“…Items on this test were borrowed or adapted from several different sources, including the Diagnostic Teacher Assessment in Math and Science project (Saderholm, Ronau, Brown, & Collins, 2010), the Learning Mathematics for Teaching project (Hill, Schilling, & Ball, 2004;LMT, 2004), Numeracy Development Projects (Ward & Thomas, 2015), the Knowledge for Teaching Elementary Mathematics project (Schoen, Bray, Wolfe, Tazaz, & Nielsen, 2017), the Mills College Lesson Study Group (https://lessonresearch.net), and other publications (Beckmann, 2005;Newton, 2008;Norton & McCloskey, 2008;Schifter, 1998;Zhou, Peverly, & Xin, 2006). We are grateful to these people and organizations for sharing their intellectual property for research purposes.…”