http://www.readwritethink.org/lessons/lesson_view.asp?id=128 - lesson plans, incl. “Choose Your Own Adventure” stories*
http://www.teachnet.com/lesson/langarts/writing/nonlinearwriting.html - classroom exercise
http://saizai.livejournal.com/657391.html - O-kay, then.
*Hrm. I read a lot of those in junior high. And then played a lot of Infocom text-adventure games -- Zork I, in particular. That had a big influence on me -- in college, I was planning on majoring in English, minoring in Computer Science, getting a job as a technical writer, but working on “interactive fiction” in my own time.
Except that I dropped CompSci for music fall of my freshman year. So, whatever.
http://jukkapekkakervinen.blogspot.com/ - Nonlinear poetry (visual poetics)