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I could easily believe the constraint being the tiny number of k-12 teachers who themselves understand math well enough to teach it like this, no matter how sma

I could easily believe the constraint being the tiny number of k-12 teachers who themselves understand math well enough to teach it like this, no matter how small you'd like to make classes.

alex_sf 4y ago
That seems likely. Small groups allow for lots of questions and deeper explanations, which plenty of teachers can't provide.