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1、名师精编优秀教案桥梁远景图导学案学科：语文课型：新授设计：马希英时间：2014.5.21【学习目标】1、把握文章内容2、理清文章的说明顺序3、了解有关桥梁的知识。4、激发学生以科学的精神进行大胆而合理的想象。5、分析本文的说明方法6、品味本文语言的准确性和生动性。【学习重点】1、把握文章内容和基本结构2、分析本文的说明方法【学习难点】1、品味本文语言的准确性和生动性2、激发学生丰富而合理的想象。【自学导航】1、作者茅以升是我国著名的（）、（）、（）。他主持设计的（），是我国第一座由中国人自己设计建造的铁路公路两用桥；他还参加了新中国第一座现代化的大桥（）和（）的建造。他是中国近代桥梁工程学的重
2、要奠基人。同时作为一名教育家，他积极倡导科普教育，编写桥话中国石拱桥等大量的科普文章。2、正音承 载()颠 簸()桥墩()板凳()名师精编优秀教案点缀()极 薄()水涨()船高小巧 玲珑()袖()珍轮廓()妨碍()随身携()带3、释词:小巧玲珑:水涨船高：潜力：妨碍：点缀：【速读课文，整体感知】1、本文的说明对象是什么?2、文章中哪些段落是作者对未来桥梁的展望？【再读课文，深入感知】1、作者开篇采用什么方法引入课文?这样写有什么好处?2、第二自然段中的板凳指什么?为什么把桥比喻成板凳呢？“桥是什么?不过是一条板凳。”这句话采用什么修辞法？3、第三段在文章结构上的作用4、作者介绍未来的桥梁是从哪
3、两个角度来分析的呢？文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X
4、10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档
5、编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7
6、K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S
7、2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC
8、2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M
9、5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5名师精编优秀教案【当堂检测】1、常识填空（1）“胜似闲庭信步”语出词。（2）说明文的说明顺序包括（）、（）、（）（3）说明文的常见的说明方法有（）、
10、（）、（）、（）（）、（）、（）（）、（）2、在横线上填入恰当的关联词语：飞机的速度快，地球还只是这么大，人口也在增多，将来人们全都坐飞机上了天，挤来挤去，还能飞得快吗？桥的构件现在的直通通的棍子，柔和的，有如花枝一般；它头尾同样粗细，全身肥瘦相同的。这种长了“翅膀”的车子，越来越多，将来在大河修桥时，在水里造几个桥墩，当车子跳上第一个桥墩，桥墩的反弹，跳上第二个桥墩，河面多宽，多跳几跳，跳过去了，这样的“无梁桥”，该算是最进步的桥吧！3、下列句子中加点的成语使用正确的一项是（）。A这篇作文没有中心，东拉西扯，内容空洞，语言贫乏，令人莫衷一是。B从高处眺望，辽阔的绿色大草原上，几座白色的油井房
11、星罗棋布，煞是好看。C回到故乡，见到亲人，在外漂泊多年的他终于忍俊不禁，流下了辛酸的泪水。D西子湖畔桃红柳绿，春色迷人，外地游客纷至沓来，领略秀美的湖光山色。4、作者在说明桥的三个要素时，运用什么说明方法？并具体分析。答。5、说说将来的桥梁会有哪些变化？答：【能力训练】阅读下面各段，回答后面问题。将来一定会有没有水中桥墩的大桥。现在的郑州黄河铁路桥，长约三公里，河里有很多桥墩。但到将来，像这样的长桥，或者更长的桥，如果有需要的话，只要一个桥孔，就可以跨过江了。江中没有桥墩，对于过船、过水，当然好得多。这样长跨度的桥，一定也是很高的，最文档编码:CP7K5G10S2C6 HC2Y1R4M5X7
12、ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I
13、4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5
14、文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:C
15、P7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G1
16、0S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6
17、HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R
18、4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5名师精编优秀教案适宜于跨海。将来在很深的水里造桥，不必把桥墩沉到江底，而把桥墩做成空心的箱子，让它浮在水中。桥上无车时，它就浮得高些，桥上有车时，它就浮得低些。这些高低当然不能相差过多，以免行车困难。同时，还要把各孔桥梁，从桥的
19、这一头到桥的那一头，牢固地联系在一起，使整个桥梁成为一体，车在上面走，不致颠簸不稳。1选段中加点的“一定”、“约”两个词能不能省去，为什么？答：2第一段中运用了哪能说明方法，有什么作用？答：3试归纳选文的中心与层意。答：参考答案：说明对象：桥梁远景图2、D 4、：运用作比较的说明方法，把桥与板凳相类比来说明桥的结构；还运用了分类的说明方法，分别说明了桥梁、桥墩、基础三要素5、将会有可以弯曲的桥、很小很轻便的桥、无梁飞渡的桥。能力训练：阅读、不能省去。“一定”表示将来肯定会有没有水中桥墩的大桥，而“约”表明三公里只是一个大概的估计。如果省去，说明语言就不严密准确了。运用了举例子和例数字的说明方法
20、，通过举黄河铁路桥的例子，来说明将来没有水中桥墩的大桥的远景，运用列数字说明桥的长度，这样起到了具体准确说明事物的作用。选文的中心是：将来一定会有没有水中桥墩的大桥。一层（1 段）：介绍江中没有桥墩的大桥。二层（2 段）：介绍桥墩浮在水中的大桥。文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K
21、5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2
22、C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2
23、Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5
24、X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8
25、T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X1
26、0G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编
27、码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5名师精编优秀教案文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文
28、档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP
29、7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10
30、S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 H
31、C2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4
32、M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5文档编码:CP7K5G10S2C6 HC2Y1R4M5X7 ZC8T5I4X10G5