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1、说一说,你发现了什么?,8* 世界地图引出的发现,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路
2、,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路
3、,状元成才路,状元成才路,状元成才路,状元成才路,字词学习,静谧 呈现 凹进 精神大振 叩开 柯彭 枉费心机 浩如烟海 资料 召开 起源,静谧 呈现 凹进 精神大振 叩开 柯彭 枉费心机 浩如烟海 资料 召开 起源,m,zhn,wn,ho,z,zho,yun,青蛙过河,谧,振,枉,浩,资,召,源,【端详】 【不可思议】 【枉费心机】 【静谧】 【浩如烟海】,词语解释,不可想象,不能理解。 安静。 仔细地看。 形容文献、资料等非常丰富。 白白地耗费心思(多含贬义)。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路
4、,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路
5、,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,德国地球物理学家魏格纳首创大陆漂移学说的故事。,快速读课文,说说这篇课文主要讲了一件什么事情?,整体感知,魏格纳(18801930
6、):德国著名气象学家和地球物理学家。1915年,他出版了海陆的起源一书,全面论证了大陆漂移学说。为了获得第一手资料,进一步论证大陆漂移的假说,他先后4次赴北极的格陵兰岛进行考察,于第4次考察时不幸遇难。,课文解读,魏格纳性格豪放,天性好动,在静谧舒适的病房里坐卧不安,就像软禁在牢笼中的困兽一般。,性格:,对比,坐卧不安,静谧舒适,病房:,豪放、好动,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才
7、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才
8、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,自由朗读2-4自然段,填一填。,魏格纳在病房的世界地图上先发现_ _,接着发现_ _,然后又发现_ _。,突出部分与几内亚湾吻合,巴西的一块,巴西东海岸每,一个突出部分与非洲西海岸海湾吻合,巴西海湾与,所有大陆块都能较,非洲突出部分吻合,好吻合,突
9、然,他的手指慢了下来,停在地图上南美洲上巴西的一块突出的部分,眼睛却盯住非洲西海岸呈直角凹进的几内亚湾。瞧!这两个地方的形状竟是这般不可思议地吻合!,巴西突出部分,非洲几内亚湾,形状吻合,几内亚湾,巴西,非洲,形状吻合,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才
10、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才
11、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,魏格纳的猜想是什么? 魏格纳有了想法后,他又做了什么? 结果怎样?,读课文5-7自然段,说一说:,于是,这位年轻人的脑海 里形成了一个崭新的奇想:在 太古时代,地球上所有的陆地 都是连在一起的,后来因为不 断漂移,才分成今天的各个大陆,它们的海岸线才会惊人地吻合。,经过观察、分析世界地图,引出猜想。,猜想,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,
12、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,
13、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,1.著名科学家劝他打消念头,不必为此枉费心机,他还是坚信自己的想法。 (
14、“枉费心机”:白白耗费心思。),想要证实很艰难。,做法,3.在浩如烟海的资料中寻找大陆漂移的证据。(“浩如烟海”形容文献资料非常丰富。),2.在各大洲之间的联系和对比中进行考察。,你认为魏格纳是一个怎样的人?,有着顽强的毅力和孜孜以求的探索精神的人。,证实: 一种叫中龙的爬行动物,既见于巴西东部,也见于非洲西南部,显然,这些动物当时生活在同一块大陆上,否则,即使是插上翅膀也难以飞渡重洋。,结果,中龙既见于巴西东部,也见于非洲西南部,中龙插上翅膀也难以飞渡重洋,这些动物当时生活在同一块大陆上。,南美洲和非洲是连在一起的。,当时,地球上所有的陆地是连在一起的。,1912年,在法兰克福召开的地质学会
15、上,魏格纳作了题为大陆与海洋的起源的演讲,提出了关于大陆漂移的假说,引起了地质界的震动。,魏格纳能有这么重大的发现靠的是什么?,大陆漂移学说,拓展延伸,一种叫舌羊齿的植物化 石在印度、澳大利亚和非洲 的岩层中被发现,由于舌羊 齿的“种子”太大,不能随 风漂移,另一方面它容易破 碎,不可能漂洋过海。尽管现在大陆之间呈犬牙交错状,但仍能说明它们在以前曾是连成一片的。,大西洋两岸的非洲和南美洲的很多动物有亲缘关系。如两岸都有鸵鸟,而鸵鸟不会飞,更不会游,所以无法跨越大西洋。,板书设计,假说的提出,世界地图引出的发现,因病住院观察世界地图,惊人的发现不可思议地吻合,大胆假设大陆漂移假说,认真观察,假说的验证,请教专家肯定了假想,亲自考察广泛查阅资料,创立学说震动地质界,不懈论证,课堂小结,为一个偶然的发现而执着付出,能这样做的人注定是一个不平凡的人。正因为有这样的人在,我们才会离真理越来越近。这个世界充满了奥妙,只要我们细心、用心地去观察,去探索,就会发现很多有趣的知识。,课后作业,通过对课文世界地图引出的发现的学习,你想成为一名探索科学知识的小科学家吗?请拿起手中的笔,写一写你在生活中的发现吧!,