Just came across this great gem about teaching and collaboration from Howard Rheingold, who blogs a presentation about cultural appropriation:
European cathedral builders in the Americas left blank spaces around the specified iconography of the churches' facades, and encouraged native craftsmen to fill it in with references to their own culture,
I love the pedagogical sense this makes. How we teachers provide content, guide students to content, and how students create content that can fill in gaps. How students will find gaps and create within them, regardless of instructor's desire. A great form of constructivism, this.