新课标指出“数学教学要紧密联系学生的生活实际,从学生的已有知识和生活经验出发,创设生动有趣的情景,引导学生开展观察、操作、猜想、交流等活动,使学生养成主动、深入地用数学眼光去观察生活,用数学头脑思考问题,通过动手操作、自主探索、合作交流的方式去解决问题,从而实现数学问题的生活化、社会化和实用化。” The new curriculum standard states: “Mathematics teaching should be closely linked with the students ’actual life. Students should have vivid and interesting scenarios starting from the students’ existing knowledge and life experiences, and guide students to observe, operate, guess and exchange activities so that students can develop Take the initiative to deeply use mathematics to look into the life, use the mathematical mind to think about the problem, and solve the problem through hands-on operation, independent exploration and cooperation and exchange so as to realize the life, socialization and practicalization of the mathematical problem. ”