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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Teachers and Students in Charge
Using Annotated Model Solutions in a Functional Programming Tutor
verfasst von : Alex Gerdes, Bastiaan Heeren, Johan Jeuring
Erschienen in: 21st Century Learning for 21st Century Skills
Verlag: Springer Berlin Heidelberg
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We are developing
Ask-Elle
, a programming tutor that supports students practising functional programming exercises in Haskell.
Ask-Elle
supports the stepwise construction of a program, can give hints and worked-out solutions at any time, and can check whether or not a student is developing a program similar to one of the model solutions for a problem. An important goal of
Ask-Elle
is to allow as much flexibility as possible for both teachers and students. A teacher can specify her own exercises by giving a set of model solutions for a problem. Based on these model solutions our tutor generates feedback. A teacher can adapt feedback by annotating model solutions. A student may use her own names for functions and variables, and may use different, but equivalent, language constructs. This paper shows how we track intermediate student steps in
Ask-Elle
and how we avoid the state space explosion we get when analysing intermediate, incomplete, student answers.