This document discusses using Twitter in the classroom and how it relates to TPACK (Technological Pedagogical Content Knowledge). It provides an agenda that covers what TPACK and Twitter are, how teachers are using Twitter, examples of implementation, tools used, new forms of assessment, and resources. The document then discusses hashtags, getting started on Twitter, advice from teachers, microblogging with Twitter, Twitter chats, tools like Tweetdeck and Buffer, and credits the sources of images.