Abstract
A student trying to learn from classroom instruction is confronted with a complex task. The successful student must determine what actions are expected by the teacher and must grasp the intended content of the lesson, connecting and integrating that content with prior knowledge. This paper presents a model of the skills a student needs to have to make sense of a mathematics lesson taught by a good teacher. The model of the learner contains a variety of cognitive competencies: an action system, a lesson parser, an information gatherer, a knowledge generator, and an evaluator. A description of how the model functions during a 2-day lesson sequence provides an empirical example.
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