The Adaptive Tutoring System RATH a Prototype

Adaptive tutoring systems (ATS) adapt to the student’s knowledge in the domain taught. This means, that lessons, examples, or test and training problems are presented to students only if they know all prerequisites for understanding the material. A theoretical framework for such individual selection of material exists in the theory of knowledge spaces (Doignon and Falmagne, 1985, 1998; Albert, 1994; Albert and Lukas, 1999). So far, there exist two tutoring systems based on knowledge space theory. ALEKS 1 (Doignon and Falmagne, 1998) is a web– based system applying knowledge space theory developed especially for K12 mathematics. AdAsTra (Dowling et al., 1996) is a general purpose system for testing and training which, however, does not offer web access and does not include a possibility for teaching lessons. TheRATH2 system (Hockemeyer, 1997; Hockemeyer et al., 1998) was developed in order to obtain a web–based, domain–independent ATS built on knowlede space theory.

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