This paper first reports on the methodology of a study of teacher knowledge for statistics, conducted in a classroom at the primary school level. The methodology included videotaping of a sequence of lessons that involved students in investigating multivariate data sets, followed up by audiotaped interviews with each teacher. These stimulated…

A teaching experiment to evaluate the language approach to learning graphical interpretation is described. A series of experiments using a science laboratory were described using either tables or graphs and the approaches contrasted. (MP)