部编二年级语文下册17要是你在野外迷了路ppt课件.ppt

《部编二年级语文下册17要是你在野外迷了路ppt课件.ppt》由会员分享，可在线阅读，更多相关《部编二年级语文下册17要是你在野外迷了路ppt课件.ppt（47页珍藏版）》请在三一办公上搜索。

1、没有地图我们又该怎么办呢？,17 要是你在野外迷了路,bin,辨,实,我会认,忠,chung,x,png,j,闯,碰,永,稠,稀,zhng,do,yng,hung,慌,盏,导,zhn,渠,q,sh,积,chu,摘星星,慌,辨,导,实,盏,永,闯,忠,碰,稠,稀,渠,积,慌 张 帮 助 辨 别 忠 实 向 导一 盏 永 远 乱 闯 碰 上 稠 密稀 疏 特 别 沟 渠 积 雪 指 针,慌 张 帮 助 辨 别 忠 实 向 导一 盏 永 远 乱 闯 碰 上 稠 密稀 疏 特 别 沟 渠 积 雪 指 针,bin,sh,do,chun,x,t,j,hun,bn,zh,zhn,yn,chu,q,zh zh

2、n,整体感知,本文以诗歌的形式讲述了在野外迷路后辨别方向的 方法。,四种,太阳,北极星,大树,积雪,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

3、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

4、路,状元成才路,状元成才路,状元成才路,状元成才路,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。大自然有很多天然的指南针，会帮助你辨别方向。,课文解读,指南针：一种判别方位的简单仪器。指南针的前身是中国古代四大发明之一的司南。主要组成部分是一根装在轴上可以自由转动的磁针，磁针在地磁场作用下能保持在磁子午线的切线方向上，磁针的北极指向地理的北极，利用这一性能可以辨别方向。常用于航海、大地测量、旅行及军事等方面。,知识备查,古代的司南,指南针,大自然中的“天然的指南针”是怎样帮助人们辨别方向的呢？轻声读课文第2-5小节，然后在小组里讨论。,状元成才路,状元成才

5、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

6、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,太阳是个忠实的向导，

7、它在天空给你指点方向。,忠实,向导,请同学们结合生活实际说一说太阳是如何给我们指点方向的？,清晨,傍晚,东,西,太阳是个忠实的向导,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,

8、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,

9、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,中午的时候它在南边，,地上的树影正指着北方。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状

10、元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状

11、元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,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，就不会在黑夜里乱闯。,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如何利用北极星识别方向。,天上星星那么多，哪颗是北极星呢？,先看北斗七星，把北斗七星勺边上的两颗小星连起来，从勺口方向延伸至两颗小星距离约5倍处，那颗最闪亮的星就是北极星。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

12、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

13、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,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。枝叶稠的一面是南方，枝叶稀的一面是北方。,“大树”能给人帮忙，把树当成人来写，运用了

14、拟人的修辞手法。,大树也会来帮忙,思考：树叶的稀稠和阳光有什么关系？,树的枝叶稀稠和太阳光照射时间长短及照射量多少有关。树冠的南面受太阳光照射多，树叶茂密；北面由于受遮挡，光照较少，树叶长得稀。,稠 稀南 北,雪特别怕太阳，沟渠里的积雪会给你指点方向。看看哪边雪化得快，哪边化得慢，就可以分辨北方和南方。,思考：怎样用沟渠里的积雪来分辨南北方向？,冬天，太阳从南边射过来，沟渠里的积雪朝南的一面受照射的时间长，化得快，积雪朝北的一面，太阳照射不到，雪化得慢。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

15、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才

16、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,通过学习，你知道了哪几种野外辨别方向的方法？,四种,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

17、北方。,枝叶稠的那边是南方，稀的那边是北方。,朝南的一面化得快，朝北的一面化得慢。,要是你在野外迷了路，可千万别慌张。大自然有很多天然的指南针，需要你细细观察，多多去想。,告诉了我们找到天然的指南针的方法：细细观察，多多去想。,思考：你还知道哪些辨别方向的方法？,年轮密集的是北方，年轮稀疏的是南方。,岩石上有青苔的一面是北侧，另一面为南侧。,观察蚂蚁的洞穴，洞口大都是朝南的。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元

18、成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元

19、成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,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）,中午：太阳（南） 树影（北）,雪后：沟渠里的积雪,化得快（朝南）化得慢（朝北）,要是你在野外迷了路,结构梳理,课堂小结,这首诗歌介绍了在野外迷路后辨别方向的四种方法，

20、告诉我们要留心观察周围的事物，发现大自然的奥秘。,查理和罗拉：万一我在不知名的地方迷路怎么办,拓展延伸,指,zh,组词： 指南针 手指,造句：在森林中没有指南针很容易迷失方向。,针,zhn,组词：指南针 时针,造句：野外旅行一定要带好指南针。,帮,bng,组词：帮助 帮忙,造句：同学之间要互相帮助。,助,zh,组词：帮助 助力,造句：同学之间要互相帮助。,导,do,组词：向导 引导,造句：到山里去旅行需要有向导陪伴。,永,yng,组词：永远 永生,造句：我和小明永远是朋友。,碰,png,组词：碰见 碰头,造句：我昨天碰上我们老师在买菜。,特,t,组词：特别 特殊,造句：今天早上我特别开心。,积

21、,j,组词：积雪 积累,造句：山顶上有常年不化的积雪。,要,中,多音字,zh,zhn,bng,zh,do,yng,png,t,j,手指,指针,帮忙,帮助,向导,永远,碰见,特别,积雪,Z,扌,Z,钅,B,巾,Z,力,D,寸,Y,水,P,石,T,牜,J,禾,1.读拼音，写汉字。,bin bi lun chun （ ） （ ） j xu x yo （ ） （ ）,辨别,乱闯,积雪,需要,随堂练习,2.读读写写。特别 分别 别处 _指挥 手指 指南针 _方向 地方 千方百计 _,别人 区别,指引 食指,方便 方法,3.知识拓展。,而今称罗盘美名定罗经远航引方向定向免误程,火药、印刷、三发明罗盘位其中

22、科技兴北斗华夏寐太空！,课后习题参考答案,朗读课文。说说课文里写了哪几种“天然的指南针”，它们是怎样帮助人们辨别方向的。,朗读指导： 本文采用诗歌的形式，向我们介绍了在野外准确判断方向的办法，朗读时速度稍慢，注意停顿。,参考答案： 本文讲述了四种“天然的指南针”： 1.太阳；2.北极星；3.大树；4.积雪。 中午的时候太阳在南边，地上的树影指向北方；北极永远高挂在北方；树叶稠的一面是南方，枝叶稀的一面是北方；在沟渠里，雪化得快的一面是南方，雪化得慢的一面是北方。,读一读，记一记。,慌张 分辨 忠实 向导 永远惊慌 辨别 忠诚 导游 永久,chn,老师指导： 这些词语是本课生词的一字组多词，同学们可以采用多种形式的读，识记并积累词语，还可以学习各种方法给课文其他生字组词。,选做：生活中还有哪些辨别方向的办法？可以请教周围的人。,参考答案： 在北半球，可以： (1)观察竹子的颜色，竹身为青绿色的一面朝南，竹身为青黄色的一面朝北。 (2)观察树木的年轮，年轮较稀疏的一边是南方，年轮较密集的一边是北方。,