《数学课程标准》指出“数学教学必须鼓励学生积极参与数学教学活动,包括情感参与、思维参与和行为参与”。明确指出“必须关注学生的主体参与、师生互动”.学生是整个教学活动的中心,教师、教材、教学手段都应为学生的“学”服务。因此数学教学应积极创设民主、和谐的课堂氛围,让学生参与进来,激发学生的参与意识,使学生主动参与思维、参与体验,参与实践,在参与中获得 The Mathematics Curriculum Standard states that “mathematics teaching must encourage students to actively participate in mathematics teaching activities, including emotional participation, thinking participation and behavior participation.” Clearly pointed out that “students must be concerned about the main body participation, teacher-student interaction.” Students are the center of the entire teaching activities, teachers, teaching materials, teaching methods should be for students “learning ” service. Therefore, mathematics teaching should actively create a democratic and harmonious atmosphere in the classroom so that students can participate in, stimulate students’ awareness of participation, enable students to actively participate in the thinking, participate in the experience, participate in the practice and obtain the participation