"Technological Pedagogical Content Knowledge (TPACK) attempts to capture some of the essential qualities of knowledge required by teachers for technology integration in their teaching, while addressing the complex, multifaceted and situated nature of teacher knowledge. At the heart of the TPACK framework, is the complex interplay of three primary forms of knowledge: Content (CK), Pedagogy (PK), and Technology (TK). See Figure above. As must be clear, the TPACK framework builds on Shulman's idea of Pedagogical Content Knowledge."
Source: http://tpack.org/ a