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,…

Explores the use of free sort methodology to compare BSCS student and teacher understanding of the BSCS conceptual framework. Results support the idea that teachers who have better understanding of the BSCS conceptual framework, as shown by their sort patterns, may impart this understanding more effectively to students. (CS)