2022年人教版四年级语文上册29呼风唤雨的世纪教学设计 .pdf
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2022年人教版四年级语文上册29呼风唤雨的世纪教学设计 .pdf
呼风唤雨的世纪教学设计一、教学目标1、认识 5 个生字,会写 12 个生字。正确读写“呼风唤雨、洞察、依赖、奥秘、改观、探索、联系、哲学”等词语。2、有感请地朗读课文,体会语言简洁、条理清楚的表达特点,能联系生活实际,谈自己的阅读感受。3、了解 20 世纪科学技术创造的奇迹及威力,感受科学技术发展的惊人速度,及给人类带来得巨大变化,激发热爱科学的情感以及学习科学、探索科学奥秘的兴趣。二、重点难点1、重点:了解 20 世纪科学技术给人类带来得巨大变化。2、难点:理解课文中一些含义深刻的词语和句子。三、教学策略与手段教学方法与手段:联系生活实际,通过展开丰富想象,并运用多媒体课件及相关补充资料,激发学生学习的兴趣和愿望。学习方式:本课给学生充分的发展空间,适当的采用小组合作探究的学习方式,教师给予必要的引导,让学生的思维活跃起来,让他们进行充分的交流探讨。四、课前准备课件、搜集 20 世纪科学技术发展成就的相关资料五、教学过程教学过程乡镇个人意见意见第一课时一、创设情景,导入新课同学们,我们先来看一组镜头。(出示课件)老师随画面内容旁白:孩子们,当你按动遥控器看电视的时候,当你打开冰箱取冷饮的时候,当你拨通电话与同学交谈的时候,当你登录因特网查阅资料的时候你是否感受到了科学技术的威力?你是否感受到了科学技术正在创造着一个又一个神话?你想了解科学技术创造的一个个奇迹吗?让我们一同走进呼风唤雨的世纪,一同去感受绚丽多彩的生活吧!(齐读课题:呼风唤雨的世纪)二、解释课题,质疑牵引1、理解呼风唤雨:当看到呼风唤雨这个词的时候,你首先想到什么?在这里又作何理解呢?(呼风唤雨:原指神仙利用法力能使天刮风下雨,现在引申为“能够支配自然的一种巨大力量。”)2、看了课题,你有问题想提吗?(是谁在呼风唤雨?是怎样在呼风唤雨的?呼风唤雨的世纪是哪一个世纪?世纪是什么意思?)(一百年为一个世纪,2007 年属于 2l 世纪)3、过渡:下面就让我们一起带着各自的疑问走进呼风唤雨的世纪,一起去看看人们是怎么利用科学来控制、支配自然吧。三、初读课文,整体感知1、读熟课文,自学字词。现在请大家自由读课文,把课文读通、读顺、读准,读不好的地方多读几遍。一边读,一边注意自己的感受,如果有不懂的地方,可以在旁边注上问号。(生用自己喜欢的方式自由读课文)2、检查自读情况:文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1(1)出示生词读、理解,相机出示图片帮助理解词语:农耕社会依赖 潜水艇、船舶、原子核、程控电话、因特网、腾云驾雾、归根到底、出乎意料(2)随机书写课堂作业本中“认一认,写一写”的生字。让学生选择最容易写错的字进行书写。(3)指名分节读课文,点评。四、再读课文,感悟大意1、仔细读课文,把你能感受到20 世纪呼风唤雨的句子勾画出来多读几遍。2、通过读书你了解到课文的哪句话与课题的意思相同呢?出示中心句子:(20 世纪是一个呼风唤雨的世纪)你从课文中哪些句子、段落感受到了20 世纪是一个呼风唤雨的世纪?五、布置作业1完成课堂作业本中1、2 题的作业。2熟读课文。第二课时一、复习检查,听写词语。完成课堂作业本中第4 题的作业。(教师说意思,让学生写词语或诗句,请一名学生上台板书)二、抓住主线,切入文本。在我国的传说中,()就具有这样神奇的能力。世纪我们人类靠()也具有了呼风唤雨的能力。师:远古时代,人类日出而作,日落而息,过着完全依赖自然的生活。世纪现代科学技术的到来,使人类的生活发生了翻天覆地的变化。今天,我们就要通过对课文的学习,来文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1了解科学技术创造的奇迹,感受科学技术发展的惊人速度。三、深入文本,理解内容(一)百万年来一成不变的生活1、仔细阅读课文 23 自然段,完成填空人类在上百万年的历史中,一直生活在一个依赖自然的农耕社会。那时没有(),没有(),没有(),也没有()。2、展开想象,各个语文小组选择一个话题进行讨论。话题(1)没有电灯、电视、电话我们的生活会怎样?话题(2)没有飞机、汽车、火车我们的生活会怎样呢?话题(3)如果让你生活在那样一个时代,你该怎么办呢?3、每个小组推选一个代表进行交流,在交流中鼓励同学之间互相补充,互提建议,然后填空。