An influential trend in contemporary theories on learning is what could be referred to as the socio-cultural trend. Within this line of thinking, the social nature of learning is emphasised, as expressed by for example Jean Lave (1993) who argues that learning can be understood as changing participation in situated interaction. In other words, learning is considered to be something that takes place between people in interaction. As a consequence, it is by examining the situated interaction between people that we are able to understand and analyse the learning process and how knowledge is created. Then the question arises as to what we need to know about interaction to be able to locate and understand learning. What in interaction between people is of relevance for the understanding of the learning process, and what is it that we are able to capture and understand when we study learning in terms of changes in interaction patterns?