“…Approaches to the induction of students into the multimodal disciplinary literacy practices of science have differed most noticeably in the extent to which they incorporate the development of students' explicit and systematic knowledge of the semiotics or meaning-making resources of language and image and the use as a pedagogic tool of a meta-language describing these resources. Arguably the most educationally influential delineation of the semiotics of the discourse of science has emerged from systemic functional linguistics (SFL) through research on language led by Halliday (Halliday & Martin, 1993), Martin (Martin, 2017;Martin & Veel, 1998) and Lemke (1990Lemke ( , 2004 and related systemic functional semiotic (SFS) research focusing more on images led by Kress (Kress, Jewitt, Ogborn, & Tsatsarelis, 2001;Kress, Ogborn, & Martins, 1998;Kress & van Leeuwen, 2006), Bateman (2008), O'Halloran (2003) and more recently Doran (2019). Such accounts of the multimodal discourse of science have clearly informed approaches to integrating disciplinary literacy development in science pedagogy such as the Representation Construction Approach (RCA) (Hubber & Tytler, 2017;Hubber, Tytler, & Haslam, 2010;Prain & Tytler, 2012;Tytler et al, 2018;Tytler, Prain, Hubber, & Waldrip, 2013) and Primary Connections (Aubusson et al, 2019;Hackling & Prain, 2008), but without their taking up the explicit teaching of knowledge about language and image and the associated metalanguage.…”