人类在上百万年的历史中,一直生活在一个依赖自然的农耕社会。那时没有(),没有(),没有(),也没有(),真是()!4、教师小结:听了大家来自内心的发言,我明白了农耕社会人们生活的情况。按我们的想法,那真是没法子过啊!可尽管如此,人们还是渴望能拥有超出自身能力之外的奇特魔力,所以在中国古代的神话传说中,有了很多表达人们这种愿望的人和事。(二)寄托人类梦想的美好愿望1、为了寄托自己美好的愿望,说说古时候的人类想出了一文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1些怎样的神话故事,创造了一些怎样的神话人物。鼓励学生能调动大脑储备,说出一些在课外看到的神话人物或传说。2、学生交流,然后教师根据学生的回答出示填空,请学生展开想象完成。“嫦娥奔月”寄托着人类()的美好愿望。“葫芦小金刚”寄托着人类()的美好愿望。“隐身娃”寄托着人类()的美好的愿望。()寄托着人类()的美好愿望。3、我们的祖先大概做梦也不会想到,这些美好的愿望如今都实现了,靠的是什么?是现代科学技术。(三)一百年来翻天覆地的变化1、在短短一世纪中,我们的生活因为科学技术的利用和科学技术的不断创新发生了翻天覆地的变化。读课文第3 自然段,找找哪一句话可以形容这一切。2、朗读诗句“忽如一夜春风来,千树万树梨花开”,体会诗句原来的意思。联系课文理解后填空。“春风”指的是(科学技术)“梨花”指的是(利用科学技术获得的许多奇迹般的发现和发明。如电视)在课外搜集资料的前提下,鼓励学生说出更好的新方面和新发现。3、朗读句子“在 20 世纪一百年的时间里,人类利用现代科学技术获得那么多奇迹般的、出乎意料的发现和发明。”体会“发现”和“发明”的意思,感受文章用词的准确性。(教文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1师随即出示 20 世纪的发现与发明的事例,在加深理解的同时,对 20 世纪的成就有更深的了解。)X 射线:1901 年由德国物理学家伦琴发现,被广泛应用于医疗诊断和物质结构的研究。维生素:1912 年,英国化学家霍普金斯在使用人工合成饲料喂养动物的过程中发现了维生素。青霉素:1928 年,英国细菌学家弗莱明从霉菌的原液里发现青霉素,它至今仍是人类有史以来发现的最好的抗菌素。激光:1958 年,美国人肖洛和汤斯发现激光。洗衣机:1906 年,美国人费歇设计制造了世界上第一台电动洗衣机。磁悬浮列车:1911 年由俄国一位教授最早做出磁悬浮列车的模型。霓虹:1912 年由法国化学家克劳德发明。彩色胶片:1923 年,戈德斯基和曼内斯制成世界上第一张彩色胶片。冰箱:1923 年,瑞典两个工程师制成了世界上第一台电冰箱。电视:1925 年,苏格兰发明家贝尔德首次推出电视系统。圆珠笔:由匈牙利人比罗兄弟1938 年独立设计发明。因特网:1969 年,美国五角大楼首创因特网。移动电话:20 世纪的三四十年代,在第二次世界大战中出现的步话机是移动电话的雏形。20 世纪 70 年代,民用的对文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1讲式移动通信业务开始普及。现在,移动通信可以随时随地进行。4、体会“百万年一成不变的生活”和“一百年翻天覆地的变化”这样写的用意。先让学生和相互之间讨论,然后进行交流。在交流中教师补充说明,从而明白科学技术使一世纪的改变超过了人类上百万年的总和。再次补充一份关于20 世纪其他发明和 21 世纪初的新发明或新发现的材料,学生阅读、体悟,然后说说读后感受。A、农业、畜牧业:培育出籼米杂交水稻,总产量居世界第一。培育出117 个畜禽优良品种与品系,成为世界上最大的肉、蛋、水产品生产国。农产品量快速增长,营养水平改善,人均寿命比世界平均水平多5 岁。B、交通方面:火车的提速,高速公路总里程达2 万千米,居世界第二位。民用机场1 百多个,航线总线 1165 条,运输总量居世界第 9 位。C、把煤、水、核燃料等能源转化为电能,发电量居世界第 2 位。D、医疗保健:脊髓灰质炎、麻疹、白喉、百日咳、流行性脑膜炎、乙型肝炎等得到有效防治,减少发病约3 亿人次,减少死亡 400 万人。E、信息技术:紧跟新技术的潮流,报刊、书报采用激光照排系统,平均3 点 3 个人中就有一部电话,每天上网超过1小时的网民达 4331 万户,居世界第三位。文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5W6E5 HT6Y9T2S8R10 ZX5N10G8Y10J1文档编码:CV10X10F5