部编三上18-富饶的西沙群岛PPT.ppt
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我国南海中四大群岛（东沙群岛、南沙群岛、西沙群岛、中沙群岛）之一。
主要岛屿有永兴岛、赵述岛、珊瑚岛等。
盛产鱼类、鸟类、海参、海龟等。
南海诸岛地理位置非常重要，是太平洋的交通咽喉，自古就是我国的领海，是我国的海防前哨。
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上下结构：
半包围结构：
优浅错虾挺鼓数,厚,富,岩,宝,贵,读课文思考：
课文从哪些方面介绍了西沙群岛？
西沙群岛给你留下了怎样的印象？
课文讲解,海水,海底,海滩,海岛,西沙群岛印象：
美丽,富饶,物产丰富,鸟类繁多,仔细再读课文，思考：
西沙群岛有哪些魅力？
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那里风景优美，物产丰富，是个可爱的地方。
同学们，找一找全文是围绕哪一句来描写的？
概括写出了西沙群岛的富饶、美丽。
西沙群岛一带海水五光十色，瑰丽无比：
有深蓝的，淡青的，浅绿的，杏黄的。
一块块，一条条，相互交错着。
因为海底高低不平，有山崖，有峡谷，海水有深有浅，从海面看，色彩就不同了。
这一段介绍西沙群岛的_是_。
海水,五光十色,为什么海水会呈现不同的颜色？
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海参到处都是，在海底懒洋洋地蠕动。
大龙虾全身披甲，划过来，划过去，样子挺威武。
这一段主要讲了海底的哪些动物？
海参一般体长1020厘米，特大的可达30厘米，海参靠肌肉伸缩爬行，每小时只能前进三米左右，比蜗牛还慢。
拓展,（珊瑚）有的像绽开的花朵，有的像分枝的鹿角。
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用“有的像有的像有的像”说句子。
珊瑚有的像蘑菇，有的像云朵，有的像树枝，有的像蜂窝，真是千姿百态。
课文中说海参是怎么移动的？
蠕动,“蠕动”给人一种什么感觉？
懒洋洋,“到处都是”说明什么？
多，物产丰富,鱼成群结队地在珊瑚丛中穿来穿去，好看极了。
课文是从哪几个方面具体介绍鱼多的？
“成群结队”形容物种聚集的样子。
从这个词我们可以体会到海里的鱼的数量非常多。
有的全身布满彩色的条纹；有的头上长着一簇红缨；有的周身像插着好些扇子，游动的时候飘飘摇摇；有的眼睛圆溜溜的，身上长满了刺，鼓起气来像皮球一样圆。
这句话运用了排比、比喻的修辞方法，写出了海里的鱼外形好看，而且品种多。
各种各样的鱼多得数不清。
正像人们说的那样，西沙群岛的海里一半是水，一半是鱼。
为什么人们会说“西沙群岛的海里一半是水，一半是鱼”？
这句话写西沙群岛里的鱼非常多，并非真的是水和鱼各占一半，而是运用夸张的手法，强调了西沙群岛“物产丰富”的特点，显得恰当而形象。
课文是怎样介绍西沙群岛的鸟多的？
西沙群岛也是鸟的天下。
岛上有一片片茂密的树林，树林里栖息着各种海鸟。
遍地都是鸟蛋。
树下堆积着一层厚厚的鸟粪，这是非常宝贵的肥料。
树多,富饶的西沙群岛，是我们祖祖辈辈生长的地方。
随着祖国建设事业的发展，可爱的西沙群岛必将变得更加美丽，更加富饶。
讨论一下从哪些地方可以看出西沙群岛的美丽和富饶？
海水的奇异色彩,每天免费分享，请微信搜索公众号：
好老师好童学教学团队,总起：
风景优美、物产丰富,分述,总结：
更加美丽、更加富饶,海水：
五光十色瑰丽无比海底物产：
珊瑚、海参、大龙虾、鱼海岛：
鸟的天下,板书设计,请同学们一起来欣赏一下海底世界的模样！
拓展延伸,1.看拼音，写词语。
xnzhunwiwlnsntiojin（）（）（）（）doyhishnynshzbi（）（）（）（）,形状,威武,懒散,挑拣,随堂练习,岛屿,海参,岩石,祖辈,海参到处都是，在海底懒洋洋地蠕动。
大龙虾全身披甲，划过来，划过去，样子挺威武。
这段话用了_的修辞手法，描写了海底的小动物的特点，“懒洋洋”“_”是形象化的写法，描写了_活动时的姿态，“威武”则写出了大龙虾的_及_特点，使得语言活泼新鲜而有趣。
拟人,蠕动,海参,外形,行动,2.根据课文内容填空。
3.课外积累。
1.飞流直下三千尺，疑是银河落九天。
（唐）李白望庐山瀑布2.君不见黄河之水天上来，奔流到海不复回。
（唐）李白将进酒3.横看成岭侧成峰，远近高低各不同。
（宋）苏轼题西林壁4.会当凌绝顶，一览众山小。
（唐）杜甫望岳,课后习题参考答案,有感情地朗读课文。
说说从哪些地方可以看出西沙群岛风景优美、物产丰富。
朗读指导：
本篇课文的朗读基调是喜爱、赞美的。
语气亲切，语调优美、自然，节奏明快，充分体现西沙群岛优美的景色和丰富的物产。
朗读示例：
西沙群岛一带/海水五光十色，瑰丽无比：
有深蓝的，淡青的，浅绿的，杏黄的。
一块块，一条条，相互/交错着。
因为/海底高低不平，有山崖，有峡谷，海水有深有浅，从海面看，色彩/就不同了。
参考答案：
海面上海水五光十色，瑰丽无比，海底的岩石上长着各种各样的珊瑚，海底的水产资源丰富，海滩上有千奇百怪的贝壳和有趣的海龟，海岛上的鸟也很多从这些方面都可以看出西沙群岛风景优美、物产丰富。
老师指导：
同学们可以选择西沙群岛美丽的风景，也可以选择它丰富的物产进行介绍，注意抓住景物和物产来突出它的美丽或富饶。
选择你喜欢的部分，向别人介绍西沙群岛。
从下面的图中选择一幅，写几句话。
色彩斑斓的鱼儿成群结队地游来游去，像在参加盛大的节日游行。
海葵互相手拉手，跳着欢快的摇摆舞，还有小鱼给它们伴舞呢！
骨碌碌的转着眼珠子看着周围的一切，还不时翻几个高难度的跟头，好叫人不要小看了它。
辽阔无垠的海面上，只只海鸥自由地翻飞盘旋着。
它们一会儿展翅飞向高空，一会儿又飞回海面捕食，快乐地嬉戏。
有感情地朗读自己喜欢的语句，抄写文中优美的段落。
假如你是小导游，你想怎么向初来此地的游客介绍西沙群岛？
收集有关海洋的知识，了解海洋世界。
课后作业,
升级会员 