I am interested in social epistemological dimensions of mathematics education. From perspectives of cognitive and social justice, my research focus on language, social and discursive diversity in mathematical practices. I am particularly interested in how students in heterogeneous classrooms inhabit the learning space together as they encounter school mathematics. My work is inspired by contemporary pragmatic philosophical perspectives and post-colonial ideas. Two major strands can be discerned in my research; multilingualism and digital tools in the mathematics classroom.