Abstract Consistent with the theme of this issue, we describe the details of one continuing effort to build knowledge for teacher education. We argue that building a useful knowledge base requires attention to the processes used to generate, record, and vet knowledge. By using 4 features of knowledge‐building systems we identified in the introductory article for this issue—shared goals, tangible products, small tests of small changes, and multiple sources of innovation—we examine the knowledge‐building processes for K–8 teacher preparation under way at the University of Delaware. We conclude that the 4 features provide a useful mirror for clarifying the strengths and weaknesses of our local system and, at the same time, reveal a number of institutional obstacles for knowledge building that lie ahead.
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