“The rich set of theoretical constructs, methodological innovations, and connections to existing areas of study in mathematics education that have become available as a result of the sub-field of mathematics education research that is represented in this volume are a valuable contribution to mathematics education more broadly. They have the potential to add texture and variety to the depiction of the work of teaching that is currently present in our literature.” (Daniel I. Chazan, Educational Studies in Mathematics, Vol. 111 (3), 2022)