Web-based algorithm tutorials in different learning scenarios

The combination of scripting languages with web technologies offers many possibilities in teachings. This paper presents a scripting framework that consists of a Java and JavaScript engine and an included editor. It allows editing scripts and source code online, writing new applications, modifying existing applications and starting them from within the editor by a simple mouse click. This framework is a good basis for online tutorials. Included scripts that are ready to run are able to replace simple Java applets without drawbacks but with much more possibilities. Furthermore these scripts are perfect in different teaching scenarios: demo applications can be started via web browser and can be modified just in time. This modification can be done during lecture or within a drill-and-practice session. Examples in the context of computer graphics illustrate the usefulness of our framework in lectures