In fact, the content of high school physics is not much, and the core is force analysis and process analysis. Even the problem of electromagnetism is inseparable from force. Therefore, in order to solve physical problems, the key is to practice analysis, first practice force analysis, and what laws can be used in process analysis, which are known and which are unknown, and solve them in equations. The main breakthrough is stress analysis. You can try to read two questions every day and then analyze the stress first. If you are proficient in other problems, you will solve them easily. There are also experimental problems of circuits. Ohm's law of closed circuits can be used in high school circuits. If you master it skillfully, you can analyze the circuits in the problems. In high school, some students in my class were not very good at physics, so I used these methods to explain, and the effect was not bad. After many people have mastered the essentials of analysis, there are few big questions that can't be started, and they basically get high marks.

The content of high school chemistry is complicated, which can be roughly divided into chemical concepts, chemical theories, elements and their compounds, organic chemistry and chemical experiments. The concept of chemistry is the quantity and concentration of substances, the classification of crystals, etc. This part is not much or difficult, but it must be remembered that it is the basis of chemistry. Chemical theory includes redox, ion reaction, electrolytic cell, galvanic cell, reaction rate, chemical equilibrium and so on. These contents are difficult and some concepts are easily confused. When studying, we should give priority to understanding, clarify various concepts inside and pay attention to returning to textbooks. Elements and their compounds are inorganic chemistry. The subjects studied in high school represent the properties of elements and compounds. The important elements in high school are hydrogen, sodium, aluminum, carbon, silicon, nitrogen, phosphorus, oxygen and chlorine. Find out the properties of these elements and their compounds. Many reference books have the mutual transformation between the compounds of various elements. You can read it and write it yourself, remember. Look at other elements involved in the textbook. If you don't have them, you don't need to see them. If you get questions in the exam, you will be introduced. If not, it can generally be solved by the periodic law of elements. There is also organic chemistry, which is nothing more than hydrocarbons and hydrocarbon derivatives. The key is functional groups. Make a list of the properties of all functional groups and read it once a day. It will be cooked in two weeks. The experiment is divided into preparation, inspection (substance identification), separation and purification and quantitative test. Be familiar with the experimental equipment first, and then combine all kinds of organic and inorganic knowledge with others.

Biology is even more miscellaneous, and there is no particularly incisive summary of learning methods, so we can only analyze specific problems.

What I said above is more general. You can try it, or you can add me as a friend in the space and find some specific problems to discuss the skills and learning methods of doing problems in comprehensive management.

Finally, I wish you success in your studies! ! !