Exploration of Student's Use of Rule Application References in a Propositional Logic Tutor

Many tutors offer students reference material or tips that they can access as needed. We have logged data about student use of references with Deep Thought logic tutor which to understand why and how references are used. We find evidence that students use these references in systematic ways that change over the course of the tutor, and can be predictive of rule application errors. We can use this information to increase our understanding of which concepts students find similar, what times during the tutor students feel the need to use references. Our goal is to eventually incorporate data-driven feedback based on when and how the references are accessed.