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1教学目标(1)通过具体实例抽象出变量、函数等相关概念。(2)了解函数的三种表示方法,理解自变量取值和函数值的概念。(3)感受函数概念中蕴含的对应思想及数形结合思想。2教学重(难)点理解函数的概念。3教学过程3.1创设情境,初步形成概念情境1:某水库常常需要知道它的实际蓄水量,以满足防洪、抗旱的需要,你能为它设计出一个简便
1 teaching objectives (1) abstracted through the specific examples of variables, functions and other related concepts. (2) Understand the three representations of functions and understand the concepts of argument values and function values. (3) Corresponding thinking contained in the concept of feeling function and the idea of combining numbers with form. 2 teaching heavy (difficult) point to understand the concept of function. 3 teaching process 3.1 create a situation, the initial formation of the concept Scenario 1: a reservoir often need to know its actual water storage to meet the needs of flood control, drought, you can design a simple for it