This paper describes a case study investigating the impact of a primary mathematics method programme on pre-service primary teachers' capacity, and willingness to learn and teach mathematics for relational understanding. The programme, a collaborative endeavour between primary schools and university tutors, enables student teachers to practice in an on-going, integrated and consistent manner what they are learning in theory, and to re¯ect on their experiences. The ® ndings from test, questionnaire and interview data indicate that the weekly cycle of theory, practice and re¯ection in which student teachers engage enhances their capacity, and provides an incentive for them to learn and teach mathematics for relational understanding.