  We designed and developed a set of free-response questions to assess learning
assistants pedagogical content knowledge in the context of questioning (PCK-Q).
Our goal was to develop a set of written free-response questions that would be
representative of the LAs PCK-Q observed in the classroom. In this paper we
discuss the design, development and validation processes. These include
videotaping and analysis of classroom interactions, development of a coding
rubric, and development, administration, and validation of written
free-response questions.
