TPACK stands for Technological Pedagogical And Content Knowledge. I had never heard of TPACK before so I learned a lot! Basically, TPACK is a integreation of pedagogical, content, and technological knowledge. Pedagocial knowledge is the knowedge that teachers have about teaching. Content knowledge is knowing facts about something specific. Technological knowledge is knowing how to use different technologies. Putting all of these together gives you TPACK. It is the knowledge of how to use technology to teach a specific topic while meeting pedagoical needs. It is necessary for teachers to have this knowledge so that can use the right kind of technology to teach specific topics in their classroom. By using the correct tools, they can hold their students attention. It will also help them teach in a variety of ways. Teaching with technology tools helps the students be hands on with their work. It is more likely that they will remember what they have learned if they have done the experiment themselves.