How to teach yourself quickly and firmly? Such as Chinese, English, chemistry, mathematics and physics.

Chinese learning methods 1) read more books: you don't have to read Lu Xun and contradictory novels, which may not be effective. Reading more is based on intensive reading. Be careful when reading the article.

Meaning its connotation. Throughout high school, "I" read the articles repeatedly, marked the key points, and wrote down my feelings and thoughts. 2) Practice more collaboration by keeping a diary: you can write essays, essays or novels, and revise them repeatedly after writing, so as to really improve your writing ability. If you think too much, it will be useless to learn without thinking. 3) Pay more attention to observation: You will find that there are many materials in life that can be used as writing materials. 4) Chinese sports training: The more you do, the better. Doing problems is to master ideas and methods. The process of Chinese learning is a process of accumulating knowledge, which can be summarized as "three steps" (understanding-memory-application). Understanding: of course, Chinese learning needs to read more extracurricular books, literary papers and even slogan advertisements. The ancients said that "as long as you pay attention, you can learn everywhere", and you should receive it all the time through multiple channels.

Or I didn't understand it at all, so I entered middle school and silently wrote the ancient poem "I miss my relatives twice during the festive season". Write the word "time" as "preparation", "acropolis welcomes rain lightly" and "light dust" as "morning". I think if students really understand this,

The meaning of a poem won't make such a mistake. The main reason why students now have a lot of typos is that they are very strange and don't understand the meaning of words. In the process of Chinese teaching, paying attention to strengthening this aspect of teaching will undoubtedly receive good results.

Two memorization: in teaching, it is found that students forget what they have learned before, and forget what they learned at the beginning of the semester. As time went on, they no longer had any impression. The main reason is that they don't read attentively, but remember attentively, except reciting praise on the basis of understanding.

If necessary, you should take notes. It is better to remember than to write it down. It's better to copy it by hand than to read it a thousand times. Teacher Xu Teli has an important reading experience: "No pen and ink, no reading". It is precisely because we now require students to write reading notes after class.

Because of this, it is a good way to accumulate knowledge.

Application: As the saying goes, "apply what you have learned", in a sense, the accumulation of knowledge and the quality of application are reflected in the composition. The problem among students now is that learning belongs to learning, writing belongs to writing, learning and writing are completely separated, and they will not imitate.

The concept and layout of famous articles, after learning so many beautiful words, will not be flexibly applied to their own articles, and the content of the articles is empty and boring. Learning and use complement each other, and common use can achieve the purpose of consolidating knowledge, and learning provides a source for writing.

Living water. Learning Chinese is difficult because you need to accumulate it persistently. It is difficult to follow the law of Chinese learning, use the method of "understanding, remembering and using", insist on reading, thinking and writing more, and be a conscientious person in life. Then you can read and write.

The intensity will gradually increase.

Mathematics learning method

According to the characteristics of psychological theory and mathematics, the following principles should be followed in analyzing mathematics classroom learning: the principle of motivation, the principle of gradual progress, the principle of independent thinking, the principle of timely feedback and the principle of integrating theory with practice. If you make a mistake, you can consult your teacher and write down the wrong questions in your notebook so that you can review them later and avoid making mistakes again.

Mathematical research

The investigation of mathematics is mainly about basic knowledge, and the difficult problems are only synthesized on the basis of simple problems. So the content in the textbook is very important. If you can't master all the knowledge in the textbook, you won't have the capital to learn by analogy.

It's best to preview the contents of the textbook before class, otherwise there is a knowledge point that can't keep up with the teacher's footsteps in class, and the following is unknown. This vicious circle will start to get tired of mathematics, and interest is very important for learning. Targeted exercises after class must be done seriously and not lazy. You can also calculate the classroom examples several times when reviewing after class. After all, in class, the teacher is calculating and explaining problems, and the students are listening. This is a relatively mechanical and passive process of accepting knowledge. Maybe you think you understand it in class, but in fact, your understanding of problem-solving methods has not reached a deeper level, and it is very easy to ignore some difficulties that will inevitably be encountered in the real problem-solving process. A good brain is better than a bad pen. For solving mathematical and physical problems, it is not enough to rely only on the general ideas in the mind. Only through careful written calculation can we find the difficulties, master the solutions and finally get the correct calculation results.

