17-要是你在野外迷了路.21市公开课金奖市赛课一等奖课件.pptx

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zhn,第3页,摘星星,慌,辨,导,实,盏,永,闯,忠,碰,稠,稀,渠,积,第4页,指,我会写,针,帮,助,导,永,碰,特,积,第5页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,上下结构：,左右结构：,帮,导,针,助,碰,特,积,永,指,独体字：,第6页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,自然存在，自然产生,(,区分于“人工、人造”,),。,依据不一样事物特点，在认识上加以区分。心里不从容，动作忙乱。带路人。,A.,天然,B.,慌张,C.,向导,D.,区分,A,D,B,C,词语解释,第7页,整体感知,本文以诗歌形式讲述了在野外迷路后区分方向,方法。,四种,第8页,太阳,北极星,大树,积雪,第9页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,要是你在野外迷了路，,可千万别慌张。,大自然有很多天然指南针，,会帮助你区分方向。,比喻,指大自然中自然现象。,课文解读,第10页,指南针：,一个,判别方位,简单仪器。,指南针前身是中国古代四大创造之一司南,。主要组成部分是一根装在轴上能够自由转动磁针，磁针在地磁场作用下能保持在磁子午线切线方向上，磁针北极指向地理北极，利用这一性能能够区分方向。惯用于航海、大地测量、旅行及军事等方面。,知识备查,第11页,古代司南,指南针,第12页,大自然中“天然指南针”是怎样帮助人们区分方向呢？轻声读课文第,2-5,小节，然后在小组里讨论。,第13页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,太阳是个忠实向导，,它在天空给你指点方向。,忠实,向导,忠诚可靠,带路人,请同学们结合生活实际说一说太阳是怎样给我们指点方向？,第14页,清晨,黄昏,东,西,太阳是个忠实向导,第15页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,中午时候它在南边，,东,西,地上树影正指着北方。,第16页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,北极星是盏指路灯，,它永远高挂在北方。,要是你能认出它，,就不会在黑夜里乱撞。,北极星是盏指路灯,把北极星比作指路灯，形象地告诉我们在黑夜怎样利用北极星识别方向。,比喻,第17页,天上星星那么多，哪颗是北极星呢？,先看北斗七星，把北斗七星勺边上两颗小星连起来，从勺口方向延伸至两颗小星距离约,5,倍处，那颗最闪亮星就是北极星。,第18页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,要是碰上阴雨天，,大树也会来帮忙。,枝叶稠一面是南方，,枝叶稀一面是北方。,“大树”能给人帮忙，把树当成人来写，利用了拟人修辞手法。,大树也会来帮忙,拟人,第19页,思索：树叶稀稠和阳光有什么关系？,树枝叶稀稠和太阳光照射时间长短及照射量多少相关。树冠南面受太阳光照射多，树叶茂密；北面因为受遮挡，光照较少，树叶长得稀。,稠 稀,南 北,第20页,雪尤其怕太阳，,沟渠里积雪会给你指点方向。,看看哪边雪化得快，哪边化得慢，,就能够分辨北方和南方。,思索：怎样用沟渠里积雪来分辨南北方向？,第21页,冬天，太阳从南边射过来，沟渠里积雪朝南一面受照射时间长，化得快，积雪朝北一面，太阳照射不到，雪化得慢。,北 南,第22页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,经过学习，你知道了哪几个野外区分方向方法？,四种,方法,现象,晴天看太阳,晚上看北极星,雨天看大树,雪天看积雪,太阳中午在南边，树影指北方。,北极星在北方。,枝叶稠那边是南方，稀那边是北方。,朝南一面化得快，朝北一面化得慢。,第23页,要是你在野外迷了路，,可千万别慌张。,大自然有很多天然指南针，,需要你细细观察，多多去想。,告诉了我们找到天然指南针方法：细细观察，多多去想。,首尾呼应,第24页,思索：你还知道哪些区分方向方法？,年轮密集是北方，,年轮稀疏是南方。,第25页,岩石上有青苔一面是北侧，,另一面为南侧。,第26页,观察蚂蚁洞穴，洞口大都是朝南。,第27页,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,黑夜：北极星（北）,阴雨天：枝叶稠（南）枝叶（稀）,天然指南针,为你指方向,中午：太阳（南）树影（北）,雪后：沟渠里积雪,化得快（朝南）,化得慢（朝北）,要是你,在野外,迷了路,结构梳理,第28页,课堂小结,这首诗歌介绍了在野外迷路后区分方向四种方法，告诉我们要留心观察周围事物，发觉大自然奥秘。,第29页,查理和罗拉：,万一我在不著名地方迷路怎么办,拓展延伸,第30页,1.,读拼音，写汉字。,bin bi lun chun,（）（）,j xu x yo,（）（）,区分,乱撞,积雪,需要,随堂练习,第31页,2.,读读写写。,尤其 分别 别处,_,指挥 手指 指南针,_,方向 地方 千方百计,_,他人 区分,指导 食指,方便 方法,第32页,3.,知识拓展。,闲话“指南针”,俗称指南针实际我指北地有磁偏角 定向要慎重,幼时谓司南一勺盘中转勺尾定北方供人辨方向,第33页,而今称罗盘美名定罗经远航引方向定向免误程,火药、印刷、三创造罗盘位其中科技兴北斗华夏寐太空！,第34页,课后习题参考答案,朗诵课文。说说课文里写了哪几个“天然指南针”，它们是怎样帮助人们区分方向。,朗诵指导：,本文采取诗歌形式，向我们介绍了在野外准确判断方向方法，朗诵时速度稍慢，注意停顿。,第35页,参考答案：,本文讲述了四种“天然指南针”：,1.,太阳；,2.,北极星；,3.,大树；,4.,积雪。,中午时候太阳在南边，地上树影指向北方；北极永远高挂在北方；树叶稠一面是南方，枝叶稀一面是北方；在沟渠里，雪化得快一面是南方，雪化得慢一面是北方。,第36页,读一读，记一记。,慌张 分辨 忠实 向导 永远,惊慌 区分 忠诚 导游 永久,chn,老师指导：,这些词语是本课生词一字组多词，同学们能够采取各种形式读，识记并积累词语，还能够学习各种方法给课文其它生字组词。,第37页,选做：生活中还有哪些区分方向方法？能够请教周围人。,参考答案：,在北半球，能够：,(1),观察竹子颜色，竹身为青绿色一面朝南，竹身为青黄色一面朝北。,(2),观察树木年轮，年轮较稀疏一边是南方，年轮较密集一边是北方。,第38页,1.,熟读课文。,2.,假如你在野外迷了路，你会怎么办呢？你还知道哪些区分方向方法吗？,课后作业,第39页,第40页,