“启发式”教学对我们来说它既古老而又新鲜,在现代数学教学中,它被看成是一门新兴的学科,是当前教育研究的主要课题之一。在实际中也是传授知识的主要手段之一,它也是实施素质教育的最佳方法与途径。兴趣,是学习者积极性与能动性最活跃的部分,是启发学生学习动机、集中注意力的主要因素,激发兴趣的关键在于调动学生的积极性, It is ancient and fresh to us. It is regarded as a new subject in modern mathematics teaching and is one of the main topics in current educational research. In practice, it is also one of the main means of imparting knowledge. It is also the best way and means to implement quality education. Interest is the most active part of the learner’s enthusiasm and initiative, which is the main factor that motivates students to learn motivation and concentrate. The key to stimulate interest is to mobilize the enthusiasm of students,