(新统编人教版)三年级下语文《23.海底世界》优质公开课课件.pptx
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1、海底世界很奇妙,有奇异的景色和丰富的物产,你见过吗?读课文看看,跟你看到的一样吗?,你知道大海深处有什么吗?那里是个怎样的世界?,23 海底世界,海 参,海参,属海参纲,是生活在海边至8000米的海洋棘皮动物,距今已有六亿多年的历史。海参以海底藻类和浮游生物为食,全身长满肉刺,广布于世界各海洋中。,海参同人参、燕窝、鱼翅齐名,是世界八大珍品之一,我国南海沿岸种类较多,约有二十余种海参可供食用。因为海参具有提高记忆力、延缓性腺衰老、防止动脉硬化以及抗肿瘤等作用,所以海参不仅是珍贵的食品,也是名贵的药材。,章鱼:海洋软体动物,生活在海底。章鱼的腕足内侧有很多吸盘,有的体内有墨囊。,章鱼,自由朗读课
2、文,要求: 1.读准字音读通句子,遇到读不顺的地方可以多读几遍; 2.想一想,课文是从哪些方面介绍海底世界的?,学习提示1,差点 细胞 长达 储量 金属,ch bo d ch sh,窃窃私语 警报 肌肉 章鱼,qi s jng j zhng,通关检测1词语大作战,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,
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5、 海藻 达到 储量 铁矿 金属,字词学习,qi,s,jn,j,zhn,bo,zo,d,ch,sh,ch,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元
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7、成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,窃,私,达,储,警,胞,藻,属,章,海底抓鱼,肌,差,词语解释,A.波涛澎湃 B.窃窃私语 C.蕴藏 D.依然,依旧;仍然。( ) 私下里小声交谈,本课用来形容声音很小。( ) 形容水势盛大,奔腾起伏。( ) 蓄积而未显露或未发掘。( ),A,B,C,D,宁静,(环境、心情)安静。,警报,蕴藏,储量,窃窃私语,通过电台、电视台或用汽笛、喇叭等发出的将有危险到来的通知或信号。
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