My looking outwards of someone else’s looking outwards is the Ross Spiral curriculum from week 7 (data visualization).
I agree that the visualization is quite cool and nicely suggests the spiral nature of k-12 education (most of it anyways- in my british elementary school all we spiraled through was the tudors). However I am skeptical about the computational nature of the spiral- i.e., it seems to just be a linear sequence of topics arranged into a spiral, and not reflecting an actual data computation that would reveal the spiral-like nature of data on certain parameters of k-12 curricula.