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…

This paper deals with a novel method for improving the traditional "verification" laboratory in science education. Drawing on the idea of integrated instructional units, we describe an instructional sequence which we call the Babushka concept. This concept consists of three integrated instructional units: a start-up lecture, a laboratory…