英语演讲 TED Salman Khan Lets use video to reinvent education教程.pdf,Salman Khan: Lets use video to reinvent education The Khan Academy is most known for its collection of videos, so before I go any further, let me show you a little bit of a montage. (V
Get ready for Geometry Get ready for Algebra 2 Get ready for Precalculus Get ready for AP® Calculus Get ready for AP® Statistics Reading & language arts Up to 2nd grade (Khan Kids) 2nd grade 3rd grade 4th grade 5th grade 6th grade reading and vocab ...
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