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MLC Team: People on a Mission

In addition to the key contributors we highlight here, we are grateful to the many colleagues who support our efforts to make a difference in math education.

Leadership

Rick Ludeman

Rick Ludeman

Chief Executive Officer

Rick served on the MLC board and later as a consultant to the organization before becoming part of the staff in 2004 as Vice President of Communications. He became Chief Operating Officer in 2007, was appointed President in 2011, and CEO in 2019. Rick has masters' degrees in business administration and adult education. Prior to joining MLC he spent several years as an independent management consultant and 13 years at Intel Corporation in finance, staffing, and communications.

Jill Nickerson

Jill Nickerson

Chief Financial Officer

Jill oversees the finance, accounting, and legal aspects of the organization. Jill has over 25 years’ experience in financial leadership across multiple industries, having served as the VP Finance & Administration for Zepher, CFO for Audio Precision, and Finance Director for The Christie School. She has an undergraduate degree in accounting and a master’s degree in business administration. Jill currently serves on the local chapter board of Financial Executives International and has served on the board of other local area nonprofits.

Nicole Rigelman

Nicole Rigelman

Chief Academic Officer

Nicole’s responsibilities include developing and overseeing the research framework and roadmap of the organization. Simultaneously, she is a professor in the Curriculum and Instruction Department at Portland State University. Her academic research focuses on using ​mathematical reasoning, discourse, and problem solving with visual models as well as ​the influence of curriculum materials and assessment on instructional practice. View her profile on Google Scholar.

Patrick Vennebush

Patrick Vennebush

Chief Learning Officer

Patrick oversees the areas of Educator Support, Educator Resources, and Development. During his two decades in math education, he served as a classroom teacher, wrote questions for MathCounts, led the development and launch of a digital secondary math curriculum for Discovery Education, and oversaw the creation of materials and digital interactives for the Illuminations project. For fun, Patrick runs a middle school math club, and he is the author of Math Jokes 4 Mathy Folks.

Education Leads

Anette Carroll

Anette Carroll

Senior Advisor of Educator Support
Corey Drake

Corey Drake

Senior Director for Professional Learning
Cynthia Hockman-Chupp

Cynthia Hockman-Chupp

Advisor
Kim Markworth

Kim Markworth

Director of Content
Emily Saxton

Emily Saxton

Director of Research
Mike Wallus

Mike Wallus

Vice President of Educator Support

Board Members

The Math Learning Center is fortunate to have a dedicated team of volunteer board members that together bring deep experience in education and the teaching and learning of mathematics.

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Steve Burt

Chair

Steve is currently the Director of Strategy for Clarity Innovations, an Oregon-based ed-tech professional services firm. He oversees development of new solutions for Clarity's clients which typically involves blending research-based practices with emerging technologies. Right now, he's paying attention to the education potential of new learning technologies as well as how changes in digital publishing are impacting the classroom. In working with educators and students for nearly two decades (both as a former high school teacher and principal) he is skilled at understanding a wide variety of technologies and their application to education. 

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Elizabeth Coyner

Secretary

Elizabeth currently serves as the Executive Director of CPM Educational Program, a California nonprofit empowering mathematics students and teachers for grades 6–12 via exemplary curriculum, professional development, and leadership. In addition to being a classroom mathematics teacher for many years, she has also been a CPM author and workshop leader since 1993.

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Dr. Rebekah Elliott

An Associate Professor at Oregon State University in Mathematics Education, Rebekah designs, researches, and facilitates professional learning of math teacher candidates, teachers, and leaders to meet ambitious learning goals for diverse students. She had the chance to see the ways in which MLC materials support students’ mathematical reasoning while studying educational reform in Kentucky and while working in her son’s primary math classroom. Prior to graduate school, Rebekah was a high school mathematics teacher in California.

Dr Nicole Joseph

Dr. Nicole Joseph

An Associate Professor of Mathematics Education at Vanderbilt University, Dr. Joseph examines the role structural systems of oppression (i.e. racism or white supremacy) play in the mathematics learning experiences of Black girls and women across the pipeline. Dr. Joseph is a former middle school mathematics teacher and instructional coach in public/private schools in the Pacific Northwest. She has published her work in top journals such the Harvard Education Review. One important goal is to help mathematics teachers understand the complexities of Black girls' and women's social identities and how mathematics classrooms often exclude Black girls because of the ways their social identities can show up in classrooms.

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Ranie Lambe

Ranie is a language arts teacher turned strategic partnerships innovator, with experience in business development, partner retention, and team leadership within the K12 Education Technology sector. Her background is in traditional sales and management, as well as nonprofit development and market expansion. Ranie is passionate about strengthening and scaling equity, particularly for those in underserved populations. She currently works as a Director at Microsoft on the Education and Academic Medical Centers team.

Matthew Tsugawa

Matthew Tsugawa

Treasurer

Matt is the Director of Finance at Cambia Health Solutions. Previously, he served as CFO of Friends of the Children—Portland, an award-winning professional mentoring organization, served as CFO at the Drupal Association and PECI, managed business development at A&E Television Networks, and worked as a consultant at the Tokyo offices of Arthur Andersen and KPMG. Matt is a Certified Management Accountant, and received a BA from the University of Colorado at Boulder and an MBA from the Yale School of Management.

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Dr. Bill Zahner

Bill is an associate professor in the mathematics department at San Diego State University. He teaches mathematics and mathematics education courses for current and prospective teachers. He is also the associate director of the Center for Research in Mathematics and Science Education at SDSU. Bill's research investigates how teachers can design classroom learning environments so all of their students, including students who are learning English, have an opportunity to learn key mathematical ideas and concepts. Bill's interest in this research area was sparked by his experience teaching high school mathematics for three years in Chuuk, Federated States of Micronesia.