Wodel-Edu: An MDE Solution for the Generation and Evaluation of Diagram-based Exercises

The creation and correction of exercises are two of the most time-consuming tasks performed by teachers. When done by hand, they are error-prone, too. Several approaches have been devised to automate such tasks. In the case of exercises based on diagrams, we can represent them as models, generate a set of variations – called mutants – and automate the process. In this tool demo paper, we showcase WODEL-EDU, a domain independent framework for the generation and automated grading of diagram-based exercises. This framework offers a family of DSLs enabling the specification and configuration of five different kinds of such exercises, and extensible code generation facilities targeting environments like the MOODLE platform, the web and mobile applications.