I am chatting with some colleagues right now, and explaining what I meant when earlier this week I referred to pragmatism as an episode of constructivism.
Pragmatism is a worldview or philosophy that is concerned with the application of what works in this or that context. If pragmatism is a paradigm that Creswell, in his Research Design: Qualitative, Quantitative, and Mixed Methods Approaches, has separated out from the others (like positivism or critical theory), then it occurred to me that pragmatism is doing something based completely on the context. In other words, it is constructing a method or approach to an issue as needed. This sounds surprisingly like constructivism, just reconstructed in time as needed and when needed.
Thus, pragmatism is an episode of constructivism.