conditions been written? The words in the title are the conditions.
Finally, remind candidates that basic questions are fundamental and improving one-time accuracy is the key. Will it be two? Inequality? To the candidates who are preparing for the exam: Do the right questions? Feeling bad about getting high marks? Candidates who don't do well in the exam should learn from experience, sum up methods, overcome weaknesses and write as much as possible in order to win the exam.
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