There I found an animation that explained the proper methods and terminology; my son and I watched the subtraction segment over and over until he (and I!) finally understood the process.

我终于找到了一本动画版的教程，所采用的方法相得益彰；我和孩子通过对减法分段部分一遍一遍地演示，(我！)和他也终于把这整个过程给搞明白了。

youdao

There I found an animation that explained the proper methods and terminology; my son and I watched the subtraction segment over and over until he (and I!) finally understood the process.

我终于找到了一本动画版的教程，所采用的方法相得益彰；我和孩子通过对减法分段部分一遍一遍地演示，(我！)和他也终于把这整个过程给搞明白了。

youdao