Editor: Johanna Debrecht, Red Rocks CC, Northern Virginia CC
Review Editor: George Alexander, Madison Area Technical College
Production Manager: Keith Nabb, Piedmont Virginia CC
A Video-Based Task as a Window into Quadratic Function Graphing
Miran Byun, John A. Logan College
Eunmi Joung, Utah Valley University
The Mediant is More Than a Mistake
Michael W. Ecker, Pennsylvania State University, WilkesBarre Campus (retired)
Flipped Classrooms, Mathematics Identity, and Preservice Elementary Teachers
Carmen M. Latterell and Janelle L. Wilson, University of Minnesota Duluth
Alternate Test for Divisibility by 15
Charlotte Schulze-Hewett, Harper College
William Schulze-Hewett, Emerson Elementary School
Getting Around to Rounding
Jaehee Post, Katrina Palmer, William C. Bauldry, and Michael J. Bossé, Appalachian State University
How Many Boxes Can Fit in That Container? A Multifaceted Problem-Solving Adventure
Michael Heeren, Purdue University Global
Three-Act Tasks: The Gift that Keeps on Giving
Keith Nabb, Ruslan Gusakov, and Jillian Collier, Piedmont Virginia Community College
Using Moving Averages to Find Trends in Data
Sheldon P. Gordon, Farmingdale State College of SUNYFlorence S. Gordon, New York Institute of Technology
The Problem Section
Michael W. Ecker, Problem Section Editor
Stephen Plett, Associate Solutions Editor
