This article reports on an international study of the teaching of undergraduate mathematics in seven countries. Informed by rhetorical genre theory, activity theory, and the notion of Communities of Practice, this study explores a pedagogical genre at play in university mathematics lecture classrooms. The genre is mediational in that it is a tool employed in the activity of teaching. The data consist of audio/video-recorded lectures, observational notes, semistructured interviews, and written artifacts collected from 50 participants who differed in linguistic, cultural, and educational backgrounds; teaching experience; and languages of instruction. The study suggests that chalk talk, namely, writing out a mathematical narrative on the board while talking aloud, is the central pedagogical genre of the undergraduate mathematics lecture classroom. Pervasive pedagogical genres, like chalk talk, which develop within global disciplinary communities of practice, appear to override local differences across contexts of instruction. Better understanding these genres may lead to new insights regarding academic literacies and teaching.

This article explores the role of students’ prior, or antecedent, genre knowledge in relation to their developing disciplinary genre competence by drawing on an illustrative example of an engineering genre-competence assessment. The initial outcomes of this diagnostic assessment suggest that students’ ability to successfully identify and characterize rhetorical and textual features of a genre does not guarantee their successful writing performance in the genre. Although previous active participation in genre production (writing) seems to have a defining influence on students’ ability to write in the genre, such participation appears to be a necessary but insufficient precondition for genre-competence development. The authors discuss the usefulness of probing student antecedent genre knowledge early in communication courses as a potential source for macrolevel curriculum decisions and microlevel pedagogical adjustments in course design, and they propose directions for future research.