认知理论和教学实践告诉我们,兴趣、动机是学生主动学习的前提,而“创设与运用教学情境(情景)”是激发学生的学习兴趣和动机,调动学生的学习积极性和主动性的重要措施.因此,《高中数学课程标准》在实施建议中强调教师应该充分利用丰富的数学素材,为学生创设能够主动进行探索、发现和创新的情境,鼓励学生发现数学的规律和问题解决的途径,使他们经历知识形成的过程.课堂教学情境,它是一把双刃箭,因为它在激发兴 Cognitive theory and teaching practice tell us that interest and motivation are the preconditions for students ’active learning, and “creating and using teaching situations (scenarios)” is to stimulate students’ interest in learning and motivation, to motivate students to learn actively and initiatively Therefore, the “High School Mathematics Curriculum Standard” emphasized in the implementation of the recommendations that teachers should make full use of abundant mathematical material, create situations for students to take the initiative to explore, find and innovate, encourage students to discover the laws of mathematics and ways to solve the problems , So that they experience the process of formation of knowledge. Classroom teaching situation, it is a double-edged arrow, because it excited