The top scholar talks about physics learning.
A, physics learning is modular, * * * is divided into four modules:
1. The understanding of the concept cannot be simply recited. Facing a new physical quantity, it is important to understand its function in solving practical problems.
2. Application of the concept: After understanding the concept, there is no big problem in application. Solving a problem is to grasp every sentence of every problem and give you conditions. As long as the conditions correspond to the physical quantities and then substitute them into the corresponding formulas, the answer can be worked out.
3. Derivatives
4. Synthesis: In all chapters of physics, except for the relative independence of optics, everything else is closely related, so we must pay attention to the connection.
Second, how to do exercises:
When doing exercises, especially science exercises, we must grasp the relationship between quantity and quality. Mainly concerned with quality issues. "I" high school never bought exercises, mainly after finishing the questions given by the book and the teacher, summed up the problem-solving ideas of each question. The process of solving the problem is divided into:
1. Analyze physical processes: abstract processes into physical quantities.
2. Use mathematics to solve problems
Third, study habits:
You should listen carefully in class. As for learning methods, you should adapt your learning methods to yourself, not to others.
2) Think more and ask more questions when doing the questions. "I" have been slow in doing the problem, but every time I finish it, I will look at how I got it and what I can learn from it in the future, so as to achieve the effect of giving inferences, instead of forgetting it after I finish it. In this way, "I" will have an exam soon, unlike others, who are busy deducing as soon as they get to the exam.
3) Ask questions when you are wrong, and discuss them with your teachers and classmates. Don't be shy.
4) Review repeatedly.
5) Reference books, students whose grades are not very good, should look for books that are analyzed and summarized when buying, rather than books that simply give answers.
How to study high school chemistry
Chemistry is a rigorous natural science, which is related to. Many concepts and theories of chemistry in senior high school have a preliminary framework or outline by junior high school. Even so, every year, senior one students still feel that they are too tall to adapt to the study of chemistry. Based on my years of teaching experience and the characteristics of chemistry, the author summarizes the learning methods of "intensive reading, induction, skillful memorization and diligent practice". For your reference.
First, intensive reading
Textbooks are the foundation of knowledge. We must read the new concepts carefully, word for word, and grasp their essence and significance. Only by reading textbooks can we deeply understand them and use them freely. For example, in the definition and classification of "hydrocarbon", it is said that "hydrocarbon" is a substance composed of only two elements: carbon and hydrogen. Include alkanes, alkenes, alkynes, aromatic hydrocarbons and the like. Oil and coal products are mostly mixtures of various hydrocarbons. It can be seen that clean fuel compressed natural gas (CNG) and liquefied petroleum gas (LPG) are both hydrocarbons, and their main components are hydrocarbons.
When reading, you should think while reading, contact the teachers' experiments in class, contact the life knowledge around you, ask more questions, mark the difficulties you don't understand, and ask the teachers and classmates in time. After class, you can read the textbook carefully, with clear concepts and thorough theoretical understanding, and you can easily finish your homework in a short time. This is the truth that "sharpening the knife does not mistake the woodcutter".
Second, induction.
Some students are afraid of chemistry, one of the reasons is that chemistry is "complicated, difficult and chaotic". At this time, induction can be used to solve these problems
1, we can start with the knowledge points and summarize the chemical knowledge we have learned with the knowledge structure as the main line. If we study the structure of halogen knowledge points, we can know its teaching order: structure → nature → use → preparation → existence → preservation and so on. The regularity of the structure can be obtained: the number of outermost electrons, the number of layers of electrons outside the nucleus, the atomic radius and so on. ⑵ Regularity of properties: From the outermost electron number of 7, it can be inferred that the oxidation of simple substance is stronger, and the reduction of ions formed after gaining electrons is weaker, while most other compounds containing halogen (positive valence) have stronger oxidation, and so on.
2. According to the characteristics of substances, we can sum up a class of substances we have learned, such as ionic compounds and valence compounds, and we can conclude that the atomic crystals we have learned are diamond, monocrystalline silicon and silicon carbide.
3. According to typical exercises, we can summarize common problem-solving methods, such as material conservation calculation and mixture calculation.
Third, remember it skillfully.
1, understanding and memory
What you understand can be remembered for a long time and is easy to use. For example, we should understand that "the quantity of matter" is one of the seven basic physical quantities, and its unit is mole, which is defined according to the counting standard of Avogadro constant. That is, how many times elementary particles are contained in a system, the amount of matter in the system is how many moles.
2. Inductive memory
Associating, combining or dividing knowledge according to certain rules can enhance the interest and effect of boring memory. For example, common liquefied gases include HF, NH3, Cl2, CO2, etc. There are Na2SiO3 solution, NaAlO2 solution, C6H5ONa solution, NaCO3 saturated solution, etc.
