四川省宜宾市一中2017_2018学年高中生物下学期《DNA的复制》教学设计.doc

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1、1DNA 的复制教学设计课题名称 细胞的增殖科 目 生物 年 级 2017 级 适用班级 全体必修 3 单元(章) 3 课(节) 教学时间 2 课时一、教学目标知识目标: 1理解 DNA 复制的含义;2.掌握 DNA 复制的过程;3.概述 DNA 复制的生物学意义。过程与方法: 通过对 DNA 复制的学习,让学生掌握利用碱基互补配对原则分析问题情感、态度和价值观:让学生们认识到与人合作在科学研究的重要性以及技术的进步在科学探索中的重要作用。二、教学重难点重点 DNA 复制的条件、过程及特点难点 DNA 复制的过程三、教学过程预设环节名称 学习内容 教师活动形式 学生活动方式 教学设计意图 教师

2、反思环节 1情景导入:结合教材“问题探讨”中的情景进行讨论;展示 2008 年北京奥运会会徽学生提出自己的观点引发学生的兴趣和思考环节 2复习 DNA 分子的结构展示 DNA 分子的空间结构学生回答 DNA 分子结构的特点通过复习进入新知识的学习环节 3对 DAN 复制的推测讲授沃森和克里克对“半保留复制”的假说环节 4DNA 复制的条件、过程结合图 313 讲授 DAN复制的过程播放 DAN 复制过程的视学生结合图理解复制过程,观摩教学视频。 突破教学难点。2频环节 5DNA 复制的相关计算通过练习册上的例题进行讲解。学生动脑思考并与同学讨论加深学生对 DNA复制过程的理解和记忆环节 6 课堂训练四、教学反思本节课中需记忆的内容较多,因此,学生在课堂后期会出现疲倦的现象。因此,在教学过程中,教师应该适当注意学生的学习情绪,并采用适当的方法使得课堂活泼生动些。

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