The objective of this chapter is to make explicit the models of analysis of the interactions that arise in Blended Learning, for which it is required to define the categories that configure the discourses built in the scenarios that configure them; basically studies in this field have privileged what happens in forums and online chats. The corpus of analysis, that is, the discourses retrieved from the didactic exchanges constitute the input on which the possibilities of knowledge construction are explored; a process that demands to consider the sequences that contribute to its unveiling. The models presented here are intended to show the multiplicity of possibilities involved in determining the interactions that make possible the collaborative construction of knowledge.