Compared with junior high school physics, one of the difficulties is that the teaching content gradually becomes more in-depth. Naturally, the problem-solving speed of high school physics is slower than that of junior high school. The following is the problem-solving method of high school physics that I bring to you. Methods to improve speed, I hope you like it!
Methods to improve problem solving speed in high school physics
1. Do more typical questions
In physics, you need to analyze more typical questions , to summarize more problem-solving methods. Many students are slow to do physics questions and always feel that there is not enough time during the exam, resulting in low scores. When top students with outstanding physics scores talk about their learning experiences, they focus on summarizing and analyzing typical questions. Analyzing more typical questions, feeding back knowledge points to textbooks, and summarizing typical problem-solving ideas will be beneficial to improving the accuracy and speed of solving questions.
It is necessary to do more various types of physics questions. Top students practice by doing physics questions. When doing the questions, they should pay attention to looking, thinking, acting and reviewing. First understand the meaning of the question, then think about the relationship between the stem and limbs of the question, then take action, and finally summarize. Once you get used to these steps, you will be able to answer questions quickly. When you have mastered certain thinking and skills and summarized relatively fixed thinking for solving physics problems, you can start working on them as soon as you get the questions, and the speed of solving physics problems will increase.
2 Master the basic knowledge
Have a solid foundation in physics. Only by carefully laying down these basic knowledge. Typical physics examples are to help you understand and consolidate basic knowledge. For example, the topic on the application of the law of conservation of momentum mentioned in the textbook mentions the premise of conservation of momentum, but many students do not pay attention to it. How can they not make mistakes when applying this law when momentum is not conserved? Maybe many students are left behind. I have learned some physics knowledge, or some contents are not solid and need to be further consolidated. One of the ways for academic masters to improve their speed in solving physics problems is to master solid basic knowledge so that they can use it flexibly when solving physics problems and improve their speed in solving physics problems.
3. Exam mentality
Before the physics exam, I kept hinting that the exam was difficult and that I would not do well in the exam. This invisibly suppressed the excitement of the brain cells and slowed down the thinking speed. How could I do it? What about improving the speed of solving physics problems? Napoleon has a famous saying: If you think you have been defeated, then you are defeated; if you want to win, but you feel that you cannot do it, then you will definitely not win. Human success originates from human consciousness, that is, one's own view of himself. If you don't have confidence in yourself, of course you won't be able to go all out and concentrate on fighting. The second way for academic masters to improve their physics problem-solving speed is to face the exam calmly, answer the questions with the most normal attitude, and not let nervousness affect the physics problem-solving speed.
4. Solve difficult problems first and then easy ones
Academic experts suggest that solving physics problems should be easy first and then difficult ones. The process of people understanding things is from simple to complex, step by step from the surface to the surface. Go deeper into the ground. A person's ability also gradually increases through exercise. If you solve more simple problems, the concepts will become clearer, and you will become familiar with formulas, theorems and problem-solving steps, and you will form leaping thinking when solving problems, and the speed of solving physics problems will be greatly improved. Once you develop a habit, you can still maintain a high problem-solving speed when encountering common problems. Some students do not pay much attention to these basic and simple exercises and think that there is no need to spend time solving these simple exercises. As a result, they have unclear concepts and are unfamiliar with formulas, theorems and problem-solving steps. When they encounter slightly more difficult questions, There is nothing I can do, let alone improve the speed of solving physics problems.
How to do multiple-choice questions in science and technology
Method 1: Direct judgment method
Make direct judgments based on the learned concepts, rules, etc., and get the correct answer answer. This method is generally suitable for common sense questions that require little reasoning. These questions mainly test the candidates' memory and understanding of the memorization content.
Method 2: Special assignment method
The test question options have different calculation results, and candidates need to judge the correctness of the results.
For some test questions, if candidates use the full calculation method, they will find that the calculation process is cumbersome, and some test questions are even beyond the range of computing power. In this case, special value substitution methods can be used to make judgments.
Method 3: Special case refutation method
The special case refutation method is to directly apply the relevant concepts in the textbook when solving multiple choice questions when encountering some specious and confusing options. It is often difficult to distinguish right from wrong, and it is a method to quickly obtain the correct answer by using some special cases that have been mastered or listing negative special cases to refute, and eliminate interference items one by one.
Method 4: Option grouping method
There is a type of multiple-choice questions that can be answered through reasonable imagination and flexible grouping. In the stem of this type of multiple-choice questions, words emphasizing the order such as "respectively" and "sequentially" appear. First find the narrative items that you are most confident about, fix their positions, then compare them with the alternatives, and finally get the answer. This solution can not only avoid multiple selections and missed selections, but also improve the speed of answering questions.
Method 5: Use the inference method skillfully
In daily study, I have accumulated a large number of inferences. These inferences are generally not directly applicable in calculation problems, but they can be used to answer multiple-choice questions. The advantages are obvious when it comes to solving problems, which can greatly improve the speed and accuracy of problem solving.
Method 6: Screening method
The screening method is based on the concepts, principles, and rules that have been mastered, and on the basis of a correct understanding of the meaning of the question, by looking for unreasonable factors (incorrect options) and eliminate them one by one to get the correct answer.
