The goal of the authors' ongoing research is to better understand how student mathematical thinking that becomes public in a classroom can be used to support the learning of mathematics content and practices (e.g., Stockero & Van Zoest, 2011). Although there are often instances of student thinking that the teacher has intentionally cultivated…

The author has recently been experimenting with having students work at a set of six blackboards mounted on the walls of a maths teaching space. In this article, he describes this project which he started because he had become impatient with, and aggravated by the usual setup of a maths teaching space. He had started to question why there are…