Khan Academy: Friend or Foe?
A Principal's Reflections
APRIL 23, 2012
To date, these statistics are: 140 million+ lessons delivered, 500 million+ exercises done, and 6+ million unique visits per month. As Sal emphasized, his key finding during this exploratory process was that viewers could engage in the content when they were ready for, or needed, it and could learn at their own pace.
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