《兰兰过桥》课文原文

《兰兰过桥》课文原文

兰兰过桥

作者：茅以升

兰兰的爷爷是桥梁工程师。有一天，他开着小汽车带兰兰去玩。在路上，他们遇见一条波浪滚滚的大河。爷爷没有停车，一直向大河里开去。兰兰吓得闭上了眼睛。

“兰兰，下车看看大桥吧!”听见爷爷的喊声，兰兰才敢睁开眼睛。她一看，原来是一座架在水里的桥，很像一幢长长的房子。

爷爷告诉她，这种桥叫潜水桥，是用特别结实的玻璃砖造的。

兰兰惊奇地站在潜水桥上，透过玻璃看见大大小小的鱼游来游去，各种各样的船只从桥顶上驶过来划过去。

兰兰看了一会儿，跟爷爷坐上汽车，来到鲜花盛开的原野上。兰兰下了车，一边采野花一边往前走，又遇到了一条小河。

兰兰说：“我想去河对岸玩，可是怎么过去呢?”

“别急，我带着桥呢!”爷爷打开皮包，取出一包塑料管子，说：“这又薄又结实的塑料管子，打进空气就成了一座轻巧的桥。”

兰兰跟着爷爷走上塑料桥。这桥又平又稳。

过了桥，爷爷打开放气孔。哧——塑料桥跑完气变软了，又自动折叠起来。爷爷把像雨衣一样大小的塑料桥放回提包里。

爷爷真是一位会变魔术的桥梁专家。

《兰兰过桥》教学设计

教学目标：

1、在独立识记生字的过程中科学地选择、运用看图识字(兰)、字理识字(程、砖、架、采)、区别形近字(波、座、坐)、认识多音字(划、薄)换语境识字的方法识字，提高独立识字的能力。

2、正确、流利地朗读课文，巩固根据提示概括课文的主要内容。

教学重难点：

“座”与“坐”二字在意义上的不同之处。

教学过程：

一、看图导入，分散识字

课件出示各种桥的图片，见过这些桥吗?简介各种桥。从古到今，桥在人们生活中发挥着巨大作用，随着科技的发展桥也在不断变化着。从木桥、石桥到立交桥。有一个小朋友兰兰他过的桥和我们见过的都不一样。提示课题。学习“兰”字，有什么好方法记住它?介绍兰花。

二、初读课文，学习生字

1、自由读课文，圈画生字。

2、小老师领读，正音。

3、提出难读、难认的字。

预设：梁：桥梁，梁还是姓。说一说你认识的姓梁的朋友。

程、砖、架：形声字。程：本义称量谷物。架：书架、鞋架。读句子架在这里做量词用。

波：利用偏旁识字。区别形近字：波——被。读句子：一()大河 ()的大河

划、薄：多音字

采：会意字。以手在树上采摘果实和叶子。读句子，一边。。。一边。。。造句。

座——坐;区别。看图，做动作区别。

特：读句子，特别可以换成“非常”“十分”。造句

稳：又()又()

4、同桌互相考一考、教一教。

5、学困生开火车读一遍。

6、举字卡

7、换语境识字：

火星人小兰和小梁乘坐一架特别波音号飞船来到地球。飞船在天空划翔的过程中，他们看到像波浪似的云朵，有薄

有厚，飞船采用破砖技术灵巧地落地了。

三、读课文，概括课文的主要内容。

1、指名分自然段朗读。思考课文主要讲了什么事?

2、通过兰兰过桥的故事，向我们介绍了()桥和()桥这两种特别的桥。

四、写字

1、结构分类

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