This paper consists of an in-depth summary and analysis of the research and development state of the art for intelligent tutoring system (ITS) authoring systems. A seven-part categorization of two dozen authoring systems is given, followed by a characterization of the authoring tools and the types of ITSs that are built for each category. An overview of the… (More)
MetaLinks, an authoring tool and web server for adaptive hyperbooks, is described. MetaLinks hyperbooks provide textbook-like content in a flexible manner that supports opportunistic processes of active reading and learning. Through adaptive methods a single on-line artifact can address the diverse needs of a variety of user goals and backgrounds. The… (More)
We describe Wayang Outpost, a web-based ITS for the Math section of the Scholastic Aptitude Test (SAT). It has several distinctive features: help with multimedia animations and sound, problems embedded in narrative and fantasy contexts, alternative teaching strategies for students of different mental rotation abilities and memory retrieval speeds. Our work… (More)
Student log files can be used to infer students' attitudes that affect learning. Starting from a correlation analysis that integrates survey-collected student attitudes with student behaviors while using the tutor, we constructed a Bayesian Network that infers students attitudes and perceptions of the system.
We describe a portable coaching environment used within a domain-independent inquiry-learning infrastructure. This coach reasons about a student's knowledge and offers pertinent, domain-specific feedback. It promotes good inquiry behavior by critiquing the student's hypotheses and supporting data and relationships among propositions. Four inquiry tutors in… (More)
This paper describes the Eon system, a suite of domain independent tools for authoring all aspects of a knowledge based tutor: the domain model, the teaching strategies, the student model, and the learning environment.