Responding to Ankur’s Challenge: Co-construction of Argument Leading to Proof

Abstract

In previous chapters, we saw elementary students work in classrooms on counting problems presented by researchers. In this chapter, we observe a group of five high school students working under different circumstances. When the students in the longitudinal study entered high school, they no longer worked on problems in class. Instead, the students who remained in the study worked on problems in after-school sessions scheduled by the researchers and for which the students rearranged their after-school schedules in order to attend.