Although I am not completely enamored of the final proposed model, which I think oversimplifies the very issues their analysis distinguishes, I do find this article useful in giving names to a number of factors we have found ourselves discussing: e.g., learner-interface interaction, transaction v. interaction, interaction v. interactivity, provocateur v. academician. Useful for our ongoing conversation.
Thanks Susan, I found these short and informal essays very helpful. I keep circling around this material feeling as if I cannot quite pinpoint why, even though I agree in essence with much that is said, I am resistant to the terminology and sense that this is a new revelation in educational theory rather than an articulation of what many educators have wanted to achieve for a long time.