12种瓜得豆教学设计.pdf

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1、教材简析：种瓜得豆 是一篇儿童科普读物，说明文。作者用通俗易懂的语言有层次地介绍了什么是基因、转基因技术以及转基因技术的应用。全文结构非常清楚，是典型的说明文体裁。全文为总分结构，每个分述部分都有总述句概括该部分的主要内容。课文运用了浅显的比喻和通俗易懂的语言，如，“种瓜得豆”“大管家”“发号施令”“搬家”等，把较为深奥的、现代高科技知识，很通俗地介绍给了读者，并且使之很容易被人接受。设计理念：“阅读是学生的个性化行为”。教师要善于引导学生从书面语言中获取信息，引导学生与文本对话，了解转基因技术知识。在引导学生感受、理解课文内容的过程中，创设情境，激发学生的学习积极性，提高学生理解和运用语言文

2、字的能力。教学目标：1朗读课文。了解课文介绍的科学知识。2学习课文的表达方法，了解作者是怎样一步一步地介绍转基因技术及其应用的。并体会课文语言的特点。3学会“泌、玫、瑰”3 个会认字和“搬、玫、瑰、柿、供”5 个会写字，掌握“搬家、玫瑰、西红柿、供不应求”等词语。教学重点：了解课文介绍的有关现代转基因技术科学知识。教学难点：学习说明文的表达方法及课文的语言特点。教学准备：收集现代转基因技术的知识和科研成果。课时安排：两课时教学设计：第一课时一、谈话导入，揭示课题俗话说：“种瓜得瓜，种豆得豆。”可是在科技飞速发展的今天，人们可以做到“种瓜得豆，种豆得瓜。”这靠的是什么技术呢？我们一起来学习课文种

3、瓜得豆，去了解这种现代高科技知识。（板书课题：种瓜得豆）齐读课题。二、朗读课文，整体感知1自由读课文，读准字音，读通句子。思考：种瓜怎么会得豆呢？这里有什么奥妙？2检查生字词语，以及课文读通情况。3默读课文，思考问题。（1）这篇课文主要介绍了一个什么科学知识？（2）课文围绕着这一知识都介绍了哪些内容?（3）课文是怎样一步步介绍的，读懂后，列一个阅读提纲。4交流汇报，朗读相应的段落。（1）课文介绍了一种现代高科技转基因技术的原理及应用。（2）课文围绕转基因技术主要写了三部分内容。第一部分（第1 自然段）写转基因技术能做到“种瓜得豆”。第二部分（第24 自然段）介绍了什么是转基因技术。第三部分（第

4、510 自然段）介绍了转基因技术的应用。（3）教师结合学生的回答，列出提纲：基因的作用什么是转基因技术转基因的技术现代转基因技术能做到“种瓜得豆”文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M

5、1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4

6、E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT

7、10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX

8、5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6

9、S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:

10、CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1在农业生产上的应用转基因技术的应用在医学上的应用三、质疑问难，释疑存疑1质疑：你有哪些不理解的句子或不明白的问题？先在

11、小组内交流，解决不了的提出来。2学生提出问题，师生根据情况，解决问题，需要在学习课文过程中解决的，可暂时存疑，下节课解决。四、布置作业1朗读课文。2抄写本课的生字新词。第二课时教学过程：一、直接导入，回顾课文主要内容。教师：今天我们接着学习12、种瓜得豆。这是一篇科普性的说明文，课文围绕什么来写？教师板书：转基因技术教师：俗话说：“种瓜得瓜，种豆得豆。”的确，瓜是瓜，豆是豆，种瓜怎么可能收获豆子呢？课文的第一自然段却告诉我们，现代转基因技术能做到“种瓜得豆”。教师板书：能“种瓜得豆”教师:围绕这一话题课文写了什么？哪些自然段？板书大括号？转基因技术2-4 应用 5-10 文档编码:CT10M4

12、T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A

13、2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4

14、M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10

15、M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M

16、1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4

17、E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT

18、10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1二、出示教学目标。三、探究新知。（一）学习课文2-4 自然段，了解什么是转基因技术并领会课文写法。1、学习第 3 自然段，了解基因的作用，感受课文语言特点。教师：请同学们看到课文2-4 自然段对什么是转基因技术的介绍。二自然段提出问题：什么是转基因技术呢？谁来接着读3 自然段？学生读。

