研究表明:数学学习的成功要靠勤奋,更要靠科学的学习方法、科学地使用时间、科学地用脑。那么,如何做到科学、有效呢?笔者认为这需要按照一定的心理学规律主动地去学习,才会有满意的结果。高效率的数学课学习需要预习、听课、复习三步曲,因此,预习是提高学习效率的重要一环。一、课前预习的重要性 The research shows that the success of mathematics learning depends on diligence, but also depends on scientific learning methods, uses time scientifically, and uses the brain scientifically. So, how to be scientific and effective? I believe that this requires a certain degree of psychological laws to take the initiative to learn, will have satisfactory results. Efficient math class learning needs preview, lectures, review trilogy, therefore, preview is an important part of improving learning efficiency. First, the importance of pre-class preview