The document discusses TPACK (Technological Pedagogical Content Knowledge), a framework for teacher knowledge. It introduces TPACK as the intersection of technology, pedagogy, and content knowledge. It describes Pedagogical Content Knowledge (PCK), which refers to the relationship between subject knowledge and teaching methods. PCK involves transforming content for teaching using multiple representations and adapting to student prior knowledge. The document then defines the three components of TPACK: technology knowledge, technology content knowledge, and technology pedagogical knowledge. It concludes by noting TPACK's implications for effectively integrating technology into teaching.