Hello everybody today I'll be talking about Tpack model ( Technological Pedagogical Content Knowledge). Tpack is a model that enables instructors to consider where their qualities and shortcomings lie in their insight into content,pedagogy and how these territories cooperate for creative educating and learning. TK= A teacher's technological knowledge PK= A teacher's pedagogical knowledge CK= A teacher's knowledge of a lesson's content SAMR (Substitution, Augmentation, Modification, and Redefinition) Model. This model has 4 segments, they can be summarized by this image.