1. Some principles of intelligent tutoring;Ohlsson,1987
2. A system which allows student to explore algorithms;Sleeman;Proceedings of International Joint Conference on Artificial Intelligence,1977
3. Misconceptions in students’ understanding;Stevens,1982
4. An investigation of computer coach for informal learning activities;Burton,1982
5. A global teaching strategy in knowledge-managed computer-assisted instruction systems;Marinov;Education and Training Technology,1994