Reporting on a Grade 4 teaching and learning sequence, we highlight foundational constructs of measurement and data modelling which are fundamental to competence development in both science and mathematics. The sequence involved students generating and representing measures of their teacher's arm-span, with a focus on the invention and refinement…

This paper reports on a conversation analytic study into the pass-on turns that teachers produce to return the floor to the class following one student's contribution, in the context of whole-class discussions around texts in 4th grade history and geography lessons. These pass-on turns are remarkable, as the teachers take the turn in order to…