1、 课课 文文 小壁虎小壁虎我是认字小能手我是认字小能手壁壁墙墙您您 咬咬断断拨拨蚊蚊赶赶甩甩bqingyowndunnnbshuign我是写字小能手我是写字小能手房房爬爬 您您条条姐姐捉捉草草f ngzhutiopjiconn 猜一猜猜一猜叫虎不是虎，生来有四足。爱在墙角住，专吃蚊蝇虫。（打一动物）1 1、小壁虎为什么去借尾巴？、小壁虎为什么去借尾巴？课文讲解课文讲解 小壁虎在墙角捉蚊子，一条蛇咬住了小壁虎在墙角捉蚊子，一条蛇咬住了他的尾巴。小壁虎一挣，挣断尾巴逃走了。他的尾巴。小壁虎一挣，挣断尾巴逃走了。没有尾巴多难没有尾巴多难看啊，向谁去借一看啊，向谁去借一条尾巴呢？条尾巴呢？因为因为 ，
2、他，他觉得觉得，所所以以。小壁虎的尾巴断了小壁虎的尾巴断了没有尾巴很难看没有尾巴很难看他想去借一条尾巴他想去借一条尾巴2 2、小壁虎都向谁借尾巴了？、小壁虎都向谁借尾巴了？小鱼小鱼老牛老牛燕子燕子3 3、小壁虎爬到哪见到它们的？、小壁虎爬到哪见到它们的？（小河边）（小河边）（大树上）（大树上）（房檐下）（房檐下）小鱼姐姐，您把小鱼姐姐，您把尾巴借给我行吗？尾巴借给我行吗？不行啊，我要不行啊，我要用尾巴用尾巴拨水拨水呢。呢。牛伯伯，您牛伯伯，您把尾巴借给把尾巴借给我行吗？我行吗？不行啊，我不行啊，我要用尾巴要用尾巴赶赶蝇子蝇子呢。呢。燕子阿姨，燕子阿姨，您把尾巴借您把尾巴借给我行吗？给我行吗？不
3、行啊，不行啊，我要用我要用尾巴尾巴掌掌握方向握方向呢。呢。4、小壁虎为什么没有借到尾巴呢？、小壁虎为什么没有借到尾巴呢？因为：因为：（）用尾巴（）用尾巴（）。）。（）用尾巴（）用尾巴（）。）。（）用尾巴（）用尾巴（）。）。小鱼小鱼老牛老牛燕子燕子拨拨 水水赶赶 蝇蝇 子子掌握方向掌握方向5 5、没有借到尾巴的小壁虎的、没有借到尾巴的小壁虎的心情怎么样？心情怎么样？6 6、长出新尾巴的小壁虎的心情、长出新尾巴的小壁虎的心情又是怎样的？又是怎样的？（难过）（难过）（高兴）（高兴）小鱼小鱼()()着尾巴着尾巴()()。老黄牛老黄牛()()着尾巴着尾巴()()。燕子燕子()()着尾巴着尾巴(）。）。摇
4、摇拨水拨水甩甩赶蝇子赶蝇子摆摆掌握方向掌握方向挣断挣断保护自己保护自己小壁虎小壁虎()尾巴尾巴()()。动物的尾巴各有各的用处动物的尾巴各有各的用处更多精彩课件、教案、反思、公开课、试卷内容，敬请关注更多精彩课件、教案、反思、公开课、试卷内容，敬请关注 微信公众号：微信公众号：“部编版小学语文资料库部编版小学语文资料库”和和“部编版小学部编版小学数学资料库数学资料库”扫描二维码扫描二维码关注下载关注下载感谢您的使用！感谢您的使用！曹 冲 称 象一一杆秤杆秤gn chng gn 笔杆笔杆 枪杆枪杆 gn 旗杆旗杆 栏杆栏杆杆杆称称称称：测定重量：测定重量秤秤：测定物体重量的器具：测定物体重量的器
5、具 称象称象谁称象谁称象?为什么要称象为什么要称象?这头大象长得怎么样？这头大象长得怎么样？用什么办法称象？用什么办法称象？结果怎么样？结果怎么样？PPT模板： PPT课件： 1、读一读、读一读 读读课文第四自然段读读课文第四自然段2 2、划一划、划一划 用波浪线划出曹冲称象的办法用波浪线划出曹冲称象的办法3 3、说一说、说一说 用用“先先然后然后再再最后最后”等词等词 说说曹冲想出的办法说说曹冲想出的办法4 4、想一想、想一想 和官员们的办法比，谁的办法更和官员们的办法比，谁的办法更 好？为什么？好？为什么？曹操的儿子曹冲才七岁，他站出来，说：曹操的儿子曹冲才七岁，他站出来，说：“我有个办法
6、。我有个办法。把大象赶到把大象赶到一艘大船上，看船身下沉多少，就沿着水面，在船一艘大船上，看船身下沉多少，就沿着水面，在船舷舷上画一条线。再把大象上画一条线。再把大象赶上岸，往船上装石头。装到船下沉到画线的地方为止，然后称一称船上的赶上岸，往船上装石头。装到船下沉到画线的地方为止，然后称一称船上的石头。石头。石头有多重，大象就有多重。石头有多重，大象就有多重。”曹冲想出了什么样的称象办法？曹冲想出了什么样的称象办法？赶象上船赶象上船船沉画线船沉画线装石到线装石到线称石累加称石累加 他叫人照曹冲说的方法去做，果然他叫人照曹冲说的方法去做，果然称出了大象的重量。称出了大象的重量。曹冲是怎样想出称象
7、的办法的？1 1、曹冲听了官员们议论造大秤的办法，想到了什么？曹冲听了官员们议论造大秤的办法，想到了什么？曹冲想：造大秤可不容易，不如用船来代替大秤，曹冲想：造大秤可不容易，不如用船来代替大秤，因为船能装很重很重的东西；即使造了大秤，也没有人因为船能装很重很重的东西；即使造了大秤，也没有人能提得起来，那就用水的浮力代替人的力气。能提得起来，那就用水的浮力代替人的力气。读读官员们提出的称象的方法，联系曹冲的办法，说说他的办法妙读读官员们提出的称象的方法，联系曹冲的办法，说说他的办法妙就妙在哪里？就妙在哪里？曹冲用心听别人的议论，积极动脑筋想办法。曹冲用心听别人的议论，积极动脑筋想办法。曹冲善于观
8、察和学习，知识丰富，知道船在水里下沉的曹冲善于观察和学习，知识丰富，知道船在水里下沉的程度与重量有关系。具有丰富的知识，肯动脑筋思考问题，程度与重量有关系。具有丰富的知识，肯动脑筋思考问题，就会变得聪明起来。就会变得聪明起来。你向曹冲学习什么？官员官员 柱子柱子 宰割宰割船舷船舷 果然果然 议论议论一杆秤一杆秤 一杆枪一杆枪读生字，分析字形组词语 称（称（）船（船（）柱（柱（）杆（杆（）秤（秤（）舷（舷（）住（住（）竿（竿（）作作 业业1、完成课后练习，会用、完成课后练习，会用“才才”“”“一边一边一边一边”造句。造句。2、把曹冲称象的故事讲给别人听。、把曹冲称象的故事讲给别人听。What w
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