Would it be possible to have a translation in English of what is written in each bubble?
Just looking at The Bubble Diagram one sees a clearer perspective being presented not only on how "The Silent Way" progresses, but also the path the teacher may follow when teaching students a foreign language.
I think we all do something intuitively similar to "The Bubble Diagram" but have never mapped it out so clearly.
Utilizing the diagram the teacher could easily color in the progress being made by the class or by individual students.
Students could be screened to see where they presently are and how far or little they have to go to reach their goal, or the school goals.
This would also be of interest to administrators of schools as they are more interested in graphics, and charts.
Nice job, hope to receive more info.
Luigi