19、教师：这个自然段写了什么？学生答基因的作用，如不能答，再读。教师：全班读，基因的作用是什么？（引出句子：这些基因是每种植物或动物的“大管家”，有的管叶子长得圆还是扁，有的管脚长得长还是短，关注省略号，追问：省略号提醒我们，生物的每一细胞里都有许多基因，还可能管什么？学生补充。教师小结：一句话，基因的作用就是发命令、下指示。“发号施令”）教师：这个句子用了什么写法？学生：（引出打比方）教师:在说明文中，这样的写法有什么好处？学生：2、学习第 4 自然段，了解课文介绍的有关转基因技术。教师：说明文，最主要的目的是让人读懂，在4 自然段中还有很多这样运用打比方的句子。课件出示：请勾画出 4 自然段中

20、打比方的语句。多读几遍，说说写了什么？并做批注。全班交流：教师:你勾画了哪一句，读一读，写了什么？文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:

21、CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6

22、HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 Z

23、G6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编

24、码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N

25、6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7

26、 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1师引读并课件出示：转基因技术其实就是把一种生物里的基因“搬”到另一种生物里。成功了说明搬到新家的大管家住得惯。失败了说明搬到新家的大管家住不惯、水土不服、被赶出去3、

27、跳出内容，看文章写法，体会作者如何一步一步介绍转基因技术。教师：2-4 自然段，围绕什么是转基因技术，先介绍了（基因的作用，后介绍了(转基因的技术)，分别对应3、4 自然段，它们都用了（打比方的写法）。学生补充，教师板书并小结，这样抓主要内容，并简单概括的方式叫阅读提纲。教师提问引起学生思考：通过阅读提纲，说说3、4 自然段可不可交换顺序？原因。请看 2 自然段在这里没有对应的内容删去，行吗？它有什么作用？（二）、学习课文5-10 自然段，了解转基因技术的应用。1、浏览课文，整体感知5-10 自然段的写法。老师：5-10 自然段写了转基因技术的应用，请快速浏览，说说是否也有这样的段落或者句子，

28、请在旁边就它的作用做上批注。2、小组合作，列出转基因技术应用的提纲。老师：让瓜结出豆并没有什么太大的意义，所以，也不会有科学家做这件事。什么事科学家才觉得有意义呢？同学们，小组合作学习，用抓主要内容、简单概括的方式，写出这部分的阅读提纲。学生合作学习，写出阅读提纲，并板书。老师巡视，并抽学生汇报，引导转基因事物的特性。图片展示。3、引导举例子的说明方法。老师：同学们，转基因技术在农业和医学上的应用，作者用了什么方法介绍？（引出举例子，文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C

29、1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T

30、6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2

31、R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M

32、6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M

33、4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1

34、A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E

35、4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1并板书）4、激发学生探究科学的兴趣。老师：除了作者举的例子，你还了解举例子吗？三个以上的学生说，教师展示收集到的图片。（五）、课后小结，作业延伸。1、请学生小结阅读提纲，体会作者如何一步一步地介绍转基因技术及其应用的。教师过渡：通过本课的阅读提纲，谁愿意来说说作者是怎样一步一步地介绍转基因技术及其应用。教师小结出这样的文章结构叫总分2、布置作业，拓展延伸。老师：学了种瓜得豆这篇课文，我们体会到没有做不到，只有想不到，正因为

36、人类有着超乎寻常的想象力与大胆尝试的科学精神，才有了我们看到的前所未有的新事物。但是，转基因技术是可以不受限制、任意妄为的吗？阅读链接就基因工程是好事还是坏事进行了介绍。课件出示作业：1、自读阅读链接话说基因工程。2、抓住主要内容，勾画重点段落和语句，写出阅读提纲。3、结合收集到的资料，展开想象，举例说说怎样合理使用基因工程技术为人类造福。板书：文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编

37、码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N

38、6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7

39、 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文

40、档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E

41、9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2

42、Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C

43、1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C112、种瓜得豆基因的作用？什么是（打比方）2-4 转基因的技术转基因技术能做到“种瓜得豆”1 农业应用（举例子）5-10 医学文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 Z

44、G6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编

45、码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N

46、6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7

47、 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文

48、档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1文档编码:CT10M4T6E9N6 HX5M1A2R2Y7 ZG6S4E4M6C1