《新课程标准》指出:“数学教学必须从学生熟悉的生活情景和感兴趣的事物出发,为他们提供观察和操作的机会。”标准中强化了数学教学的生活性、实用性,体现“数学源于生活,寓于生活,用于生活”的思想。学生是数学学习的主人,教师是数学学习的组织者、引导者和合作者。师生关系如何,直接影响着学生学习数学的兴趣,以及教师能否通过课堂帮助学生达到教学目标的要求。建立民主的师生关系、和谐宽松的教学氛围,是培养学生创新能力的必备环 The New Curriculum Standard states: “Mathematics teaching must give students the opportunity to observe and operate based on their familiar life situations and interests.” “The standard reinforces the life, practicality and embodiment of mathematics teaching ”Mathematics from life, living in life, for life " thinking. Students are the masters of mathematics learning, teachers are the organizers, guides and collaborators of mathematics learning. The relationship between teachers and students has a direct impact on students’ interest in learning mathematics and whether teachers can help students achieve their teaching goals through the classroom. The establishment of a democratic relationship between teachers and students, a harmonious and relaxed teaching atmosphere is essential for students’ creative ability