Richard Barwell is associate professor at the Faculty of Education, University of Ottawa, Canada. His research is located in the intersection of applied linguistics and mathematics education, with a particular focus on multilingualism/ bilingualism in the teaching and learning of mathematics. His research interests include mathematics classroom discourse, mathematics learning in multilingual settings and the relationship between learning language and learning curriculum content and his work has been published in peer-reviewed journals in applied linguistics, mathematics education and general education. Prior to his academic career, Dr. Barwell taught mathematics in the UK and in Pakistan, where his interest in language and mathematics first arose.