Last summer I gave a short talk at the Academy of Inquiry-Based Learning conference in Denver. At the time I promised Michael Pershan I’d write it up. I never did, but it was recorded. The video (~20 min) is below, and here’s the handout.
By the way, neither in the talk nor in the handout did I ever credit Tony King, the instructor of a class I took on teaching ELL’s. I stole the premise of Problem 1 from him.