- Supplemental Materials (PDF 915 KB)

^{*}James Hiebert, School of Education, University of Delaware, 107 Willard Hall Education Building, Newark, DE 19716; hiebert@udel.edu

^{*}Dawn Berk, Department of Mathematical Sciences, University of Delaware, 501 Ewing Hall, Newark, DE 19716; berk@udel.edu

^{*}Emily Miller, Department of Mathematics, West Chester University, 25 University Avenue, West Chester, PA 19383; emiller@wcupa.edu

^{*}Heather Gallivan, Department of Mathematics, University of Northern Iowa, 220 Wright Hall, 1227 West 27th Street, Cedar Falls, IA 50614; heather.gallivan@uni.edu

^{*}Erin Meikle, Duquesne University, 600 Forbes Ave., Pittsburgh, PA 15282; eem154@gmail.com