##### Tuyin An

Associate Professor of Mathematics Education, Georgia Southern University

##### Steve boyce

Associate Professor of the Fariborz Maseeh Department of Mathematics and Statistics, Portland State University

##### Orly buchbinder

Associate Professor of Mathematics Education at the Department of Mathematics and Statistics, University of New Hampshire

##### Steve cohen

Associate Professor of Mathematics,

Roosevelt University

##### dorin dumitrascu

Associate Professor of Mathematics, Adrian College

##### henry escuadro

Professor and Chair of Mathematics, Juniata College

##### Erin krupa

Associate Professor of Mathematics and Statistics Education, North Carolina State University

##### nat miller

Professor of Mathematical Sciences, University of Northern Colorado

##### laura pyzdrowski

Professor of Mathematics, West Virginia University

##### Steve szydlik

Professor of Mathematics, University of Wisconsin Oshkosh

##### Sharon Vestal

*Associate Professor of Mathematics Education, South Dakota State University*

The authoring team would like to thank the following people for their contributions:

Amanda Brown

Pat Herbst

Carolyn Hetrick

Mike Ion

Tabitha Mingus

Matt Park

RuthMae Sears

Julia St. Goar