Secondly, we should be good at summarizing and classifying, looking for the * * * relationship between different types of questions and different knowledge points, and systematizing what we have learned. To give a concrete example: in the function part of senior one algebra, we have studied several different types of functions, such as exponential function, logarithmic function, power function, trigonometric function and so on. But comparing and summarizing, you will find that whatever kind of function we need to master is its expression, image shape, parity, increase and decrease and symmetry. Then you can make the above contents of these functions into a big table and compare them for easy understanding and memory. Pay attention to the combination of function expressions and graphics when solving problems, and you will certainly get much better results.

Finally, we should strengthen after-school exercises. Besides homework, find a good reference book and do as many exercises as possible (especially comprehensive and applied questions). Practice makes perfect, thus consolidating the effect of classroom learning and making your problem solving faster and faster.

English study

As a language, English, like Chinese, needs a lot of reading, writing, listening and speaking training to learn. Put yourself in an English environment, improve your listening, speaking, writing and reading abilities, and cultivate a good sense of language. Generally speaking, English learning can be divided into three parts: pronunciation, vocabulary and grammar, which are interrelated and intertwined.

Phonetics is mainly to remember some general rules by combining vocabulary, and pay attention to writing down those special irregular pronunciations at any time in daily practice, so that basic vocabulary, especially some special vowels and consonants, can be spelled correctly.

Vocabulary, mainly textbook vocabulary, and then expand on this basis. Remember a word, you can think of other forms of the word, and you can also think of a group of words with the same pronunciation rules or some connection in pronunciation. The mastery of words, especially verbs, should be recorded in sentences and texts in units of phrases or sentences.

Grammar should be combined with a lot of reading and practice, especially to familiarize yourself with the texts and example sentences of various sentence patterns and recite them as much as possible, so that you can bypass the exam and solve many familiar problems. At the same time, extensive reading can enlarge vocabulary, train reading speed and meet the needs of college entrance examination.

The study of physics

I have heard of the "three-more method" of "understanding more, practicing more and summing up more" summarized by a middle school student in Shanghai. I think this method can summarize the main points of physics learning in senior high school.

Understanding is more about previewing, attending classes and reviewing, and understanding what you have learned from different levels and angles. Preview can be divided into rough reading and intensive reading. Take a cursory look at what you want to learn first, and circle the important parts in the form of subtitles. Then read the circled part carefully and have a deep understanding, that is, intensive reading. In class, you can listen to the teacher explain the difficult points and answer questions purposefully. Only in this way can we understand knowledge more comprehensively and thoroughly. In after-class review, in addition to understanding and memorizing formula theorems, we should also deeply understand the teacher's lecture ideas and the "central idea" of solving problems, that is, grasping the knowledge points of examples and applying formulas of what theorems to make them orderly and procedural.

More practice refers not only to the practice of consolidating knowledge, but also to the "practice" of psychological quality. To strengthen the practice of attention, we should not only complete the exercises in class seriously, but also complete a certain amount of extracurricular exercises. However, simple "sea tactics" is not desirable, and some representative questions should be selected. Students with a good foundation have to do some comprehensive problems and application problems. In addition, Pingyue should pay attention to adjusting the mentality and cultivate a calm and confident psychological quality.

To sum up, we should first classify and sort out the classroom knowledge in detail, especially the theorem, deeply understand its connotation, extension, derivation and scope of application, sum up the relationship between various knowledge points, and form a knowledge network in our minds. Secondly, we should analyze and summarize the solutions to various problems. Another kind of summary is also very important, that is, after the usual practice and examination, analyze your own mistakes and weaknesses in order to overcome them in the future.

Chemical Research

To learn chemistry, we must grasp the foundation, ideas and laws. Paying attention to the study of basic knowledge is the guarantee of improving ability. Learn the basic concepts of chemical terms such as element symbols, chemical formulas, chemical equations and properties of elements and compounds. To do problems, you should be good at summing up the types of questions and solving problems. There are inherent laws between chemical knowledge. If you master the rules, you can control and remember knowledge. Such as the general law of valence, metal elements usually show positive valence, nonmetal elements usually show negative valence, the valence of simple elements is zero, and many elements have valence changes, and the valence States are different under different conditions.

