Demographic information often proves useful for finding subpopulations in educational data. Unfortunately, it is often not collected in the log files of online learning systems, which serve as one of the primary sources of data for the Educational Data Mining community. Recent work has sought to address this issue by investigating school-level…

Recent emphasis on discourse in mathematics classrooms has spurred a line of inquiry about different forms of talk in these settings. If mathematical thinking is understood to be a set of practices that includes mathematical discourse, argumentation, which has an especially important role in mathematics, requires analytic attention. In particular,…