Hm, does "constructionism" mean a new thing in educational theory now? You don't seem to be using it like this:
https://en.wikipedia.org/wiki/Constructionism_(learning_theo...
?
https://en.wikipedia.org/wiki/Constructionism_(learning_theo...
?
A lot of current approaches prioritize scalability over everything else, leading to canned and sandboxed curricula.
I'm curious, though, whether this is in tension with your understanding of constructionism.