Destroying predatory industries: a lovely side-effect of helping students. (Next up: destroying the system itself…)
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The results of @khanacademy's new SAT prep: prnewswire.com/news-releases/ 19% reduction in ALL paid prep!!
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honest question from someone who deeply respects your tech and ed work: what sustains the khan system, grants and donations?
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(great talk at ReactConf a few weeks ago, and you've share great links and thoughts on 'problem-solution ordering' for math)
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