This document discusses metacognition, which refers to thinking about one's own thinking. It defines metacognition and explains its two components: metacognitive knowledge and metacognitive regulation. Metacognitive knowledge involves knowledge about cognitive processes, while metacognitive regulation refers to using strategies to monitor and regulate one's cognition. The document outlines three categories of metacognitive knowledge according to Flavell: person variables, task variables, and strategy variables. It provides examples to illustrate each variable and discusses the differences between novice and expert learners, with experts employing more metacognitive strategies.