Professor Emeritus, Department of Mathematics
San Jose State University
San Jose, California

Mathematics Consultant
San Diego County Office of Education
San Diego County, California

Math Consultant
Carroll ISD
Southlake, Texas

Elementary Math Specialist
Venus ISD
Venus, Texas

Chair of the Curriculum and Instruction Department College of Education
University of Houston
Houston, Texas

Associate Dean of Academic Affairs
Rutgers University
New Brunswick, New Jersey

NCTM President and Professor of Education
McDaniel College
Westminster, Maryland

Senior Research Associate, Mathematics Case Methods Project
West Ed
Oakland, California

Professor of Mathematics
Rowan University
Glassboro, New Jersey

Visual Learning Specialist and Author
Boston, Massachusetts

Secondary Mathematics Coordinator
Los Angeles Unified School District
Los Angeles, California

Coordinator of Elementary Mathematics
Howard County Public Schools
Howard County, Maryland

Associate Dean for Assessment and PreK-12 Education
Texas A&M University
College Station, Texas

Edward Mallinckrodt Distinguished University Professor in Arts & Sciences
Washington University
St. Louis, Missouri

John A. Van de Walle

Professor Emeritus, Mathematics Education
Virginia Commonwealth University
Richmond, Virginia

Professor
The University of Toronto
Toronto, Canada

Private Consultant