There are many students and parents who think physics is difficult, and even think physics is the most difficult subject in high school.
is wrong. If your score is below 50 points, it means your method is wrong.
Hello everyone, I am Master Yin. senior physics teachers in the top 10 provincial key high schools ranked in the country, and have also won the top ten teachers in the country.
Today I will tell you whether physics is difficult or not, why those top students are so simple to learn physics.
What to take in the college entrance examination?
80% of parents and children even have some teachers who don’t know what to take in the college entrance examination. It's totally blind learning. In fact, there are two characteristics of the college entrance examination:
1. Different test papers, different exercises, and different difficulties. test papers are different in different regions, and the questions are also different. There are differences between national and local volumes. Due to the number of candidates, the difficulty of the college entrance examination in some provinces will vary. For example, Shandong and Henan are more difficult, while Guangdong and Beijing are relatively easy mode.
2. Same test syllabus, same textbooks, and same test points. The textbooks in most regions of the country are consistent. There are only a few places where
textbooks are different. Even in those places where the textbooks are different, the exam syllabus and test points are the same in the college entrance examination.
This is the second level of the college entrance examination: study questions cannot be completed, and a real academic master is learning the test points, not the study questions.
What exactly are the top students learning?
1. Logical ideas in the study test point
2. Method judgment in the study test point
3. System selection in the study test point
Let me explain in detail how the academic master thinks.
For example, the small wooden block in the picture below is stationary on the inclined surface, and most students can easily judge the direction of the static friction force. The question was correct, but many children actually didn't know the reason. What if the conditions become small pieces of wood to accelerate the decline? Many students are in chaos. And what is the logic of a top student? : reverses according to state logic.
state - the static state of small wooden blocks; logic - the combined force is 0; 3 reverse push - If the combined force is 0, the static friction must face up along the slope.
is still the above question as an example. There are actually many ways to test this type of exercise. You may even find friction, support, and even one year in the college entrance examination, the friction that is oblique to the ground was examined. In the view of academic masters, although the test methods are diverse, the cores are the same. is the relationship between solving the force under the balance of the three forces.
I have talked about the test of the balance of the three forces actually geometric ability. There are 6 methods, namely: trigonometric function , Pythagorean theorem , sine theorem , cosine theorem , similarity and diagram method.
The specific method judgment basis and steps are all in my class, so I will not expand it here.
see no, there are these correct methods. The exam has completely become a high-dimensional and low-dimensional one. It’s no longer about using the questions to calculate the answer, but using the answer to find the questions. Of course physics will become very simple.
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