For several years, the literature on plurilingualism (bilingualism) has been interested in code-switching in the school context. At the intermediate (activities) or micro level (interactions), this is often referred to as translanguaging (in the English speaking literature). What is the pedagogical use of languages in schools : academic language (L1), learning foreign languages (L2 or L3) or students' home languages ? In this article, I present literature-based definitions, describe the translanguaging of the teacher and students, and finally present a few classroom-based practices. The article concludes with reflections on translanguaging for future teaching practices.