A Constraint-Based Collaborative Environment for Learning UML Class Diagrams

COLLECT-UML is a constraint-based ITS that teaches object-oriented design using Unified Modelling Language (UML). UMLis easily the most popular object-oriented modelling technology in current practice. We started by developing a single-user ITS that supported students in learning UML class diagrams. The system was evaluated in a real classroom, and the results show that students' performance increased significantly. In this paper, we present our experiences in extending the system to provide support for collaboration. We present the architecture, interface and support for collaboration in the new, multi-user system. A full evaluation study has been planned, the goal of which is to evaluate the effect of using the system on students' learning and collaboration.

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