There is a saying about chemistry that chemistry is a liberal art in science. Because chemistry has a lot to remember and is an experimental subject, we should pay attention to the combination of reading, hands-on and writing in the learning process of chemistry. You should deduce, calculate, write structural formulas, write chemical equations, or do experiments yourself to verify, deepen your impression and help you understand. Sometimes you have to look for information and supplement some materials. At the same time, in chemistry learning, it is a basic activity method and a basic method to improve the effect of chemistry learning to put forward the contradictions within or between chemical things after thinking, that is, to study and solve chemical problems by yourself or to ask others for help when they can't solve them.

(1) Prepare well.

Preview is self-study before class. Refers to reading a new lesson independently before the teacher gives a lecture. A preliminary understanding of the content is a process of preparing for accepting new knowledge in class. Some students, because they don't have the habit of previewing, know nothing about what the teacher is going to say in a class, waiting for the teacher to give a lecture. Listen to the teacher and do as the teacher asks, which is dull and passive, lacking the enthusiasm and initiative of learning. Although some students can preview, they seem to just skim through the books without thinking or analyzing. This preview has no effect at all.

1. Benefits of preview

(1) can find the weak links in their own knowledge, and make up this part of knowledge before class, so as not to become a stumbling block when listening to lectures. In this way, new knowledge will be understood smoothly.

(2) It is beneficial to listen to the teacher's ideas in class. Strong selectivity to the teaching content. Clear what knowledge should be put into the main energy to strengthen understanding and digestion; Where to take notes, be conscious.

(3) Preview helps to clarify the key points and difficulties, and is convenient for attending lectures and asking questions with questions. Focus on the difficult points. This is easy to solve doubts, sounds relaxed and interesting, thinks smoothly and actively, and has a high learning effect.

(4) Preview can improve the level of note-taking. Because of the preview before class, the content and blackboard writing are very clear to me. In class, you can not write down or write down the contents of the book, but focus on the contents that are not in the book or that you are not clear about, as well as the key issues that the teacher reminds you repeatedly. So we can spend more time thinking and understanding problems.

2. Several problems that should be paid attention to in the preview.

(1) Reading, thinking, asking questions and memorizing should be carried out simultaneously in preparation for the exam. You can read as much as possible in the textbook. You don't need to fully understand it, and you don't need to delve into the problem. You just need to mark different symbols with a pen. Write down the questions you don't understand as the focus of the class. But you must know what you have learned and the small problems that the teacher can't tell, so as to eliminate the "obstacles".

(2) If I didn't have the habit of previewing before, I want to change my method and preview before class, but I can't spread it all at once. Every course is previewed in advance. Doing so will feel that there is not enough time. It looks very nervous and can't achieve the preview effect. Therefore, at the beginning of preview, we should first choose one or two subjects that are difficult for us to learn, wait until we have tasted the sweetness and gained experience, and then gradually increase the subjects when time permits until they are fully rolled out.

(3) Preview should be carried out after the completion of the day's homework. If you have more time, you will preview more courses and drill deeper; On the contrary, just preview a few courses less and drill a little shallowly. You must not be busy previewing before you finish your study tasks every day, which will disturb the normal learning order.

(4) Students with poor learning don't preview before class and don't understand in class. After class, they still need to spend a lot of time filling in the blanks and doing their homework. They are so busy all day that they can't find time to preview. In fact, the fundamental reason for such poor students is that they do not preview. Learning consists of preview, class, review and homework. Insufficient preview will affect the smooth progress of the following links. These students must be prepared to suffer more in the short term. After finishing your daily study tasks, you should arrange some time for preview. Although it takes time, I can understand it in class, which reduces the time wasted because I don't understand it in class. At the same time, it can also reduce the time of sorting, digesting and homework after class. After a long time, normal operation will change the passive situation of learning, and there is no need to work overtime anymore.

3. Preview requirements

(1) Pay attention to actual effect, not become a mere formality. Arrange your time according to your study plan, don't focus on one thing at a time. Preview is usually arranged on the night before the new class. In this way, the impression will be deeper. If the new lesson is difficult, you should preview more time; If it is difficult, you should spend less time previewing. We should focus on those subjects that are difficult for us to learn, and it is our turn to teach new courses for preview, while other subjects only need general preview. Some subjects can also use Sunday to concentrate on previewing the courses to be taught next week, reducing the burden of previewing every day.

