The improvement of the Technologies of Information and Communication (TIC) resulted in the creation of new ways people communicate and new spaces where this communication takes place. Considering a variety of new spaces, we decided to highlight, on this study, the Cyberspace. On social networks such as Facebook and Orkut, exit many groups and communities focused on discussion and conversation on different topics: from information to entertainment. On this dissertation, we report our experience wi th three virtual communities from Facebook and Orkut. Also, mathematics was the topic of discussion on each of the studied communities. Our goal was to understand, from a phenomenological perspective, how dialogues about mathematics content are pos...