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ID:60224058
大小:3.63 MB
页数:28页
时间:2020-12-04
《最新人教版小学数学二年级下册平移和旋转ppt.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、移一移:__________________________________________________点此播放视频__________________________________________________平移旋转__________________________________________________平移和旋转点此播放视频__________________________________________________平移旋转像缆车、红旗等物体沿着一条直线运动的现象叫平移。像大风车、飞机螺旋桨等绕着一个点或一个轴为中心做圆周运动的现象叫做旋转。______
2、____________________________________________向上平移5格向右平移7格向—平移—格向—平移—格下5左6移一移__________________________________________________向()平移()格____________________________________________________________________________________________________1__________________________________________________2__________
3、________________________________________3__________________________________________________4向()平移()格左4__________________________________________________向()平移()格上6__________________________________________________A用铅笔涂出向(下)平移(2)格后的鸭子图B用铅笔画出向(下)平移(2)格后的水草图_________________________________________
4、_________1、哪些物体的运动是平移的,哪些是旋转的说一说:__________________________________________________2、你还见过哪些平移和旋转运动?____________________________________________________________________________________________________1、取一根线,一端拴住一颗纽扣,用手拿着另一端做旋转。2、你还能用这颗纽扣作平移吗?__________________________________________________向下平移
5、格向平移格向平移格(1)移一移,说一说。1下32下__________________________________________________(2)填一填。蜡烛向右平移了格。小鱼向平移了格。45左__________________________________________________(3)画一画向上平移3格向右平移3格__________________________________________________金鱼图向()平移了()格左7__________________________________________________火箭图向()平移了()
6、格上4__________________________________________________小房图向()平移了()格下5__________________________________________________1、物体的运动是平移的画“”,是旋转的画“”。__________________________________________________2、画出房子向左平移3格后的图形。__________________________________________________今天你有什么收获呢?____________________________
7、______________________谢谢!__________________________________________________
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