Teaching material is one of the most important components of the material culture of schools. The aim of this paper is to study such material in relation to the educational ideas and school practices developed by one of the most significant schoolteachers of the early decades of the twentieth century: Rosa Sensat i Vilà. To achieve this, we conceptually define the term «teaching material», present some biographical notes on Rosa Sensat, investigate the importance of teaching trips in her conceptions of education, and analyse her pedagogical thought on teaching material and its use in schools, specifically in the groups of girls that she was responsible for at the Escoles de Bosc de Montjuic in Barcelona.