Science education policies and standards have called for educators to teach students about the Nature of Science (NOS) and engage them in Culturally Relevant Science Teaching (CRST), which requires critical shifts away from traditional science teaching. As such, teachers are being asked to possess or take up conceptions of science that challenge…

Beginning with a reference to living in a time of both uncertainty and opportunity, this article presents a discussion of key areas where shared understanding is needed if we are to successfully realize the design and use of high quality, valid assessments of science. The key areas discussed are: (1) assessment purpose and use, (2) the nature of…

Epistemic criteria are the standards used to evaluate scientific products (e.g., models, evidence, arguments). In this study, we analyzed epistemic criteria for good models generated by 324 middle-school students. After evaluating a range of scientific models, but before extensive instruction or experience with model-based reasoning practices,…