初中化学教学实践,常常引发我去思考一个问题;初中化学课是化学的入门阶段,对同学们来说都是第一次系统地学习化学。按理一个班的同学在同一教室,听同一老师授课,做同样的实验,受同样的训练,在这种情况下其学习成绩之间的差异似乎应该是比较小的(极少数不学习者除外)。但事实上远非如此,在 The teaching practice of junior high school chemistry often leads me to think about a problem. Chemistry class in junior high school is the beginning stage of chemistry. It is the first time for students to learn chemistry systematically. According to a class of students in the same classroom, to listen to the same teacher to teach, do the same experiment, subject to the same training, in this case the difference between the academic performance seems to be relatively small (except for a very small number of non-learners) . But in fact far from this,