美国教育学家奥苏贝尔说过:“如果我不得不把教育心理学还原于一条原理的话,我将会说,影响学习最重要的因素是学生已经知道了什么。我们应当根据学生原来的状况去进行教学。”学生是课堂的主人,了解学生的学习起点,才能更好地组织学生进行学习活动,从而提高教学的有效性。 Ausubel, an American educator, said: “If I had to restore educational psychology to a principle, I would say that the most important factor affecting learning is what the students already know.We should according to the original Status to teach. ”Students are the masters of the classroom, to understand the starting point for students in order to better organize students to carry out learning activities, thereby enhancing the effectiveness of teaching.