This document discusses the use of mass media as an extension teaching method. It begins by presenting the objectives of discussing classifications of extension teaching methods and insights from a seminar on mass media. It then discusses considerations for choosing extension teaching methods and lists their classifications. Most of the document consists of sections about understanding the role and importance of mass media, how it reaches remote areas, and how community development practitioners use social media platforms. It concludes by assigning classification of example extension methods and providing references.