所渭“负担不变原则”是从系统论中得出的一种观点,它指示人们当发生某种危机时,既不可消极抵御,又不可任其发展,而必须寻找解决危机的途径,从而变危机为有利局面。在教学过程中我们也经常遇到危机,尤其到高三下学期的三、四月份常出现一种“高原效应”,这种危机集中表现为学生的学习效率极低,遗忘率高,成绩停滞不前或者反而不及从前,对老师课堂上 The “consideration of the principle of burdenlessness” is a viewpoint derived from the theory of systems. It indicates that when a certain crisis occurs, people must not passively resist or allow them to develop, but must find ways to solve the crisis. Changing the crisis into a favorable situation. In the teaching process, we often encounter crises, especially in the third and fourth consecutive months of the next semester of the third year of high school. There is often a “plateau effect”. This kind of crisis concentrates on the students’ low learning efficiency, high rate of forgetting, and stagnant performance. Before or in contrast to the past, on the teacher’s class