一、教学目标(一)知识目标说明酶在细胞代谢中的作用、本质。(二)能力目标通过有关的实验和探究,学会控制自变量,观察和检测因变量的变化以及设置对照组。(三)情感态度与价值观目标1.通过阅读分析“关于酶本质的探索”的资料,认同科学是在不断地观察、实验、探索和争论中前进的。2.养成独立思考、分析资料、概括总结核心概念的学习习惯。二、教学重点和难点1.教学重点:酶的作用、本质2.教学难点: First, the teaching objectives (A) the goal of knowledge that the role of enzymes in cell metabolism, the essence. (B) the ability to target Through the relevant experiments and research, learn to control the independent variables, observe and detect changes in dependent variables and set the control group. (III) Emotional Attitudes and Values ​​Goals 1. By reading and analyzing the information on “the exploration of the nature of enzymes,” we agree that science is advancing in constant observation, experiment, exploration and debate. 2. Develop independent thinking, analysis of data, summarize the core concepts of learning habits. Second, teaching key and difficult 1. Teaching focus: the role of enzymes, the essence of 2. Teaching Difficulties: