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1 背景介绍概念是数学知识系统中的基本元素,是思维的起点.而当一节概念课同时是一个知识领域的导言课时,它的教学更有着不容忽视的地位.在温州新课程改革“城乡共化”教学展示活动中,笔者担任了一节概念课的公开教学:“常量和变量”.在第一节的试课课堂中发生了一个意外,引发了笔者对数学概念教学的思考.遂有意将第一节的试课与最后的公开课进行参照对比(据了解,两个班级学生基础相当),借以明晰在教学实践与反思中得到的启发.
1 Introduction Background concept is the basic element in the mathematical knowledge system, is the starting point of thinking.When a section of the concept of the same time an introductory course in the field of knowledge, its teaching has more can not be ignored status.In the new curriculum reform in Wenzhou Urban and rural common-shared “teaching and demonstrating activities, the author served as a public teaching of concept class: ” constant and variable "in the first section of the test class an accident occurred, triggering the author of mathematical concept teaching Then deliberately compared the first section of the test with the last open class reference (it is understood that the basis of the two classes of students equivalent), in order to clarify the inspiration in teaching practice and reflection.