Language for developing collaborative learning activities on World Wide Web

World Wide Web (WWW) is being wide-spread used. People at different place can read the hypermedia information through the computer network. Therefore, many educators tried to develop a distance learning system on WWW so that people in different places can learn at any time. However, some learning activities, such as discussion, collaboration, and conference, are difficult to implement on WWW for teachers who are not computer science major. In this paper, we proposed a methodology by which teachers can build their collaborative learning activities on WWW effortlessly. The specification language, called Learning Activities Description (LAD), is devised for teachers to specify their learning activities and styles. Our system can generate the required programs according to the LAD specification. Therefore, designing learning activities by using LAD can be as easy as designing courseware by using HTML.