1 八十年代的后几年,我们在视导中学数学教学的过程中发现,中学生的学习情况,虽然已经有了很大变化,但多数学校、多数班级学生的数学基础很不整齐,差生面较大。我们认为,造成这种现象的原因之一,是在传统的教学思想指 1 In the later years of the 1980s, we found that in the course of visual education mathematics teaching, although the learning situation of middle school students has changed a lot, the mathematics foundations of most schools and most classes have been very irregular and the students are poorly prepared. Larger. We believe that one of the reasons for this phenomenon is the traditional teaching thinking