When collecting data, science education researchers frequently have multiple respondents evaluate multiple artifacts using multiple criteria. Herein, the authors introduce Multifaceted Rasch Measurement (MFRM) analysis and explain why MFRM must be used when "judges'" data are collected. The authors use data from elementary science…

Opportunities for the development of science-related pedagogy during training are necessarily limited for the generalist primary (elementary), preservice teacher. While school placement is an important context within which to develop such professional expertise, the role of institution-based learning is less well understood in this regard. This…