This paper proposes to overcome the traditional essentialist and dichotomous ways of conceptualising language and language pedagogies, i.e. to go beyond linguistic purist perspectives. Analysing bilingual teaching practices in a science lesson, the paper proposes that practical bilingual pedagogies can be developed to help students in bilingual education programmes to access dominant linguistic resources and discourses by capitalising on their indigenous linguistic and cultural resources.[Copyright of Language and Education is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.2167/le643.0]