Describes several exemplars of software that emulate and incorporate machine-supported aspects of cognitive apprenticeships in science and mathematics. Concludes with an evaluation of software against cognitively guided principles and with a summary of the difficulties associated with creating and implementing machine-supported apprenticeships.…

Presents an approach for the improvement of teacher performance through in-service programs related to computer science education. Identifies what teachers need to know about computers and offers a model for the planning, development, implementation, and evaluation of in-service programs for teacher computer literacy. (ML)