This paper illustrates teaching for transfer across languages by synthesizing key insights from theory and previously published research alongside our case study data from primary-level teachers in core French-second-language (CF) classrooms in Ontario, Canada. Drawing on research that redefines language transfer as a resource, this study drew on several influential theoretical notions and data collected through interviews and classroom observations. All of these sources point to a multi-leveled approach to teaching for transfer that includes considerations of learning, teaching and contextual features. Study data suggest that CF teachers plan for transfer and use a range of strategies likely to promote its use with students. This paper connects theory, research and practice with the aim of strengthening dialogue among researchers and educators.