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现行普通高中课程标准实验教科书生物教材(人教版)第五章第一节内容中安排了“比较过氧化氢在不同条件下的分解”的实验,学生通过比较过氧化氢分解的快慢所处的条件,来了解过氧化氢酶的作用和意义.对于初步接触高中生物实验的学生来说很重要.笔者在一年又一年的教学中,每每遇到此实验都会发现新问题,也有大量的体会和收获,以下对此实验的几点思考跟大家分享.一、发现问题,提出问题发现的问题主要有以下几个方面:(1)实验中必须采用新
Current high school curriculum standard experimental textbook biology textbook (PEP) Chapter V of the first section contains a “comparison of hydrogen peroxide decomposition in different conditions,” the experiment, students compare the speed of decomposition of hydrogen peroxide In which conditions to understand the role of catalase and its significance for the preliminary contact with high school biology experiments is very important for the author in teaching year after year, often encounter this experiment will find new problems, There are a lot of experience and gain, the following experiments on this point to share with you.First, found the problem, put forward the problems found in the following aspects: (1) the experiment must be new