3. Comparative memory
For knowledge that is easily confused and interferes with each other, we can distinguish similarities and differences, prevent interference and grasp the essence by comparison. Such as isotopes, allotropes, allotropes and isomers, can be compared to deepen understanding and firm memory.
4. Memories of songs
For some irregular chemical knowledge that needs to be memorized, some popular and vivid songs can be compiled to improve the memory interest and effect. For example, the operation of the filtration experiment is summarized as "one stick, two lows and three refinements", and six words contain the whole operation process and precautions. There are also common valence, solubility of acid, alkali and salt, which can be compiled into songs.
Fourth, practice diligently.
Practice is an important way to understand, digest and consolidate classroom knowledge. Practice should be purposeful, not just to solve problems, let alone engage in sea tactics. After-class exercises serve the content in class, and the main points of knowledge in class should be recalled before practice. When analyzing an exercise, we should consider which knowledge points are used in class, which are the supplement, extension and development of classroom knowledge, and which are comprehensively used with old knowledge. After practice, think about what knowledge has not been applied to practice, but it still needs to be mastered. Through practice, we can reproduce what we have learned in our minds and realize that we can really learn to understand.
[Mathematics] How to Learn High School Mathematics [Mathematics] Sunday, March 25th, 2007 1 1: 15 [Mathematics] How to Learn High School Mathematics.
Updated on March 22nd, 2007 Source: Number of hits: 295
Fu Supervisor of Shanghai University of Finance and Economics: Kwang Hyok Ri of Qibao Middle School.
Learning high school mathematics is not an overnight process, but a gradual process. Senior high school mathematics has more knowledge points than junior high school mathematics, and it also puts forward higher requirements for thinking and ability. If you want to learn high school mathematics well, you can't be eager for quick success and instant benefit. You should be serious and realistic, step by step, slowly and steadily. That is to say, if you lay a good foundation in Grade One and Grade Two and sprint in Grade Three, you will get better grades.
First of all, it can't be ignored that students sit in the classroom and listen carefully.
Many students often think that the concepts spoken by teachers are derived from textbooks, and sometimes examples are also selected from textbooks. Once you have listened to the class for a period of time and think that you have basically mastered it, you will stop listening attentively. In fact, if a teacher prepares a lesson attentively, it is bound to emphasize and supplement the important knowledge points in the textbook, which may be the most difficult place for students to master. Similarly, many students think that books and textbooks are too simple to be ignored, that exercise books are easy to complete, that they are sloppy, that they blindly look for various tutorials to attack topics, or that they are immersed in the sea of questions. These are the disadvantages that are easy to appear in high school mathematics learning. Ignoring the most basic courses and basic training is like a building without a solid foundation. If you want to build higher, you won't be able to do so. At this time, the so-called self-improvement is just a castle in the air. Many difficult exercise questions are usually adapted or synthesized from the questions learned and practiced in the initial stage of learning new knowledge. Without a solid foundation, confusion about individual knowledge points will become a stumbling block to overcome problems. How can I improve myself? On the contrary, if you master the basic questions skillfully and learn to draw inferences in the process of practice, then learning will become easy and simple.
Secondly, we should learn to learn from each other.
Among them, self-study includes four links: pre-class preparation, class notes, after-class review and pre-test review. Reading before class is generally to find out what you don't understand and mark it well, so that teachers can concentrate on listening when teaching new lessons, which will make them more impressed and improve their listening effect. In class, you should not only listen, but also think for the first time and learn to take notes skillfully. Write down the questions that have puzzled you for a while and the classic exercises explained by the teacher, and watch them again after class. If you still have questions, you should find a teacher to solve them immediately, and don't delay. After-class review is a process of trying to recall the contents of the class, the teacher's ideas and the key points of the class, completing the homework after making sure that you have basically mastered what you have learned, and finding your own weak points in the process of completion, and then choosing an appropriate number of exercises to practice, that is to say, you should immediately turn to the books to inquire or answer the missing knowledge in order to firmly grasp it. When reviewing before the exam, textbooks, notebooks and wrong questions are the main ones, which is not suitable for doing a lot of exercises. Proper exercise can keep the brain excited and help the exam flexible. It is important to comb the knowledge points again, deepen the understanding of basic concepts, understand the mistakes you often make and correct them, so as to avoid making unnecessary low-level mistakes in the exam. Practicing every link carefully and grasping it firmly will naturally make you more confident in the exam.
Proper communication and discussion with classmates and a good learning atmosphere can not only improve the enthusiasm of learning, but also promote and improve each other. In the discussion, sometimes you may find some problems that you usually ignore but do exist. Sometimes, different classmates will think of different solutions to the same problem, so that you not only answer a question, but also solve a problem. However, it should be noted that advocating exchange learning is not a vicious circle that requires students, nor is it a bad habit of checking the answer after completing a question. Homework must be done independently, and gradually cultivate confidence in the correct answer rate, so that students can naturally have answers in the exam.
