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1、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,3.长方体和正方体的体积,第 1 课时体积和体积单位,R五年级下册,引入新课,点击画面播放视频,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,
2、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,探究新知,水面为什么会上升呢？,我知道，因为石子占有一定的空间，所以水面上升了。,取两个同样大小的玻璃杯，先往一个杯子里倒满水，,实验观察,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元
3、成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,取一块鹅卵石放入另一块杯子，再把第一个杯子里的水倒进第二个杯子里，会出现什么现象？为什么？,第2个杯子装不下这些水，因为石头占有一定的空间。,如果我们在第二个杯子中放入大小不同的石头，又会有什么不同呢？你又有什么发现？,我发现水面上升的高度不同，说明石头大小不同，他们占的空间也不同。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成
4、才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,下面的洗衣机、影碟机和手机，哪个所占空间大？,想一想,物体所占空间的大小叫做物体的体积。 上面三个物体，哪个体积最大？哪个体积最小？,洗衣机的体积最大，手机的体积最小。,那么，怎样比较下面两个长方体体积的大小呢?,也要用统一的体积单位来测量吧?,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,
5、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,体积单位的认识,长度单位,面积单位,体积单位,厘米分米米,平方厘米平方分米平方米,立方厘米立方分米立方米,计量体积要用体积单位，常用的体积单位有立方厘米、立方分米和立方米，可以分别写成cm3、dm3和m3。,(1)棱长是1cm的正方体，体积是1cm3。,一个手指尖的体积大约是1cm3。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,
6、状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,(2)棱长是1dm的正方体，体积是1dm3。,粉笔盒的体积接近于1dm3。,用3根1m长的木条做成一个互成直角的架子，放在墙角，看看1m3的体积有多大。,(3)棱长是1m的正方体，体积是1m3。,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才
7、路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,1. 说一说1cm、1cm2、1cm3分别是用来计量什么量的单位，它们有什么不同?,长度单位,面积单位,体积单位,2. 下面的图形是用棱长1cm的小正方体拼成的，说出 它们的体积各是多少。,9cm3,8cm3,6cm3,4cm3,1.填空。 （1）（ ）叫做物体的体积。 （2）计量体积要用（ ）单位，常用的体积单位有（ ）、（ ）、（ ），用字母表示可以写成（ ）、（ ）、（ ）。,物体所占空间的大小,体积,立方米,立方分米
8、,立方厘米,m3,cm3,dm3,达标检测,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,（3）棱长是（ ）的正方体，体积是1m3；棱长是（ ）的正方体，体积是1dm3；棱长是1cm的（ ），体积是1cm3。,1m,1dm,正方体,2.在横线上填上适当的单位名称。一个操场的面积约130
9、0_。一本新华字典的体积约1_。小明身高约124_。数学书封面的面积约3_。牙膏盒的体积约120_。一根跳绳约长2_。,m2,dm3,cm,dm2,cm3,m,3.一杯水中有一块石头，将石头取出，水面会（ ）。 A.上升B.下降C.不变,B,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,1. 课本练习七，第3题、第4题、第5题；2. 完成练习册本课时的习题。,课后作业,声 明本文件仅用于个人学习、研究或欣赏，以及其他非商业性或非盈利性用途，但同时应遵守著作权法及其他相关法律的规定，不得侵犯本司及相关权利人的合法权利。除此以外，将本文件任何内容用于其他用途时，应获得授权，如发现未经授权用于商业或盈利用途将追加侵权者的法律责任。武汉天成贵龙文化传播有限公司湖北山河律师事务所,