The Technological Pedagogical Content Knowledge (TPACK) Framework describes the types of knowledge required by teachers for the successful and effective integration of technology in teaching. The most current representation of the framework is in the form of a three-circle Venn diagram within a larger circle. At the center are three partially overlapping circles representing three key knowledge domains: Content Knowledge (CK), Pedagogical Knowledge (PK) and Technological Knowledge (TK). The fourth circle (typically shown as a dotted line) encompasses the three overlapping circles and represents Contextual Knowledge (XK). Most importantly, the TPACK framework proposes that effective integration of technology in teaching requires the integration of the four TPACK knowledge domains—a form of knowledge greater than the knowledge of each of these domains in isolation. It is, instead, a recognition and deep understanding that these knowledge domains exist in tension with each other and that effective technology integration requires finding the right balance that connects the affordances of the technology with the requirements of the content and the pedagogical approaches given a particular educational context.