Conference PaperConfronting Frame Alignment in CT Infused STEM ClassroomsBain, C.; Dabholkar, S.; Wilensky, U.Kong, S.C.While the Next Generation Science Standards (NGSS) have presented computational thinking(CT)as an integral part of scientific inquiry, little work has been done to explicitly enable this connection in classrooms. We report on the efforts of one such design-based implementation research project which, with participation from local teachers, has been implementing CT infused STEM units in biology and chemistry classrooms. Using teacher reflections facilitated by an external evaluator, research field notes, and interviews, we identify possible issues of frame alignment in our implementations–that CT practices, particularly using computational models, were valued but would not enable students to gain a deeper understanding of scientific content. We then use this analysis and Schulman’s definition of teacher case knowledge to design a new element of the project that aims to enable teachers to promote collaborative scientific practice using computational models in the classroom that we call Lesson 0. We conclude with the discussion of a pilot implementation of this new lesson.2020-04-0110203610International Conference on Computational Thinking Education 202091-94https://doi.org/1640201National Science Foundation