In senior high school physics, to deepen the understanding of important physical knowledge, some will move from qualitative discussion to quantitative calculation, such as the relationship between force and motion, the concept of kinetic energy, electromagnetic induction, nuclear energy and so on. In high school physics, we should expand the scope of physics knowledge and learn many new contents that we haven't learned in junior high school, such as the synthesis and decomposition of force, Newton? Law of universal gravitation, momentum theorem, Law of conservation of momentum, properties of light, etc.
Although the middle school mathematics syllabus has been revised many times, they all have the same guiding ideology, that is, to do the three basics well. It is emphasized that a correct understanding of mathematical concepts is the premise of mastering the basic knowledge of mathematics. At present, the outstanding problem in China's mathematics teaching only ignores the mastery of mathematical foundation, that is, the correct understanding of mathematical concepts. On the one hand, textbooks underestimate students' understanding ability, and in order to "reduce the burden", they dilute or even avoid some difficult basic concepts.
Process analysis method:
1, solving process level: Generally speaking, a complex physical process is composed of several simple "subprocesses". Therefore, the most basic method to analyze physical processes is to divide complex problems into several interrelated "subprocesses" to study.
2. Find out the intermediate state: sometimes it is not easy to divide the stages, but it is also necessary to find out the intermediate state (or process) that determines the physical phenomenon from quantitative change to qualitative change, and correctly analyze the key links of the physical process.
3. Straighten out the restrictive relationship: the occurrence, development and change process of physical phenomena described in some comprehensive questions is a "comprehensive effect" in which many factors are interdependent and mutually restrictive. To analyze correctly, we must observe and analyze from all angles, grasp the law from the internal relations, straighten out the relations and seek solutions.