《数学课程标准》指出:“数学教学要紧密联系学生的生活实际,从学生的生活经验和已有知识出发,创设生动有趣的情境。”因此,在教学实践中,教师要努力创设教学情境,沟通数学与现实的联系,唤起学生强烈的求知欲望,激发学生学习的主动性、创 The standard of mathematics curriculum states: “Mathematics teaching should be closely linked with students ’actual life, and create vivid and interesting situations based on students’ life experience and existing knowledge.” Therefore, in teaching practice, teachers should make efforts to create teaching Situation, communicate the connection between mathematics and reality, arouse students ’strong desire for knowledge, stimulate students’ initiative in learning