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Abstract:
Towards our goal of developing computer tutors that can collaborate with students on tasks in simulated environments, we have built a series of four prototype tutors. These tutors integrate two independent but related strands of research: intelligent tutoring systems and task-oriented dialogue systems. While the tutors share a core approach to teactfing procedural tasks, each was designed to explore a different set of issues. This paper outlines the issues that arise in taskoriented tutorial dialogue and the ways they have been addressed in these four tutors.