Development and evaluation of a distance learning system based on CSCW

TP311.52; This paper described a distance learning system, which allowsInternet users to conduct a lesson in real-time from any kinds- attached computers. Pa rt icipants can jointly view and edit relevant multimedia information distributed t hrough Internet. Teachers and students can also simultaneously communicate by vo ice and text to discuss the problems. Teacher can broadcast streaming PowerPoint presentation in real time to network users. In addition to sliders, presenters can broadcast video and audio simultaneously to deliver a live multimedia show o nline, and store their presentations for on-demand playback. Teachers distribut e d in different places can also use cooperative editing tool to edit and encode e xisting digital content. We discussed some important design principles of the sy stem. Then, the system configuration and the results of evaluation are also pres ented. The system has proved to be applicable to the distance learning based on CSCW (Computer Support Cooperative Work) in Internet.