KPPCDL: An Internet based shared environment for introductory programming education

The Karel++ Collaborative Laboratory is an Internet based educational tool, which facilitates the learning of Object-Oriented programming techniques, by providing a shared development environment for the building of student programs written in the Karel++ language. KPPCDL offers remote sharing of Karel++ program elements, collaborative source code editing, textual and graphical notification of both coarse and finely grained remote updates, remote and local views of developing program elements, updated views for late comers, background source parsing, and real-time memo sending. The system combines features of both centralized and replicated architectures, and provides for both synchronous and asynchronous collaboration.