教育专题：北师大版数学六年级上册《图形的变换（1）》课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,图形的变换,北师大版六年级数学上册,教学目标,1.,通过操作活动，体验图形的变换过程，能判断一个简单图形在方格纸上沿水平方向、竖直方向平移、旋转后的图形。,2.,通过方格纸上的操作活动，能说出图形的平移或旋转的变换过程。,A,D,C,B,思考,:,1,.,向什么方向平移？,2,.,平移了几个单元格？,P,Q,O,P,O,Q,A,D,C,B,思考,:,1,.,向什么方向平移？,2,.,平移了几个单元格？,O,O,Q,P,P,Q,D,C,B,思考,:,1,.,向什么方向平移？,2,.,平移了几个单元格？,P,Q,O,P,O,Q,B,C,D,A,观察下图提示：,1.,是围绕着哪个点旋转的？,2.,向哪个方向旋转的？,3.,旋转的幅度怎样？怎样来描述？,A,C,B,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,C,A,B,C,A,B,B,A,C,A,B,B,A,C,A,B,B,A,C,A,B,B,A,三角形绕点时针旋转度,逆,90,(1),(2),(3),(4),A,B,C,D,A,B,C,D,A,B,C,D,A,B,C,D,2,5,6,7,4,3,1,2,5,6,7,4,3,1,试一试,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,2,5,6,7,4,3,1,1,2,3,4,5,6,7,1.,图、不动。,.,图绕直角顶点逆时针方向旋转度，再向上平移格，最后向右平移格；,.,图先向下平移格，再向左平移格；,.,图、图,4,、图,3,都向右平移格。,1,2,3,4,5,6,7,你做对了吗？,答案,