几个星期前，我请这个博客的读者给我寄来一些关于自我指导学习数学的故事。
Several weeks ago I invited readers of this blog to send me stories about the self-directed learning of math.
一个组织收集的信息显示，在巴基斯坦，五年级有一半的儿童不懂基础数学，也不会用他们的语言阅读故事。
Information gathered by an organization shows half of all Pakistani children in the 5th grade do not understand basic mathematics and cannot read a story in their language.
在（纪录片）开头，袁的三个孙女回忆了她们祖父的故事，并提到祖父最关心的是她们的英语和数学学习。
In the opening parts, Yuan's three granddaughters recalled stories about their grandfather and said that he mostly cared about their English and math studies.
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