After entering high school, due to the sharp increase and arduousness of the knowledge learned; The sharp changes in physiology and psychology, coupled with the unfamiliar environment, can easily make students feel uncomfortable, resulting in problems such as decreased grades and psychological fluctuations. Therefore, the first compulsory course of mathematics in senior one is set and function, which is relatively simple knowledge in senior three, and also to increase students' self-confidence.
Generally speaking, students' overall academic performance tends to a normal distribution curve, that is, there are fewer students with high and low scores, and the proportion in the middle level is the highest. However, in the connection stage between junior high school and senior high school, the scores of previous exams in senior high school will show a 2-8 regular distribution similar to the social structure, with 20% getting good grades and 80% getting poor grades, and some students will fail for the first time in their lives.
The main reasons for this situation are: the rapid change of knowledge and ability requirements in senior high school and the slow adjustment of students' psychology and learning methods.
Because the difficulty of knowledge and the requirement of ability are gradually increasing slopes, students will fall back if they don't advance. In the process of climbing, if the initial connection is not in place, there will be a gap between the knowledge mastered by students and the knowledge required by teachers. Therefore, students will encounter obstacles in the process of climbing, and they will encounter great difficulties at first. It is difficult to keep up with the teacher's thoughts and rhythm in the subsequent climbing process, so their confidence will be hit again and again, and they are likely to lose interest in learning.