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达尔文的自然选择学说是高中生物教材第六章的重点和难点内容,对比重、难点的教学突破,笔者在教学中、采用教材分析,要素提取,知识应用三段式教学方法,使难者变易、繁者变简,杂乱的变为有序,肤浅的变为深刻,现简述如下: 一、教材分析首先指导学生通读教材,并和学生一起进行教材所述知识的系统分析和阐述: 达尔文自然选择学说的主要内容有四点,即:过度繁殖、生存斗争、遗传和变异,适者生存。
Darwin’s theory of natural selection is the key and difficult content of the sixth chapter of biology textbook for senior high school. On the teaching breakthrough of heavy and difficult points, the author adopts three-section teaching methods such as teaching material analysis, factor extraction and knowledge application, , Simplified, messy become orderly, superficial into profound, are summarized as follows: First, the textbook analysis First of all guide the students to read the teaching materials, and teaching materials together with the students of the systematic analysis and elaboration of the knowledge: Darwin The main content of natural selection theory has four points, namely: over-breeding, struggle for survival, heredity and mutation, survival of the fittest.