“…In contrast, understandings of metalanguage within systemic functional linguistics (SFL; Halliday & Matthiessen, ; Rose & Martin, ; Schleppegrell, ) include terminology for connecting both structural and functional units of language systematically to their meaning‐making potential in particular contexts of learning. Functional metalanguages, mediated through explicit scaffolded pedagogies and based on the principle of high challenge, high support (Mariani, ), have been adopted in a wide range of TESOL contexts to engage learners at all phases of language development (de Silva Joyce & Feez, ; Emilia, ; Mohan & Slater, ; Schleppegrell, ). Despite challenges in recontextualising SFL terminology for pedagogic purposes (Bourke, ), the use of functional metalanguage has enabled the criteria for writing performance to be made visible to students in classroom instruction, assessment, and feedback, and facilitated schoolwide approaches to literacy (Caulkins, Ehrenworth, & Lehman, ).…”