Method 7: Comparative analysis method
If it involves an image, you can carefully observe the image from top to bottom and from outside to inside. If several images are involved, you can compare the similarities under different conditions and the differences under the same conditions. Comparative analysis is a thinking process and method for determining the similarities and differences between things.
Method 8: Equivalent thinking method
Equivalent thinking method is to conduct effective research on complex research objects, background conditions and processes while keeping the effect or relationship unchanged. The purpose of decomposition, reorganization, transformation or replacement is to convert them into simpler idealized models that we are familiar with, thereby achieving the purpose of simplifying the problem.
Method 9: Information feature method
The information feature method is based on various information features (such as structural features, location features, property features, composition features, phenomenon features, numerical values) provided by the test questions Characteristics, etc.), a method of conducting long-span, thick-line analysis, reasoning or association, which can remove the appearance, grasp the essence, integrate and quickly solve the problem.
Method 10: Computational reasoning method
The calculation method is to use formulas to deduce or calculate the results based on the data given in the proposition and compare them with the alternatives to make the correct choice. This method is mostly used for questions that involve a larger amount and are more difficult.
Ways to solve problems in science and technology to improve scores
1. Multiple-choice question skills training
Multiple-choice questions are a special type of question, but they account for the most in the college entrance examination. The ratio of the total score is very large. Of the 750 points in the college entrance examination, about 330 points are multiple-choice questions, and like mathematics and liberal arts comprehensive questions, the score of each question is also larger. Two multiple-choice questions are equivalent to one big question. There are steps to answer the questions, but there are no multiple-choice questions. No matter what level students are, multiple-choice questions are easy to score and easy to lose points. Everyone may be right, but everyone has a certain probability of being wrong.
In the final stage of the college entrance examination, training multiple-choice question skills is of great significance. Correcting one more question in each subject is worth 20 points. Each question saves dozens of seconds, leaving more time for answering questions, filling in questions, etc. in the college entrance examination.
As a multiple-choice question in the college entrance examination, the propositions have very strict standards, that is, they must be testing and selective, and the difficulty setting must ensure that students can answer them in a very short time. Therefore, in the process of answering multiple-choice questions, we must dare to break the rules and avoid making a mountain out of a molehill.
You must make more use of the question information and option information to get ideas for solving the problem. Usually everyone likes rigorous derivation. If the calculation amount is small and you are very confident, then it is recommended that students do this. If you are not sure about the question and cannot calculate it in a short time, you must change your perspective and answer the multiple-choice questions, and you must do whatever it takes to improve the accuracy and answering speed.
Students are often afraid of spending too much time on multiple-choice questions during exams, and are not sure about the answers they choose. If the answer is easy, do you suspect it will not be that simple? So you verify it repeatedly. If something is difficult, you also think that you just don’t know it, and others will, which will affect the entire subject during the exam. Therefore, when training, you should be careful and bold, not stick to one pattern, and start from multiple angles. Don’t limit yourself to knowledge points. Solving questions under the premise is the fundamental way to train multiple-choice questions, improve the accuracy of answering questions, and increase the speed of answering questions.
2. Solve problems through thinking
Solving problems is actually not complicated. Basically, the starting point and end point of thinking in solving mathematics problems tend to be the same. Although the steps are different, the thinking methods have many similarities. Mathematics problem solving does not require too many ideas. Commonly used ones are forward thinking, reverse thinking, and seeking common ground while reserving differences. We must be good at grasping the key points given by the question information, which is the key to solving the problem. Usually the specific numbers, relational expressions, graphic images, etc. in the question are the starting point for solving the question. Never apply question types that you have done in the past. In the college entrance examination examination room, the possibility that you can apply the question types that you have done in the past is very, very low.
Like solving questions in physics, you don’t need to think about several of them. You just need to convert the text of the question into a formula. Regardless of whether it is used or not, list them one by one and you can solve them simultaneously.
Like material analysis in biology and comprehensive literature, the overall thinking is to judge, explain and then answer. Whether it is liberal arts comprehensive image analysis or material analysis, the essence of problem-solving thinking is the analysis of text and images, the selection of knowledge points (selection of textbook formulas or definitions), the organization of materials (simultaneous solution of formulas), and finally the result draw conclusions.
In the last 50 days or so of the college entrance examination, multiple-choice question training is very important, because it is not difficult to answer the questions, and the particularly difficult questions are ones that most students cannot master, and most students will not be able to prepare for the college entrance examination. Competition factors. To answer ordinary questions, you only need to summarize and think according to the ideas mentioned above. However, multiple-choice questions are opportunities and challenges in the college entrance examination competition. Because of the flexibility of the questions and the pioneering nature of the propositions, there are various possibilities to get the questions right. The multiple-choice questions do not rely heavily on the candidates' knowledge level, but largely rely on the candidates' perspective of thinking at the time, making the multiple-choice questions a key question type in the college entrance examination competition and also the key question type for everyone to review in the remaining time period. In order to effectively improve college entrance examination scores, ideas, methods, techniques, and question types are all indispensable.
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