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Erhan Selcuk Haciomeroglu, PhD, is an associate professor of mathematics education at the University of Central Florida. His research focuses on the conceptual understanding of calculus and technology integration in teaching.

Eileen Depka, PhD, has a background in assessment, common assessment design, rubric development, standards-based assessment, question design, classroom questioning practices, positive practices in grading and reporting, and the implementation of standards-based grading and reporting.

Edward C. Nolan is currently an assistant professor of education at Moravian University in Bethlehem, Pennsylvania, teaching courses to understand the middle level learner; mathematics methods courses for early childhood, middle level, and secondary mathematics; and supporting field placements in education across the grades.

Donna Simpson Leak, PhD, is superintendent of Community Consolidated Schools District 168 in Illinois. She has trained thousands of teachers and presented at more than 200 conferences worldwide.

Dianne DeMille, PhD, has over 40 years of experience in mathematics education and effective leadership techniques. She is a founding board member of a nonprofit organization supporting projects to improve at-risk populations through education.

Diane J. Briars, PhD, a mathematics education consultant, is president of the National Council of Teachers of Mathematics. She was mathematics director of Pittsburgh Public Schools for 20 years.

Craig Cullen, PhD, is an associate professor of mathematics education at Illinois State University. He works with preservice secondary mathematics teachers, regularly teaching methods courses and supervising student teachers.

Connie Schrock, PhD, is an expert in K–12 education and college-level mathematics and has decades of experience in collaborating closely with educators and districts to enhance student mathematics learning in middle school, high school, and college.

Christy McAloney is mathematics Common Core lead teacher for Grossmont Union High School District in California. Her primary focus is leading teachers through the implementation of PLCs and the Common Core curriculum.

Brian Dean, a former teacher, is senior instructional specialist in secondary mathematics for the District School Board of Pasco County, Florida, where he leads mathematics teaching and learning.