Design patterns provide an overall structure for describing best practices. Design patterns originated in the field of architecture and urban design and gained popularity in programming and human-computer interaction. Instructors have recognized the value of design patterns for common course design and instructional issues. Pedagogical patterns specify a problem, provide the context, suggest resolution strategies, describe assessment activities, and identify related patterns. In this paper we apply pedagogical patterns to blended learning course design. We present an overview of pedagogical patterns, describe the collaborative effort involved in creating and assessing patterns, provide an example of pedagogical patterns for blended learning course design, and discuss how pedagogical patterns can advance our understanding of what works in the blended learning context.