Paul Lockhart's only video. Notice how he uses slang in describing the situation with the quadrilaterals...and then elevates it to the essence of mathematics--WHY? His impact on math education has and continues to be profound...https://www.youtube.com/watch?v=V1gT2f3Fe44 …
Alas, Paul himself would strenuously disagree. He wishes it were profound, but is now almost apocalyptic in his pessimism. What keeps him going is constant contact with particular kids, with whom he's able to do things worth doing. But his big-picture view would horrify you.
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That’s a shame to hear but would love to hear more about his views.
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