Finally, I remind everyone that in the whole process of mathematics learning, we should consciously build the structural network of knowledge and pay attention to summary. Especially after entering the third year of high school, we should pay more attention to the integration of various knowledge points, such as functional relations, inequalities, equations, etc., and attach importance to the application of thinking methods, such as the combination of numbers and shapes, equivalent transformation, etc. At the same time, the training of computing ability can not be ignored. Usually, we should stick to the end and pursue perfection, not know a rough idea. Don't let go of the wrong questions easily. It is best to collect wrong questions and classic questions, and occasionally record your own experiences, look through them regularly and summarize methods, because mastering knowledge will help improve your comprehensive ability.
In short, I have a certain interest and a dedicated heart.
[Mathematics] How to learn high school mathematics well
Fu Instructor: Li Guangxue from Qibao Middle School.
Learning high school mathematics is not an overnight process, but a gradual process. Senior high school mathematics has more knowledge points than junior high school mathematics, and it also puts forward higher requirements for thinking and ability. If you want to learn high school mathematics well, you can't be eager for quick success and instant benefit. You should be serious and realistic, step by step, slowly and steadily. That is to say, if you lay a good foundation in Grade One and Grade Two and sprint in Grade Three, you will get better grades.
First of all, it can't be ignored that students sit in the classroom and listen carefully.
Many students often think that the concepts spoken by teachers are derived from textbooks, and sometimes examples are also selected from textbooks. Once you have listened to the class for a period of time and think that you have basically mastered it, you will stop listening attentively. In fact, if a teacher prepares a lesson attentively, it is bound to emphasize and supplement the important knowledge points in the textbook, which may be the most difficult place for students to master. Similarly, many students think that books and textbooks are too simple to be ignored, that exercise books are easy to complete, that they are sloppy, and that they blindly look for various guidance books to attack or immerse themselves in the sea of questions. These are the disadvantages that are easy to appear in high school mathematics learning. Ignoring the most basic courses and basic training is like a building without a solid foundation. If you want to build higher, you won't be able to do so. At this time, the so-called self-improvement is just a castle in the air. Many difficult exercise questions are usually adapted or synthesized from the questions learned and practiced in the initial stage of learning new knowledge. Without a solid foundation, confusion about individual knowledge points will become a stumbling block to overcome problems. How can I improve myself? On the contrary, if you master the basic questions skillfully and learn to draw inferences in the process of practice, then learning will become easy and simple.
Secondly, we should learn to learn from each other.
Among them, self-study includes four links: pre-class preparation, class notes, after-class review and pre-test review. Reading before class is generally to find out what you don't understand and mark it well, so that teachers can concentrate on listening when teaching new lessons, which will make them more impressed and improve their listening effect. In class, you should not only listen, but also think for the first time and learn to take notes skillfully. Write down the questions that have puzzled you for a while and the classic exercises explained by the teacher, and watch them again after class. If you still have questions, you should find a teacher to solve them immediately, and don't delay. After-class review is a process of trying to recall the contents of the class, the teacher's ideas and the key points of the class, completing the homework after making sure that you have basically mastered what you have learned, and finding your own weak points in the process of completion, and then choosing an appropriate number of exercises to practice, that is to say, you should immediately turn to the books to inquire or answer the missing knowledge in order to firmly grasp it. When reviewing before the exam, textbooks, notebooks and wrong questions are the main ones, which is not suitable for doing a lot of exercises. Proper exercise can keep the brain excited and help the exam flexible. It is important to comb the knowledge points again, deepen the understanding of basic concepts, understand the mistakes you often make and correct them, so as to avoid making unnecessary low-level mistakes in the exam. Practicing every link carefully and grasping it firmly will naturally make you more confident in the exam.
Proper communication and discussion with classmates and a good learning atmosphere can not only improve the enthusiasm of learning, but also promote and improve each other. In the discussion, sometimes you may find some problems that you usually ignore but do exist. Sometimes, different classmates will think of different solutions to the same problem, so that you not only answer a question, but also solve a problem. However, it should be noted that advocating exchange learning is not a vicious circle that requires students, nor is it a bad habit of checking the answer after completing a question. Homework must be done independently, and gradually cultivate confidence in the correct answer rate, so that students can naturally have answers in the exam.
Finally, I remind everyone that in the whole process of mathematics learning, we should consciously build the structural network of knowledge and pay attention to summary. Especially after entering the third year of high school, we should pay more attention to the integration of various knowledge points, such as functional relations, inequalities, equations, etc., and attach importance to the application of thinking methods, such as the combination of numbers and shapes, equivalent transformation, etc. At the same time, the training of computing ability can not be ignored. Usually, we should stick to the end and pursue perfection, not know a rough idea. Don't let go of the wrong questions easily. It is best to collect wrong questions and classic questions, and occasionally record your own experiences, look through them regularly and summarize methods, because mastering knowledge will help improve your comprehensive ability.