《新课标》中明确要求:教师在学生数学活动中扮演组织者、引导者与合作者的多重角色,教师应联系生活实际,根据学生的实际,创设生动有趣的活动,引导学生学会操作、学会探索,学会思考和交流,从而达到共同发展的目的。因而,我在数学教学中,采用激趣、实践、交流三步教学法来活跃课堂气氛,增强学生学习的主体性,提高学生自主学习的能力。一、激发兴趣兴趣就像一块磁铁,它能深深吸引学生的好奇心,激起他们浓厚的求知欲,进 The New Curriculum Criteria clearly states that teachers play multiple roles as organizer, leader and collaborator in maths activities. Teachers should contact the realities of life and create vivid and interesting activities based on the students’ actual conditions so as to guide students to learn the operation, Learn to explore, learn to think and exchange, so as to achieve the purpose of common development. Therefore, in mathematics teaching, I use the three-step method of interest, practice and exchange to activate the classroom atmosphere, enhance the subjectivity of students’ learning and improve their ability of self-learning. First, to stimulate interest Interest is like a magnet, it can deeply attract students’ curiosity, arouse their strong curiosity, into