Math:

1. Memorize the formulas and definitions in the textbook. If you are proficient, you can open your mouth and come.

2. Do more exercises in order to master the learning skills and tricks from practice. Different problems have different methods and skills, and the problem of moving points in functions is a hot topic now. Do more, but don't do too difficult questions, focus on learning. The focus of junior high school mathematics learning is function (including linear function, proportional function, inverse proportional function and quadratic function), with emphasis on meaning and nature; Triangle (including basic properties, similarity, congruence, rotation, translation, symmetry, etc. ); The nature, definition and area of quadrilateral (including parallelogram, trapezoid, prism, rectangle, square and polygon);

Physics:

The main thing is to remember the formulas and definitions in the textbook (understanding is not rote learning) and read the experiments in the textbook. To understand completely, just fill in all the experiments in the book, which is the focus of the exam. Physics includes acoustics, optics, electricity, heat and mechanics. Only these parts.

1. Acoustics focuses on principles: timbre, tone, loudness, etc.

2. Optics focuses on the properties of light: reflection, refraction, principle of plane mirror, lens imaging (emphasis) and its application.

3. Electricity is mainly the series and parallel properties of current, voltage and resistance, electric power, electric work, Joule's law, electromagnetic properties, phenomena, experiments, unit conversion (there will be many problems here, which is the key point), formulas should be familiar, and deformation formulas should be used quickly.

4. Heat is mainly the change of material state and the application of thermodynamic formula; Give you a formula that is not in the book but was tested in the exam: Q=mq, which is the calculation formula of solid heat. Q is heat, m is mass, and q is calorific value.

5. There are many mechanics: simple machinery (including lever, pulley, shaft, slope, work, power, energy conversion, etc. ) mainly master formulas, derived formulas, the relationship between formulas, experimental methods and conclusions.

Chemistry:

1. Be familiar with the name of element 1-20 and the writing of element symbols. It is necessary to write chemical formulas and equations correctly and memorize the common names, colors and smells of various drugs. Mastering the calculation of mass fraction is the key. There is only one chemical calculation in junior high school, so it is necessary to know about it. The preparation and collection of various gases are the key points, and more exercises are needed to master the questions.

2. Chemical formulas of commonly used substances

Quicklime: CaO slaked lime, limewater, slaked lime Ca(OH)2, patina and malachite.

Basic copper carbonate: Cu2(OH)2CO3 soda ash, soda: Na2CO3.

Hydrogen peroxide: H2O2 alum: KAl(SO4)2? 12H2O

Dry ice: solid carbon dioxide, soda lime, sodium hydroxide and calcium oxide mixed with sodium hydroxide and calcium oxide.

Salt: sodium chloride baking soda: sodium bicarbonate

Caustic soda, caustic soda, caustic soda: NaOH biogas: CH4

Soda, sodium bisulfate Na2S2O3? 5H2O

Marble, limestone, calcium carbonate CaCO3 acetic acid: CH3COOH

3. Descriptions that often appear in chemical experiments

NH3 17 Ammonia Colorless Irritating Gas HCl 36.5 Hydrochloric Acid Colorless Volatile Acid

CuSO4 160 white solid copper sulfate/blue solution H2SO4 98 sulfuric acid colorless corrosive acid

BaSO4 233 barium sulfate white (solid) precipitate FeSO4 152 light green solution of ferrous sulfate (crystal)

ZnSO4 16 1 zinc sulfate white (colorless) crystalline NaOH 40 sodium hydroxide colorless corrosive alkaline solution.

KOH 56 Potassium hydroxide colorless corrosive alkaline solution Mg(OH)2 58 Magnesium hydroxide white (solid) precipitate.

Ba(OH)2 17 1 barium hydroxide colorless solution H2O2 34 colorless liquid hydrogen peroxide.

FeO 72 ferrous oxide black solid Fe2O3 160 iron oxide red solid powder

MnO2 78 Black solid powder FeCl3 162.5 Ferric chloride light yellow solution

FeCl _ 2127 Light green ferrous chloride solution CuO _ 80 copper oxide black solid powder

CaO 56 calcium oxide white solid Cu2(OH)2CO3 basic copper carbonate green solid powder

Language:

Grasp the key points and skillfully use methods

Now the senior high school entrance examination has entered the sprint stage. At present, students have two kinds of mentality in reviewing Chinese: some students think that there are many Chinese knowledge points, and the senior high school entrance examination pays attention to students' extracurricular migration ability, and the textbook content is less, so they often focus on some "crash" subjects, which makes them impetuous when reviewing Chinese; There are also some students who think that the exam has no effect after carefully reviewing the textbook knowledge and doing a lot of reading questions. They felt that there was no way to start reviewing Chinese, so they simply gave up. These practices are very undesirable. In fact, Chinese, like other subjects, has its own knowledge system and review rules. Judging from the students' review in previous years, in the sprint stage, if we can follow the teacher's review plan, review and form a knowledge network, answer questions according to the correct skills and methods, and be sure before the exam, we can achieve ideal results in the exam.

So, what strategies and methods should be paid attention to in the final sprint stage?

Let's briefly talk about the practice of our school teachers in the final review stage:

First of all, we should carefully "thoroughly" the examination questions of the past two years. In the past two years, the structure, content, type and quantity of senior high school entrance examination questions have remained basically unchanged. The examination paper is divided into four sections: accumulation, classical Chinese reading, modern Chinese reading and composition. The content of the examination questions is relatively stable, and the purpose of the examination is clear: from the accumulation and application of famous sayings and sentences in and out of class, to the reading of classical Chinese in and out of class, to the reading of modern Chinese after class, and finally to the writing of topic composition. Pay attention to the examination of students' knowledge accumulation, especially the examination of students' ability to analyze and solve problems in combination with life practice and life experience. How to analyze the examination questions in recent two years? Now only four parts of the test paper are briefly explained.

