TPACK stands for technological, pedagogical, and content knowledge. Technological knowledge is knowing and understanding technology. Pedagogical knowledge is having knowledge and skills related to teaching. Content knowledge is to have knowledge about a certain subject and know all of the facts and concept. In order to be an effective teacher it is important to have all three of these. It isin't enough to have be familiar with two of these things; it is important to have a knowledge of all three. When all three are put together, teachers are able to effectively teach.