Adaptable scaffolding – a fuzzy approach

Authors:
Selvarajah Mohanarajah;Ray Kemp;Elizabeth Kemp
Affiliations:
Institute of Information Sciences and Technology, Massey University, New Zealand;Institute of Information Sciences and Technology, Massey University, New Zealand;Institute of Information Sciences and Technology, Massey University, New Zealand
Venue:
ITS'06 Proceedings of the 8th international conference on Intelligent Tutoring Systems
Year:
2006

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Abstract

Employing scaffolding is not new in education. In CBL systems, scaffolding has been used with different levels of adaptability. This paper describes a novel design for the Learner Model, which handles the effects of uncertainty formally in the Scaffolding process. We have used this design in our CBL system (LOZ) for learning Object-Z specification. Learners can easily modify the scaffolding process if they wish. They can inspect the underlying fuzzy model and its processes. We use the fuzzy logic theory for dynamic prediction. A time threshold is used to avoid unnecessary dynamic prediction. The proposed design is domain independent and may be used for a wide range of CBL systems with little modification. We conducted an evaluation based on pre-experimental design and the results were very encouraging.