(2) The task of preview is to understand and perceive the content of the new lesson (such as concepts, definitions, formulas, demonstration methods, etc.). ) through the preliminary reading, so as to clear the way for a smooth understanding of the new lesson. The specific tasks are: ① Review, consolidate and cram the old knowledge you have learned, find out the problems you don't understand in the new lesson, and write them down thoroughly. ② What is the basic content in the new lesson? What have these knowledge contents developed on the original basis? And find out the key points, difficulties and incomprehensible places in the book. (3) When previewing, we should combine watching, thinking and doing. Look: Generally, read the new lesson through, and then underline the important contents in the book with a pen. If you need to check, check; If you need to think, you must think seriously; What needs to be remembered should be written down. Thinking: It means that if you want to think sometimes, you should read with your head down, think with your head up, write questions by hand and think with your head. Do: In the process of reading, you need to make preparations and try to do exercises after the textbook. Answer questions and answers. If you can't do it, you can preview it again or write it down. Ask the teacher when he is listening or teaching. After previewing, close the book and make a summary. Doing so can make you have a deeper impression on the new textbook.

(2) Pay attention to lectures

Students spend most of their time in the classroom. Therefore, attending classes is the central link for students to accept teachers' guidance, master knowledge and develop intelligence. This is an important way to acquire knowledge. It is the key to ensure efficient learning. When listening to the class, some students listened attentively; Some people are distracted, depressed and dozing off. Some are like tape recorders, listening and recording all; Some listen and write down, and what the teacher says can basically be written down; Some mainly listen, think while listening, and write down the questions; Some don't remember at all, just listen; Some people think while listening and rowing. When thinking, some think about the content of the class, some think about the knowledge system related to this class, some think about the teacher's ideas, and some compare their own ideas with the teacher's ideas.

So, how can we achieve the purpose of listening to a good class? The general requirement is to grasp the different characteristics of each subject, listen with questions, listen clearly to the content, remember the main points, grasp the key points, pay attention to the teacher's teaching methods and ideas, and dispel doubts. Specific requirements:

1. We should fully understand the important role of teachers in the classroom. Because teachers play a leading role in classroom teaching. His analysis and explanation in class are far more detailed than after-class tutoring, which is unmatched by students' own reading. Classroom teaching is the simplest way for teachers to guide students to master knowledge. Therefore, every student should learn from the teacher with an open mind. Do a good job in every class under the guidance of the teacher.

2. Pay attention, concentrate on listening to the teacher's explanation, follow the teacher's lecture ideas, and never be distracted. If you have a better idea inspired by the teacher, you can write it down in your notebook and think deeply or ask your teachers and classmates after class. In short, "distraction" in class is the enemy of learning.

In class, you can try to make your own judgment and conclusion before the teacher makes it. See if what you think is consistent with what the teacher said. Find out the cause of right and wrong.

4. Try to understand in class. Cognition is a thinking process of grasping the essence, internal relations and laws of things. So, how to understand it in class? In class, what you think should be unified with what the teacher said, and what you think should be unified with what the teacher said. Inspired by the teacher, you should always use your head and think positively. If you don't understand or understand thoroughly in your thinking, you should raise your hand and ask questions. If the teacher has no time to answer your questions in class, you should continue to listen to the teacher's explanation. Ask the teacher after class.

5. Follow the teacher's ideas. The purpose of class is to increase knowledge and develop intelligence. Therefore, if you can't understand knowledge, even if you attend classes no matter how good, it is equivalent. A high-level lecture should not only pay attention to the specific knowledge imparted by the teacher, but also pay attention to the teacher's teaching ideas. The purpose of pursuing teachers' ideas is to clarify the various thinking modes and thinking processes used by teachers in the teaching process. Learn how teachers think carefully and scientifically, so as to improve their thinking ability and intelligence. Some students don't pay attention to the teacher's lecture ideas, but focus on reciting the teacher's deduction and induction formula or conclusion, which is considered to be the main purpose of class. In fact, the knowledge you master in this way is dead knowledge that you know but don't know why. This kind of dead knowledge is soon forgotten and can't be used to solve practical problems, let alone develop intelligence.

6. Grasp the key to the knowledge content and subject characteristics of a class. The key of knowledge content generally refers to basic concepts, basic principles, basic relationships, formulas and definitions. When the teacher explains these key knowledge, you must pay special attention and hold on tight. Similarly, the key study without grasping the characteristics of the subject will also affect your learning effect. In fact, the content system, development ideas, training requirements and teaching methods of each subject have their own characteristics. These characteristics must be mastered in learning. For example, in physics, chemistry and biology classes, we should pay special attention to observation and experiment, and master scientific concepts and laws through thinking on the basis of perceptual knowledge. Mathematics should acquire mathematical knowledge and cultivate mathematical thinking ability through a lot of calculus and proof exercises. When listening to lectures, Chinese and foreign languages mainly grasp the knowledge points of words, phrases, sentences and texts, and improve their reading and writing ability through listening, speaking, reading and writing. In order to better understand and master language and writing.

