2022年只有一个地球教学设计4 .pdf
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1、13、只有一个地球教学设计1.理解本课 10 个生字,能读写下列词语:裹着、渺小、范围、恩赐、慷慨、滥用、枯竭、贡献、威胁、目睹、和蔼可亲、晶莹剔透、相互交错、生态灾难、生态环境。2有感情的朗读课文。3默读课文,理解课文内容,懂得“只有一个地球”的道理,增强爱护环境、保护地球的意识。4体会说明文用语的准确、严谨,学习说明的方法。教学重难点:引导学生懂得“只有一个地球”的道理,增强珍惜资源、保护地球的意识。课前准备:搜集地球相关资料,如:地球遭破坏的一些数据,资料。教学过程:第一课时一、导入新课,初读课文(课件展示地球美丽的面貌)孩子们,刚才我们看到的这个晶莹的球体,就是我们美丽的家园、人类唯一
2、生存的家园地球。今天,我们就一起学习只有一个地球,生齐读课题。1、生初读课文,读准生字字音,了解字意,交流沟通。2、把课文读正确、通顺、流利。二、熟读课文1、自读课文,想想课文写了关于地球的哪几个方面的内容。(地球的渺小、自然资源有限、目前人类无法移居)2、记得遨游太空的宇航员发出感叹:“我们这个地球太可爱了,同时又太容易破碎了。”听到这些,你有什么疑问?3、用自己喜欢的方式读课文,找出写地球可爱和容易破碎的句子读读。4、同桌交流、讨论,引导学生明白课文内容。三、重点练习,品读感悟1让学生感悟到地球美丽壮观,和蔼可亲。(1)首先让学生找到能表现出地球可爱的句子,自己读一读,然后教师引导在茫茫的
3、宇宙中,出现了一个裹着水蓝色的“沙衣”的晶莹透亮的地球,让学生感受到地球是那么美丽,那么亲切,让学生把地球的美读出来。接着让学生再深入理解“地球”这位人类的母亲,这个生命的摇篮的比喻意义。文中把地球比作母亲,说明地球给人类生命,把地球比作摇篮,说明地球哺育我们成长。这样,学生再读地球,这位人类的母亲,这个生命的摇篮,是那么美丽壮观,和蔼可亲时,就能对地球母亲的喜爱之情融入自己的朗读中。(2)让学生感悟地球是渺小的。(3)课件出示地球在太阳系中运行的情况,让学生只觉地球的渺小,接着让学生找出地球渺小的数据和有关的比喻,理解人类活动的范围很小,最后让学生朗读课文,读后评议。文档编码:CV5D1K6
4、B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 H
5、K4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H1
6、0N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4
7、ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S
8、10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7
9、文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:C
10、V5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F72、我们的地球母亲是那样的可爱,同时又是那样容易破碎。课文的哪些部分写出了地球母亲容易破碎?3、仔细阅读第三、四自然段,认识人们无节制地开采和破坏所造成地后果。(1)请大家读读第三、四自然段,
11、说说这部分让你看到了怎样的地球?(2)是谁造成了地球的这些变化?请用文中的话告诉我们!a理解“地球是无私的,枯竭”这句话。抓重点词“不加节制”体会人类地自私。b指导学生读这句话。(指导读出气愤、可惜等语气)c理解“人类生活所需要的,威胁”这句话,明白“本来”的意思,如果去掉它,行吗?为什么?(3)知道什么是“生态灾害”吗?举例说说。(4)教师出示“全国生态环境状况的几个数字”“我国生态环境状况的几个数字”,让学生感受我国环境状况。(5)看!所有一切的生态灾害都对人类的生存造成了严重的威胁,也给人类的行为发出了严重的警告。谁能带着自己的理解读好这段。四、布置作业:进一步收集有关资料,了解我国资料
12、和环境状况。文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7
13、文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:C
14、V5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6
15、B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 H
16、K4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H1
17、0N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4
18、ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7板书设计:13只有一个地球美丽、渺小自然资源有限不能移居别处精心保护地球第二课时教学过程一、复习巩固同学们汇报所收集的我国资源和环境状况的资料。(二)、学习
19、“目前人类无法移居”感悟“只有一个地球”。(1)让学生自由读文,你明白了什么?(2)引导学生结合上下文理解“枯竭”一词的意思。讨论:我们不能移居到别的星球上去吗?鼓励学生畅所欲言,各抒己见。理解重点词语“至少”,体会文章用词的严谨。再理解重点段落2请生联系自己的生活实际,交流讨论,为了保护地球,保护我们美丽的家园,我们应该做些什么。在交流讨论的过程中,相互启迪。3我们这个地球可爱又易碎,为了保护这一个地球,我们都行动起来,写写保护地球的标语吧。如:精心保护地球,造福子孙后代。还大地绿色,让天空蔚蓝。人齐动手,保护大地球。为了生存,保护地球。孩子们写的宣传口号真好!很有感染力、号召力。地球妈妈听
20、到这些文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编
21、码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D
22、1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L
23、3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C
24、3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6M4 ZR9P9S10A1F7文档编码:CV5D1K6B5L3 HK4C3H10N6
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