Answer to "Is it possible to have only one PBL module in a curriculum?"
This question is linked to the previous one. Technically, it is possible (and happens) but this was not the original intention of PBL. PBL was envisaged as a whole curriculum approach, not a teaching method. A single module of PBL might be appropriate as a pilot prior to the adoption of a whole curriculum approach. This pilot module might serve as an orientation to PBL for the learners and faculty and assists in the identification of potential issues prior to PBL implementation.
BARROW, H.S., and TAMBLYN, R.M. (1980). Problem-based Learning: An Approach to Learning. (New York: Springer).
KWAN, C-Y, and TAM, L. (2009). Commentary: hybrid PBL – what is in a name? (J Med Educ. 13:76-83).