(3) Grasp the review link.

Review is to systematically reprocess the knowledge learned before, and make appropriate adjustments according to the learning situation to prepare for the next stage of learning. So every class, every text, every unit and every book should be reviewed in time. If the review is timely and appropriate, the knowledge will be less forgotten. As early as 1885, German psychologist Ebbinghaus found through experiments that the material he had just memorized could only keep 44% after one hour. Can remember 33% after one day; Only 28% remained after two days; After six days, 25%. All people will soon forget what they have learned, and then slowly forget it. Some students with good memory often review from different angles and levels, so as to achieve "review every day, summarize every week and summarize every chapter", thus forming an amazing memory. So many students can't remember what they have learned, not because they are stupid, but because they are not good at reviewing, or they are not good at reviewing.

1. Review requirements

(1) Go over what the teacher said on the blackboard in time after class, just like watching a movie. See how much you can remember and how much you forget. Then open your notes and look for blanks.

(2) When reading textbooks, you should think while reading and think deeply about the key points and difficulties. Analyze doubts and deepen understanding.

(3) Read the necessary reference books to enrich what you have learned in class.

(4) Organize and enrich notes, classify knowledge, deepen, simplify and organize knowledge, and strengthen memory according to laws.

(5) Strengthen practice. Generally speaking, practice should be done after review, or practice while reviewing. In the review process, strengthening practice can improve the review effect.

(1) Review in time. Review what you learned that day, and never put it off. Don't owe the account. Otherwise, if the content is unfamiliar and the knowledge structure is scattered, it will take twice as long to relearn. Understand that it is much easier to repair a collapsed house than to rebuild it.

(2) Review concepts, formulas, laws, theorems and laws closely. Think about how they are formed and derived. What can it be applied to? What do they need? Is there any other statement or proof? What knowledge is it related to? Grasp the knowledge firmly by tracing the source.

(3) Review repeatedly. Review once after learning a lesson and once after learning a chapter (or a unit). Summarize systematically in a stage of learning. Focus on reviewing it at the end of the term. Through this step-by-step review, the knowledge connection formed will not fade.

(4) Review should have your own ideas. After reviewing a lesson, a section and a chapter, write a summary of your thoughts and ideas, list charts, or use the method of outline summary to connect the previous knowledge and form a complete knowledge network.

(5) When you encounter problems in review, don't rush to read books or ask people, think before you look (ask). This will help to concentrate, strengthen memory and improve learning efficiency. Every time you review, you should first recall the last time. Doing so not only maintains the continuity of learning, but also has a good effect on memory.

(6) In the review, we should look at some questions properly and do some questions. The selected questions should be selected around the review center. Before solving the problem, we should first recall the ideas we have done in the past and then do the problem on this basis. The purpose of doing the problem is to check your review effect, deepen your understanding of knowledge and cultivate your ability to solve problems. Doing comprehensive questions can deepen the understanding of the complete system of knowledge and cultivate the ability of comprehensive application of knowledge.

(4) Complete the operation independently.

Doing homework independently is an important means to deepen knowledge, consolidate knowledge and check the learning effect, and it is also the main form of combining review with application. But some students didn't really make good use of this link. They hurried to do their homework as soon as class was over. As soon as they finished their homework, everything was fine. Some students don't understand at all in class and don't ask after class. After copying their homework, they handed it over to the teacher. In fact, doing homework well has the following significance:

1. You can check your learning effect. Problems can be found by doing homework so as to remedy them in time.

2. By thinking when doing homework, we can deepen our understanding of knowledge, clarify confusing concepts and skillfully change formulas. In short, it is conducive to transforming the knowledge in books into your own knowledge.

3. Can cultivate thinking ability. Because of all kinds of problems raised in homework, I will inevitably urge myself to think positively and enhance my ability to analyze and solve problems.

4. After finishing your homework, don't throw it away, but organize it regularly to accumulate information for the general review. When reviewing, it is convenient, easy and impressive to look through the recorded homework.

