《数学课程标准》指出:数学教学活动必须建立在学生的认知发展和已有的知识经验基础之上。教师应激发学生的学习积极性,向学生提供充分从事数学活动的机会,帮助他们在自主探究和合作交流的过程中,真正理解和掌握数学知识与技能、数学思想和方法,获得广泛的数学活动经验。学生是数学学习的主人,教师是数学学习的组织者、引导者与合作者。为此,我本着:加强数学实践活动,让每个学生在“自主探究、合作交流”中学会方法,善于学习,促进学生自主发展;让每一 The Mathematics Curriculum Standard states that mathematics teaching activities must be based on the students’ cognitive development and existing knowledge and experience. Teachers should stimulate their enthusiasm for learning and provide students with opportunities to fully engage in math activities to help them understand and master math knowledge and skills, mathematical ideas and methods and acquire extensive experience in math activities during their own exploration and cooperation and exchange. . Students are the masters of mathematics learning, teachers are the organizers, guides and collaborators of mathematics learning. To this end, I have the spirit: to strengthen the practice of mathematics, so that each student in the “independent inquiry, cooperation and exchange,” learning methods, good at learning, to promote student self-development; let each