《数学课程标准》中对学生数学知识的形成过程作了明确的要求:学习数学知识应从学生已有的生活经验出发,让学生亲身经历将实际问题抽象成数学模型并进行解释和应用的过程。在数学教学活动中,教师应激发学生的学习积极性,向学生提供充分经历数学活动的机会,帮助他们在数学活动过程中真正理解和掌握基本的数学知识与技能、数学思想和方法,获得广泛的数学活动经验。一、让学生在活动中经历新知呈现的过程在小学教学中教师要善于把数学内 Mathematical Curriculum Standards make explicit requirements on the formation process of students ’mathematical knowledge. Learning mathematical knowledge should be based on the students’ existing life experiences, so that students can experience the process of abstracting practical problems into mathematical models and explaining and applying them. In mathematics teaching activities, teachers should arouse their enthusiasm for learning and provide students with opportunities to fully experience mathematics activities so as to help them understand and master basic math knowledge and skills, mathematical ideas and methods in mathematics activities, and acquire a wide range of Mathematical activity experience. First, let the students experience in the activities of the process of presentation In the primary teaching teachers should be good at mathematics