Basic requirements and methods of doing homework:

1. Examining questions is an important step in doing homework. To get a topic, we must first judge which category it belongs to and how difficult it is. Distinguish the conditions and requirements of the topic. What are the known conditions? What other conditions can be mined from the information provided by the topic? What are its requirements? At the same time, let your thoughts follow the path of the topic. By thinking about the purpose and significance of solving problems accurately and thoroughly, we can distinguish what the known conditions are and what the conclusions required by the topic are. In the process of examining questions, we should also pay attention to other formal conditions that are not directly expressed in language, that is, pay attention to the mining of implicit conditions.

2. Find a way to solve the problem. There are generally three methods: one is "cause and effect", which can be expressed as "known → known → known ……", and finally a conclusion is drawn. The second is "holding the cause", that is, the conclusion ← needs to know ← needs to know ← ... ".In this way, we will pursue it layer by layer until all the known conditions are met. This way. It opens the way between the known conditions and the required conclusions. Thirdly, for some complicated topics, the first two comprehensive methods should be used to shorten the distance between conditions and conclusions as much as possible. That is, on the one hand, some known intermediate results are derived from known conditions, on the other hand, some intermediate results that need to be known are analyzed according to the requirements of the topic. Once the known needs and known things are unified, the way to solve the problem can be obtained.

When looking for solutions to problems, we should extensively contact with concepts, formulas, rules and methods related to these conditions and conclusions. Lenovo has solved the same or similar problems in the past. How was it solved at that time? If you can think of old knowledge, that is, the laws, principles and formulas corresponding to this problem, it will come to your mind, which will broaden the thinking of solving problems. The wider the association, the greater the span, and the better the problem-solving effect.

Sometimes, because the topic is complex, you can draw a sketch of the examination process for the convenience of thinking. This is actually the process of processing and transforming the topic by using the knowledge learned. After processing, the thinking is clear, and the shortcut to solve the problem will appear in front of you.

3. Solve the problem correctly. After two steps, I have found a solution to the problem and decided on a solution. However, we should also pay attention to the quality and quantity of solving problems in implementation. To do this, the steps to solve the problem must be calculated step by step. Standardized writing, clear format and accurate expression. To do this, we must have a solid foundation. In addition, in solving problems, important knowledge points should be written, complex questions should be concise, and simple questions should be written in detail.

4. Pay attention to the inspection. Just go back and check again to see if all the solutions required by the topic have been found and if there are any missing solutions. Whether the obtained solution meets the requirements of the topic and whether there is a wrong solution. Examination is an important link to cultivate students' independent thinking ability. There are many ways to check. ① Step-by-step test method. That is, from the beginning of the exam, check step by step. This method can detect errors in calculations and expressions. (2) Emphasis on practice. That is, do it again and see if the result is the same. ③ Substitution method. Substitute the calculation results into the formula or formula to see if it is reasonable. At the same time, we should also pay attention to practicing more questions, solving more questions and thinking more about one question. Compare the problem-solving habits of classification, and constantly improve your ability to analyze and solve problems.

Take class notes carefully.

Taking notes is for learning, understanding and use. The principle of taking notes is to give priority to listening, supplemented by taking notes. Concise, concise and detailed. Difficulties are not spared, and doubts are marked. Not chaotic, not miscellaneous, in good order. We should remember the problems we think of and find them in time. Leave a blank space in your notes so that you can fill in the blanks when reviewing.

The main contents of the notes are:

1. Remember the lecture outline, problem-solving ideas, important and difficult points and important experiences you have learned.

2. The ideas, arguments and reasoning process put forward by the teacher when solving problems. A clever and novel way to solve the problem.

3. Problems not solved in class. The connection or combination of new knowledge and old knowledge. An error-prone and confusing concept.

4. Remember the main points. Some books don't need to be memorized. You can leave blank in your notes, make up your notes after class or review them against your textbooks.

5. Preview the problems and experiences found, and master the bad old knowledge by yourself.

6. Extract materials from reference books that are helpful to the content of textbooks.

The advantages of taking notes are:

1. It's not easy to be absent-minded, because you have to listen, remember and think in class. Can maintain concentration and persistence, and strengthen the acceptance and understanding of knowledge.

2. Take notes with hands, eyes, ears and brain, so that sensory organs and thinking can be fully trained and learning ability can be improved.

Books! Books! Books! Textbooks are the return point of all topics!