新部编人教版二年级上语文识字2《树之歌》优质公开课教学课件.pptx
树木丛生，百草丰茂。曹操观沧海绿树村边合，青山郭外斜。孟浩然过故人庄碧玉妆成一树高，万条垂下绿丝绦。贺知章咏柳,树之歌,2,初读课文,11,字词积累,梧桐 手掌 枫树 松柏装扮 桦树 耐寒 守约北疆 银杏 水杉 化石金桂 杨树 壮大 木棉,我会读,梧桐 手掌 枫树 松柏装扮 桦树 耐寒 守约北疆 银杏 水杉 化石金桂 杨树 壮大 木棉,摘橙子,梧,守,桐,枫,耐,掌,松,疆,柏,装,桦,银,杉,化,桂,杨,桐,枫,松,壮,柏,杉,化,棉,桂,仔细观察，找出有共同特点的字。,我会写,杨 桐 枫 松柏 棉 杉 桂,都是“木”字旁，与树木有关。,结构：,部首：,书写指导：,左右,左窄右宽，左高右低；横折折折钩要一笔写成，两撇间隔均匀，第二撇略长。,yán,杨,木,重难点字书写指导,结构：,部首：,书写指导：,左右,亻,左窄右宽，左右等高；竖弯钩起笔于竖中线，与撇相交于田字格中心。,huà,化,自由读课文，读准字音。说一说，课文讲了哪些树，这些树各有什么特点？,杨树高，榕树壮，梧桐树叶像手掌。枫树秋天叶儿红，松柏四季披绿装。木棉喜暖在南方，桦树耐寒守北疆。银杏水杉活化石，金桂开花满院香。,树之歌,11种树木,杨树高,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,榕树壮,梧桐树叶像手掌,比喻,枫树秋天叶儿红,松柏四季披绿装,拟人,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,松柏四季披绿装,木棉喜暖在南方,桦树耐寒守北疆,拟人,银杏水杉活化石,银杏、水杉为什么被称为活化石？,化石是没有生命的，可是，在生物界却存在着活的化石。原来在地质历史时期，许多动植物类群曾经繁盛一时，后来由于自然环境发生变化，这些类群中的绝大多数种类都灭绝了，成了化石，剩下来的个别种类，只是在局部地域得以保持下来，一直活到今天。,银杏是古老的较原始的裸子植物。远在2.7亿年前石炭纪末期，银杏已开始生长，到侏罗纪时已处于极盛时期，遍布全球。到了白垩纪，地球上的气候发生巨变，适应性更强的被子植物出现，银杏就趋向衰退了。到了第四纪，由于气候巨变，冰川的侵袭，银杏在欧洲、北美洲全部绝了迹，亚洲大陆也濒于绝种。,水杉在白垩纪已经出现在地球上了，后来也曾广泛地分布在北半球。到了第四纪，在巨大的冰川影响下，它被毁灭了，成为化石植物，终于退出生物界的舞台。1941年，我国植物学工作者第一次在四川省万县磨刀溪发现了一株奇树，后来又发现了更多的树木。经过研究鉴定，定名为水杉，是“活的化石”，成了20世纪植物学上的一项重大事件，轰动了世界。,金桂开花满院香,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,你想不想自己来介绍树木，编一句儿歌？可以说说树枝、树叶的形状，可以说说花开的样子、香味，也可以说说树木的习性。,柳树枝像_。,小辫儿,银杏叶儿像_。,小扇,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,桃树花开_。,红艳艳,石榴花开像_。,喇叭,棕树_在南方。,喜暖,视频欣赏,保护树木,随堂练习,一、连一连。,wú tónbin jinsn bishu shn,水杉边疆梧桐松柏,二、比一比，再组词。,壮（ ） 杉（ ）状（ ） 林（ ）,强壮,奖状,杉树,树林,三、词语积累。,枝繁叶茂 绿树成荫遮天蔽日 郁郁葱葱古木参天 亭亭如盖,课后习题参考答案,朗读课文。背诵课文。,朗读指导：本文是一首儿歌，描述十一种树木的特点，诗歌对仗工整，读起来朗朗上口，在读时要注意停顿和重读，怀着愉快的心情读出儿歌的韵味。 背诵指导：在熟读课文的基础上练习背诵。,读一读，记一记。,泡桐 白桦 云杉 翠柏桂花 枫叶 松子 白果,老师指导：这些词语是文中生字组成的新词，同学们可以采用多种形式的读来识记、积累词语。,po,读一读，想想下面几句话的意思。,要使小树成为木材需要十年的时间，而培养一个人才需要一百年。指培养人才很不容易。,十年树木，百年树人。,树长得再高，落叶还是要回到树根。比喻离开故土时间再长，最终还是要回归故土。,树高百尺，叶落归根。,n,人应该有志向，这样生活才会有动力，有方向。,树无根不长，人无志不立。,课后作业,认准字音、字形，背诵课文。你还知道哪些树木？试着编一编儿歌，说说它们的特点。,
