"Strictly models and objects first": Unterrichtskonzept und -methodik für objektorientierte Modellierung im Informatikunterricht

Object oriented modeling (OOM) is a widely discussed topic in computer science education accepted and supported by researchers and marked as too sophisticated and burdened with overhead by teachers. In this dissertation as a bridge between these two points of view I present a concept for teaching OOM that uses the granted learning theoretical bene ts of OOM and avoids most of the reported di culties. Starting from existing concepts for OOM in school and their criticism I acquired four guiding ideas to avoid the di culties: models rst, strictly objects rst, comprehensibility and executability. Following these ideas very strictly I developed tuitional techniques using learning theory, general education theory, later results of research in computer science education and software engineering for signi cant parts of a course in OOM. This proceeding led to a teaching concept which considers the focus on modelling from the very beginning. Since the representation of the models remains on the graphical level to a large extent many problems of a programming course could be avoided and, as a result of the modelling, executable programs could be developed nevertheless. This work is structured as follows: After a discussion of existing concepts for OOM I present my concept beginning with the mentioned guiding ideas. Then with regards to tools and examples the tuitional techniques are developed for signi cant parts of a course in OOM. Afterwards their implementation in class and my experiences are described in detail. I close with a conclusion and prospects of future work.