美国认知心理学家奥苏贝尔指出：“教与学是一件事的两个方面，两者在逻辑上是可以分开来研究的，实质上是联系在一起的；教的目的是促进学生学、教学生学。”由此可看出，课堂教学应该以学生学、练为主，即以教师为主导，学生为主体，教师指导干教学全过程。笔者仅就高中生物 Ausubel, a cognitive psychologist in the United States, pointed out: “Teaching and learning are two aspects of one thing that can be studied logically separately and are essentially linked together. The purpose of teaching is to promote students Learning, teaching students. ”It can be seen, classroom teaching should be student learning, practice-oriented, that is, teachers as the leading student as the main body, the teacher instructs the whole process of teaching. The author only high school biology