ERIC Number: ED079980
Record Type: Non-Journal
Publication Date: 1973-Jun-25
Reference Count: N/A
Self-Optimizing Computer-Assisted Tutoring: Theory and Practice. Technical Report Number 206.
Kimball, Ralph B.
Research constructed a computer-assisted instruction (CAI) tutor which could transmit problem solving heuristics, choose examples, handle examples from a range of students, and learn superior student heuristics. Using a student subject model and tutorial strategy, an experiment was conducted with 284 problems. Subject response data indicated the information updating and student learning models could be considered separately since response discontinuities were related to instances of entering failure states. Students made 0.101 fewer additional steps per problem worked than the tutor and 0.011 fewer failures per problem step. Students improved 25% of the solutions and the tutor acquired some novel solutions. The research clarified the definition of a tutor in CAI, established a methodology for problem solving heuristics, defined and supported a model of how student heuristics change after failure, implemented a scheme for tutor improvement, and combined the results of research in symbolic integration and algebraic simplification for use in CAI. Future research should investigate the role of failure in strategy changes, convergence in problem solving, quantitative measures in CAI tutoring, and tutors for other subjects. (LB)
Publication Type: N/A
Education Level: N/A
Sponsor: National Science Foundation, Washington, DC.
Authoring Institution: Stanford Univ., CA. Inst. for Mathematical Studies in Social Science.