C. Sarah Tan has experienced a wide range of classrooms, as both teacher (from pre-school to higher education) and as researcher (on the ORACLE project). For the last three years she has been working closely with teachers, children and students to learn more about topic work and to find ways of developing it. She has worked at Oxford Polytechnic since 1982 and her responsibilities include leadership of the language courses for BEd students, supervision of student school experience and module leadership on the MEd programme.