二数下3 图形的运动（一）旋转

https://v.qq.com/txp/iframe/player.html?vid=i0192mtdmuu&width=500&height=375&auto=0

https://v.qq.com/txp/iframe/player.html?vid=m0504tvcl8t&width=500&height=375&auto=0

复制网址 www.1ydt.com 打开下载完整全册word试卷教案及PPT课件点击阅读原文看全部教学内容

https://v.qq.com/txp/iframe/player.html?vid=d0506ye8iel&width=500&height=375&auto=0