二上数学《4和5的乘法口诀》视频精讲

4的乘法口诀 名师视频精讲https://v.qq.com/txp/iframe/player.html?vid=b0381tvl8n1&width=500&height=375&auto=0

5的乘法口诀 名师视频精讲1https://v.qq.com/txp/iframe/player.html?vid=r05082fg0b9&width=500&height=375&auto=0

5的乘法口诀 名师视频精讲2https://v.qq.com/txp/iframe/player.html?vid=x0381wlfk12&width=500&height=375&auto=0点击左下阅读原文下载全册视频课件