Introduction
An accompanying paper in this volume (Swan & Burkhardt 2014) outlines the rationale, design and structure of the lesson materials developed in the Mathematics Assessment Project (MAP)[1]. In short, the MAP team has designed and developed over one hundred Formative Assessment Lessons (FALs) to support US Middle and High Schools in implementing the new Common Core State Standards for Mathematics. Each lesson consists of student resources and an extensive teacher guide. About one-third of these lessons involves the tackling of non-routine, problem-solving tasks. The aim of these lessons is to use formative assessment to develop students’ capacity to apply mathematics flexibly to unstructured problems, both from pure mathematics and from the real world. These non-routine lessons are freely available on the web:http://map.mathshell.org.uk