There was an interesting group of questions at this presentations. I particularly liked the ideas of helping students to "fail" and making that a socially safe thing, especially for cultures in which failure can bring great shame. Perhaps framing "failure" like this in more scientific setting could be useful? Mathematicians often "fail" frequently as they explore and research an area--more pedagogy could follow this sort of area, especially in teaching early math as an exploration rather than rote memorization.