传统的化学课堂教学常常有这样一种现象:有的化学教师课讲得头头是道,例题也分析得十分透彻,但教学效果却不十分理想。究其原因,是由于在化学课堂教学中,教师的主导作用和学生的主体地位没有很好的结合起来,只注重教师的讲,而忽视调动学生学习的积极性。建构主义教育理论认为,知识是不能 The traditional chemistry classroom teaching often has such a phenomenon: Some chemistry teacher class speaks well, examples are also analyzed very thoroughly, but the teaching effect is not very satisfactory. The reason is that in the chemistry classroom teaching, the dominant role of teachers and students are not well integrated with the dominant position, focusing only on teachers say, while neglect to mobilize the enthusiasm of students to learn. Constructivism theory of education that knowledge can not