First, the accumulation part.

The scope of the exam is basically the famous sentences that are required to be recited in the reading questions of junior high school teaching. Reciting and reviewing should not only strengthen memory, but also understand it and use it flexibly. It is not only memorizing articles, but also implementing every word, especially the words that often make mistakes in dictation. We should always "review the mistakes". Remember: one word difference, the whole game is lost.

Second, the classical Chinese part.

The scope of classical Chinese examination in class is teaching and reading articles in junior high school. Pay attention to the key points when reviewing. According to the examination scope and requirements of the syllabus and your familiarity, you should choose the key review content.

Generally examine the meaning and usage of function words and content words commonly used in classical Chinese. Content words often examine words with polysemy, different meanings in ancient and modern times and flexible parts of speech; The focus of sentence examination is the sentence structure and sentence meaning of key sentences; The examination of the content is basically the same as that of modern Chinese. From words, phrases and sentences to literary common sense, thoughts and feelings, expression techniques, etc. We should find out the main points and sum up the rules. Second, we must choose a good title. Choosing beautiful articles in teaching and reading content is often the most typical article with the widest knowledge coverage in classical Chinese, so that review can get twice the result with half the effort.

In the past two years, most of the extracurricular reading of classical Chinese in the senior high school entrance examination chose story paragraphs. The content is relatively simple, and the content of the investigation is basically the same as that in the classroom. When doing problems, we must pay attention to the connection with the texts or knowledge points learned in class, and pay attention to the migration and application from class to extracurricular.

Classical Chinese reading problems are mainly divided into two categories. One is translation. The solution to this kind of problem is:

(1) Have a general understanding of the full text and grasp the text tendency. (2) Understand the meaning of the translated sentence context in detail, translate it word by word, and make corrections, reservations, deletions, additions and adjustments. When translating, pay attention to the key words in the sentence, which are often the score points. (3) The meanings of words in the text can also be deduced from modern words and idioms. (4) In addition, we should pay attention to some special phenomena, such as flexible use of parts of speech, different meanings in ancient and modern times, words that pass through falsehood, and compound words with partial meanings. (5) If literal translation fails, use free translation. We must infer from the context, not stick to the original structure, and boldly speculate in connection with real life. The second is enlightenment. When answering such questions, we should pay attention to the ideological tendency, grasp the author's basic emotional position, contact the main plot and main characters of the article, and grasp the key sentences to think and answer from multiple angles and sides.

Third, the reading part of modern literature.

It is necessary to seize the "test center" and master the answering skills. In the past two years, most of the modern Chinese reading tests in the senior high school entrance examination are a discussion-oriented essay and a natural science article. Therefore, in the final review, we should choose these two types of articles as much as possible and practice in extracurricular selection.

In addition, in the setting of reading topics, it is generally examined in the order of "whole-part-whole". When doing the problem, we should firmly remember that "the answer is not in your mind, but only in the original text", which is also the only criterion for us to test the effect of solving the problem. The examination of any article focuses on two aspects, one is the screening of information, and the other is the understanding and analysis of reading materials.

In reading review, we should pay attention to the relationship between sentences and paragraphs, understand the author's point of view and the writing intention of the article, and grasp the article as a whole. First of all, we should understand the two questions "What did you write" and "Why did you write". The most important and effective way is to "get off the pole by boat"-find the answer in the original text. For example, the topic of overall perception often requires candidates to answer questions such as "what is the main content of the article" or "what is the author's main point of view".

When doing this kind of questions, we should consider three aspects when answering them: looking at the topic, looking at the beginning and end, looking for argumentative papers and lyrical sentences. These commonly used methods and ideas must be memorized. For another example, you can answer the question of "understanding the meaning and function of sentences" that students think is the most difficult to answer: first, observe the characteristics and position of sentences, and analyze their ideographic and structural functions; Combined with context, grasp the most critical words in sentence expression and point out their contextual meanings.

This kind of topic mostly examines sentences that play a key role in the expression of the article, or sentences that use rhetorical devices such as metaphor and questioning, so analyzing and grasping the characteristics of sentences is the key to doing this kind of topic well. All kinds of questions have certain ideas and methods to answer, don't blindly do reading questions.

Fourth, the composition part.

"Topic" composition is still the mainstream of this year's exam. In the final stage, we should read more books and newspapers, broaden our horizons, understand the information of the times, grasp the pulse of the times, learn the language style and organizational ability of others, accumulate materials for writing and replenish fresh blood. Although I am nervous about studying, I still have to "squeeze out" ten to twenty minutes to read books and newspapers every day. In writing, we should be good at focusing on the big picture, starting from the small, seeing the big from the small, and learning to "see the sunshine with a drop of water" and "say human feelings with half a petal"; Be good at association and publicize personality. Let the article reflect your sincere feelings and rich literary accumulation, so as to have both literary beauty and rich life.

Secondly, we should develop good study habits in review. Over the years, there are some problems in the answer sheets that candidates don't read the original text carefully and can't carefully examine the questions. When doing reading exercises at ordinary times, we must form the good habit of carefully examining questions, accurately grasp key words, and then answer. In addition, attention should be paid to writing. If you scribble at ordinary times, there will be typos accumulated and you will lose points in writing. As the saying goes, "habit becomes nature", if you can't develop good reading and writing habits at ordinary times, you will lose some unnecessary marks in the exam.

In short, "many a mickle makes a mickle" is an important feature of Chinese learning. To improve Chinese performance, we need solid basic knowledge, correct thinking in answering questions, and strong understanding and expression skills. Of course, students can focus on reviewing according to their actual situation. If all three can be taken into account, I believe you will achieve excellent results in the senior high school entrance examination.