摘要：Paper introduced the concepts and effecting factors of constructive theory. The four factors take essential and important effects in constructive theory. They are circumstances, coordination, dialog and meaning construction. Then gave out a detailed virtual study mode description and stressed the methods of 3D virtual study environment establish ment. Paper mainly discussed the research and application of a virtual three dimensional study technology, including user interface and interactive technology, database access technology and virtual avatar technology. Relatively it presented application systems that we developed for corroborative evidence.
关键词：constructive theory; virtual study; three dimension technology; avatar
