After the presentations of the AAPT, we leapt right into the PERC and were even busier there. Conference program Invited Posters: Benedikt W. Harrer, Rachel E. Scherr, Michael C. Wittmann, Brian W. Frank, Hunter G. Close, “Elements of Proximal Formative Assessment in Learners’ Discourse about Energy” (abstract) John R. Thompson, David Roundy, Donald B. Mountcastle,
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