新课标人教版小学语文四年级上册29《呼风唤雨的世纪》精品教案
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Gjqv
新课标人教版小学语文四年级上册29《呼风唤雨的世纪》精品教案
学习目标:
1、
2、
3、
4、
识记生字、会写生字,正确读写词语。
能有感情地朗读课文,理解课文中含义深刻的句子。
能说出20世纪科学技术给人类带来的巨大变化。
教育学生从小爱科学,学科学,利用科学,了解现代的新
科技和取得的新成就。
教学重点:
了解20世纪科学技术给人类带来的巨大变化。
教学难点:
理解课文中一些含义深刻的词语和句子。
课前诵读古诗
教学过程:
一、预习探究
1、揭示课题 同学们,这节课我们学习第29课,和作
者路甬祥
爷爷一起走进《呼风唤雨的世纪》(板书课题),去感受生活的精
彩。请大家齐读课题
。
2、从题目中你想知道什么?生说。大家想知道的问题真不少,那
让我们从文中寻找答案吧。
3、自由读课文,要求:读准字音,读通句子。想一想课文围绕哪
句话写的?
二、合作交流
1、检查字词。出示小黑板。
2、指生读,说意思
3、指读课文.
4、小组内交流自学情况
(20世纪的科技成就)
5、文章围绕哪句话写的?出示。齐读
三、品读体验、
1、现在我们以前来细的品读课文吧。看看20世纪都取得了哪些
成就?
指名说说自己画出的句子。(第四自然段的第一句)
这么多成就给我们的生活带来了什么?引读“人类生活
的······物质生活”
对
这些成就,这些改变,你是什么心情?把这种心情读出来。指
读、齐读。(引导读整段,读出高兴、激动
或者自豪、幸福的语气)
大家发现没有,这段话用什么方法在告诉我们20世纪的成就?
(举例、对比)有什么好处吗?
2、还知道哪些20世纪的高科技成就?(展示课前搜集的图片、
资料)小组交流。
齐读(20世纪是一个呼风唤雨的世纪。)
过渡:我们能感受到这么大的成就,这么大的变化
,都是20世纪
的科学技术带给我们的,我们怎能不说——20世纪是一个呼风唤
雨的世纪
3、回顾了20世纪科学技术带给我们的变化,那我们祖先生活得
农耕社会是什么样的?生说。他们的的幻想在哪儿?
从句子来看,他们有哪些美好愿望?出示
句子(理解“千里
眼”“顺风耳”“腾云驾雾”)“千里眼、顺风耳”旧社会指能看得
很远和听
的很远的人。在课文中是指人们想象中的超脱自然地能
力。在科技不发达的年代,人们只能用这种方式来
自己的美好愿
望。
现在能让“千里眼”“顺风耳”“腾云驾雾”变成现实吗?说一说
文中有一句诗对科学技术进行了称颂,在哪儿?出示句子:
20世纪的成就,真可以用“忽如一夜春风
来,千树万树梨花开”
来形容。读句子,简单理解。
如果把诗人写的雪景比作20世纪的科学
成就,那这个成就是怎样
的?能将这种“大”和“快”读出来吗?请几名同学读诗句。师
范读。
5、 过渡:20世纪的科学技术实现了祖先的那么多幻想,我们
又怎能不说——20世纪是一
个呼风唤雨的世纪。
6、是什么给我们的生活带来这么大的改观和改变的?(板书:科
学技术
)具体说,是人类(板书:人类)利用科学技术获得的发
现、发明给我们带来的。(板书:发现、发明)
“发现”和“发明”有区别吗?试着用两个词各说一句话。
7、
发现和发明:“发现”是指人们利用现代科学技术,经过研
究、探索
等看到或找到了一些前人没有看到的事物或规律;“发
明”在本课中则是指创造出的新事或新方法。前者
是指在前人
的基础上有了量的增加,后者则有了质的变化。谁能读一读这
一段?自豪的语气。
8、过渡:20世纪的科学技术使人类的生活发生了如此大的改观
和改变,我们不得不说——2
0世纪是一个呼风唤雨的世纪。
9、正如英国的数学家、哲学家伯特兰.罗素所说的
“科学正为人
类创造着比以往任何时代都要美好的生活”,齐读。
10、讨论: 课文最后一
句话,在充分朗读的基础上自由畅想,畅
想在科学技术的推动下,我们的未来生活会变成什么样? 小结:正是这些发明和创新使我们的生活发生了翻天覆地的变化。
让我们从小学科学、爱科学,让未
来在我们手中变得更美好。
四、巩固延伸:
让我们当一名小小设计师,描绘一下你明日美好
的未来。(可
以用文字描述,也可以用画图表现)你现在就是小小设计师,描
绘一下你心中明日
的美好前景吧!
29呼风唤雨的世纪
现代科学技术
发明 发现
人类生活