根据现有周长教学在学生周长概念的形成过程中缺乏充分的感知这一状况,我们整合周长的学习内容,开展“整合—体验”型数学的实践,追求以“问题情景为平台,数学知识为载体,自主探究是核心,反思体验为发展,数学思维是本质”的教育境界。通过激发动机,初步体验——探讨分析,认知体验——知识消费,再次体验——拓展深化,反思体验四环节的实施,引导学生在同一节课中对各种图形的周长进行集中感知与科学认识,同时采用数学学习报告等形式,引导学生逐步学会体验式学习。 According to the lack of adequate perception in the formation of the concept of perimeter of students in the current perimeter teaching, we integrate the content of perimeter learning and carry out the practice of “integration - experience” type mathematics to pursue “ As a platform, mathematical knowledge as the carrier, independent exploration is the core, experience for the development of reflection, mathematical thinking is the essence of ”educational realm. Through motivation, preliminary experience - to explore and analyze, cognitive experience - knowledge consumption, experience again - to deepen and reflect on the implementation of the four aspects of experience, and to guide students to focus on the perimeter of various graphics in the same lesson And scientific understanding, at the same time using mathematical learning reports and other forms, and guide students to gradually learn experiential learning.