“…It is pedagogical content knowledge (PCK), as outlined by Schulman (1987) and others (De Miranda, 2008;Driel & Berry, 2012;Gess-Newsome & Lederman, 1999;GessNewsome, 1999aGessNewsome, , 1999bGrossman, 1990;Kind, 2009). Initial teacher education programmes speed the development of a teacher's PCK, though some aspects of PCK are more difficult to deal with than others and can take years to develop, and one can argue that a teacher's PCK never stops developing throughout their career.…”