ABSTRACT This study serves as an example of Conversation Analytic (CA) research with a focus on the interactional management of learning in classroom interactions, while simultaneously illustrating the several steps and procedures used for conducting these analyses. In this case, the method of CA is used to study students’ ‘oh’-prefaced utterances in one-to-one classroom interactions centred around explanations. The interactions are studied from the participants’ perspective by means of a turn-by-turn analysis of the selected fragments on the basis of video recordings and detailed transcripts, as is common practice in CA. This study aligns with previous CA research focusing on the details of classroom interaction relating to students’ learning processes. The results of the close analysis of the data provide insight into the orientation teachers and students show to interactionally exhibited knowledge displays in relation to the entire explanation activity they are involved in. This detailed analysis of one-to-one explanation interactions in secondary school classrooms provides insight into students’ learning processes as well as into the accompanying teacher practices.