打开App
360P
趣味数学平均数问题：某人走后一半路程用了多少分钟呢？代数计算
本节的内容主要讲述的是小学趣味数学（多为思维训练的题目），可以尝试让孩子做一做，很有挑战意义；本节涉及的是平均数问题③：某人走后一半路程用了多少分钟
小学趣味数学：奥数精炼，让孩子打开思维，爱上数学学习264/373
App02:36
App03:00
App02:01
App02:16
App04:34
App02:36
App01:36
App02:32
App02:52
App02:15
App03:22
App03:55
App03:10
App03:48
App02:35
App03:20
App03:06
App02:51
App03:46
App10:48
App03:29
App03:40
App02:12
App03:45
App04:53
App03:18
App02:30
App03:20
App03:24
App05:36
App03:53打开App观看
