1、4.3.4 群落的空间结构,说课人:,说教材,说教法,说教学过程,M1,M2,四.群落的空间结构,说教法,说学法,M3,M4,1,一、说教材,1、教材的地位和作用,群落的空间结构是选自人教版高中生物新课标必修3第四章第三节的内容,是学习群落的演替和生态系统的结构的基础,因此是本章的重点内容。,1、教材的地位和作用,1、教材的地位和作用,一、说教材,Text in here,Text in here,群落的种间关系,群落的结构特征,群落的物种组成,群落的空 间结构,1、教材的地位和作用,三维目标,能力目标,一、说教材,2.教学目标,概述群落的垂直结构,培养学生观察和分析图像资料从而解决生物学问题的能力,形成知识与生活实际应用相结合的意识,重点,难点,3.教学重点难点,一、说教材,概述群落的垂直结构,分析垂直结构对动物分布的影响,二、说教法,直观教学法,抛锚式教学法,多媒体教学法,三、说学法,运用处理信息,思维能力,四.说教学过程,Text in here,板书设计,复习导入,课堂小结,1,讲授新课,2,4,3,布置作业,5,板书设计,模拟课堂,四.群落的空间结构,(一)群落的空间结构垂直
2、结构,1.概念:,2.引起植物分层分布的主要原因是:,光照强度,是指群落在空间上,的垂直分层现象。,(一)群落的空间结构垂直结构,在高山植物群落中,不同海拔地带的植物呈垂直分布主要是受温度制约的。,所有的植物群落的分层都是主要由光照强度所造成的吗?请举例说明。,(一)群落的空间结构垂直结构,吃高大乔木的种子,吃地面上的苔鲜和昆虫。,筑巢,以森林中层的昆虫为食,(一)群落的空间结构垂直结构,(3)引起动物分层分布的主要原因:,食物、栖息场所,(4)垂直结构的生物意义:,使生物群落在单位面积上能容纳更多的生物种类和数量,提高了群落利用环境资源(如阳光、空间、营养物质等)的能力。,小麦玉米套作,玉米黄豆套作,(一)群落的空间结构垂直结构,(4)垂直结构的生物意义:,使生物群落在单位面积上能容纳更多的生物种类和数量,提高了群落利用环境资源(如阳光、空间、营养物质等)的能力。,Thank You!,Click to edit title style,ThemeGallery is a Design Digital Content & Contents mall developed by Guil
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