1. Anderson, J. R., Boyle, C. F., Farrell, R. & Reiser, B. J. (1984). Cognitive principles in the design of computer tutors. Unpublished manuscript, Advanced Computer Tutoring Project, Carnegie-Mellon University, Pittsburgh.
2. Some Reflections on the Acquisition of Knowledge
3. Atwood, M. E. & Ramsey, H. R. (1978). Cognitive structures in the comprehension and memory of computer programs: An investigation of computer debugging (Tech. Rep. TR-78-A210). Alexandria, VA: U S . Army Research Institute for the Behavioral and Social Sciences.
4. Becker, H. J. (1983). School uses ofmirocomputers. Baltimore r MD: Johns Hopkins University, Center for Social Organization of Schools.
5. Becker, H. J. (1984, April). The classroom context of microcomputers: How different schools manage the problems. Paper presented at the annual meeting of the American Educational Research Association, New Orleans.