《函数的概念》是北师大版必修一第二章《函数》的部分内容,是函数教学的第二阶段,也是函数概念的再认识阶段.教学设计力图构造在平等的教学氛围,通过学生之间、师生之间的交流、合作和评价,实现共同探究、教学相长,引导学生从已有知识中挖掘数学内容,培养学生的发现意识和整合能力. “Concept of Function” is a part of the second chapter “Function” of Compulsory Edition of Beijing Normal University, which is the second stage of function teaching and also the re-cognition stage of function concept.Teaching design tries hard to construct an equal teaching atmosphere, Exchange, cooperation and evaluation between teachers and students to achieve common exploration, teaching and learning, guide students to tap the existing knowledge of mathematical content, develop students’ awareness of discovery and integration capabilities.