Cognitive apprenticeship is a pedagogical model developed within the situated learning paradigm. The model is inspired by the apprentice-master model of traditional crafts but it is adapted to "cognitive" or intellectual domains. More emphasis is on the importance of realism and authenticity than in, e.g.,  ITSs.

Situated Learning & Situated Cognition: A Brief Summary of WWW-based Resources

Slides from a course on Design Issues for Learning Environments by Collins, Baranek & Newman. Good points about the costs and benefits of various aspects of learning environments.

Slides from a course at Bergen University.