“…The term "chalk and talk" is commonly used to describe such teaching methods, which have been criticised as being transmissive, teacher centric and ineffective (Bates, 2014). However, these criticisms have generally been made without consideration of the disciplines involved, and Fox and Artemeva (2011) determined that in the context of mathematics education what they termed a "chalk talk" approach can be "pedagogically interactive, meaningful, and engaging" (p. 87), even when it is essentially transmissive. A valuable component of the lecture can be the explicit modelling of expert thinking (Bates, 2014;Bergsten, 2007;McKeachie & Svinicki, 2013) which, in the context of mathematics education, Greiffenhagen (2008, p. 11) described as "situations in which an experienced mathematician demonstrates mathematical expertise to novices as an important part of their progressive induction into professionally competent autonomous mathematical practice".…”