The aim of this study was to investigate prospective secondary mathematics teachers' perceptions on and adaptation of student-centred approach to teaching. The study was conducted with 58 prospective secondary mathematics teachers who were the graduates from mathematics departments from different universities' Science and Literature faculties. They were educated to teach in secondary schools during their Pedagogical Formation Certificate Program at the Education Faculty in a western university in Turkey. In this study, Constructivist Learning Environment Survey (CLES) was administered to the participants, and reflection papers were collected to understand their perceptions towards student-centred approach to teaching. To understand whether and how they adapted student-centred curriculum into their teaching, the videos of micro-teaching experiences were examined. The findings suggested an improvement on prospective teachers' scores on CLES. It was also found that prospective teachers satisfied several expectations of the approach during microteaching.