Abstract
This paper presents a case-based tutor, CECELIA 1.1, that is based on techniques from CELIA, a computer model of case-based apprenticeship learning [Redmond 1992]. The teaching techniques include: interactive, step by step presentation of case solution steps, student predictions of an expert's actions, presentation of the expert's steps, student explanations of the expert's actions, and presentation of the expert's explanation. In addition, CECELIA takes advantage of a technique from VanLehn's [1987] SIERRA — presenting examples in an order so that solutions only differ by one branch, or disjunct, from previously presented examples. CECELIA relies on its teaching strategy encouraging greater processing of the examples by the student, rather than on embedding great amounts of intelligence in the tutor. CECELIA is implemented using HyperCard on an Apple Macintosh, and has been pilot tested with real students. The tests suggest that the approach can be helpful, but also suggest that eliciting self-explanations from students who normally do not self-explain may be challenging.
This research follows from work on CELIA which was supported by the Army Research Institute for the Behavioral and Social Sciences under Contract No. MDA-903-86-C-173, and Contract No. MDA-903-90-K-0112 and by DARPA contract F49620-88-C-0058 monitored by AFOSR. Work on CECELIA was partially supported by Rutgers University and Holy Family College. Thanks to Janet Kolodner for her advice and guidance concerning CELIA, and to Justin Peterson and Joel Martin for helpful discussion. Colleen Griffin did some of the development of the initial version of CECELIA.
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Redmond, M., Phillips, S. (1997). Encouraging self-explanation through case-based tutoring: A case study. In: Leake, D.B., Plaza, E. (eds) Case-Based Reasoning Research and Development. ICCBR 1997. Lecture Notes in Computer Science, vol 1266. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-63233-6_486
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