Metacognition refers to thinking about one's own thinking. It involves self-regulation and self-reflection of strengths, weaknesses, and learning strategies. There are two main components of metacognition - metacognitive knowledge (knowledge of one's own cognition) and metacognitive regulation (control and management of cognition). Teachers can help develop students' metacognition through strategies like asking questions, encouraging self-reflection, teaching learning strategies directly, and providing opportunities for students to monitor and evaluate their own learning. Developing metacognitive skills helps students become more effective, independent learners.