The document discusses Technological Pedagogical Content Knowledge (TPACK), which is a framework that describes how teachers effectively integrate technology, pedagogy, and content knowledge. TPACK addresses a teacher's mastery of content knowledge, pedagogical knowledge, and technological knowledge. Specifically, content knowledge is the subject matter expertise, pedagogical knowledge is understanding how to teach, and technological knowledge is how to use technology to enhance learning. TPACK is about combining these three areas of teacher knowledge to assist teaching.