In interactive learning environments based on visual representations the problem of checking the correctness of student solutions is much harder than with linear textual or numerical input. This paper presents a generic approach to providing learner feedback in such environments. The underlying checking mechanism analyzes system states against target constellations defined as sets of constraints about locations or connections of objects. A newly introduced analysis graph allows also the definition of procedural dependencies. An implementation of a feedback mechanism for traffic education in secondary schools is presented as an example.
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
Tel.: +1 703 830 6300
Fax: +1 703 830 2300 email@example.com
(Corporate matters and books only) IOS Press c/o Accucoms US, Inc.
For North America Sales and Customer Service
West Point Commons
Lansdale PA 19446
Tel.: +1 866 855 8967
Fax: +1 215 660 5042 firstname.lastname@example.org