If KhanAcademy were merely about those online lectures, of course, it would be in good butlarge company. Increasingly, teachers, professors and other experts make their talks availableonline: on iTunes, YouTube or university websites. Some, such as Michael Sandel at Harvardwith his philosophy lectures, have become minor celebrities. More and more sites exist purelyto spread learningsome free, such as AcademicEarth.org; others not, such asTheGreatCourses.com.
当然,若是Khan学院只仅仅提供网络课程,那它就有一大帮的同行了。越来越多的老师教授和其他专家都在iTunes、YouTube或是大学网站上上传了他们的讲说。一些人已经小有名气,比如哈佛大学的MichaelSandel教授。那些专为传道授业的网站也与日俱增,有的是免费的,比如AcademicEarth.org网站,有的则是收费的,比如TheGreatCourses.com网站。
Watching lectures online, or on a smartphone or iPad on the go, has advantages, as Mr Khanhas discovered from the huge number of comments he gets on his site. Children need no longer feel ashamed when they have to review part or all of a lectureseveral times. So they can advance at their own pace.
在Khan先生浏览他的网站时,上面的诸多评论让他发现,上网、用智能手机或是用iPad聆听教学课程会有很多优势。孩子们用不着因为要多看几遍课程视频而感到没有面子。因此,他们可以按照自己的节奏来安排学习。
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