“…In a school setting, the interaction between the teacher and the learner is essentially dialogical (ibid) so language is one of the tools of mediation between the subject to be learnt and the learner. There has been much research into the role of talk in primary schools in the UK which is based on the premise of teacher and student talk as the mediating tool in the construction of knowledge (Mercer, 1995(Mercer, , 2000Myhill, 2004;Myhill & Warren, 2005). Structured classroom talk between teacher and students guides the construction of knowledge (Alexander, 2001(Alexander, , 2004Mercer, 1995Mercer, , 2000Mercer & Littleton, 2007).…”