GSDMC Executive Board
Here are your 2019-2021 GSDMC Executive Board Members.
Sean Nank
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Nancy Paulson
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Cheryl Coe
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Teresa McCarthy
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Sean Nank, President

The GSDMC brings resources to students, parents, and educators in our local communities which are essential for connections, collaboration, and the betterment of mathematics education. We stand on a precipice of change with our transition to Common Core. This transition makes GSDMC more important than ever before. I look forward to the opportunity as president to bring my experiences and resources to our wonderful organization. I will use my experience as a Presidential Awards for Excellence in Mathematics and Science Teaching (PAEMST) recipient, author, researcher, consultant, professor, previous GSDMC executive board member, and ICME-12 appointed mathematics assessment expert to continue the great work at the GSDMC.
I currently work as an adjunct professor at California State University San Marcos, a professor at American College of Education, and a high school mathematics teacher at Oceanside High School. I also periodically work for the United States Department of Education, National Science Foundation, California Commission on Teacher Credentialing, California Department of Education, Smarter Balanced Assessment Consortium, and LearnZillion. I also consult for various districts around the United States. For further information, please visit my website at www.SeanNank.com.
I currently work as an adjunct professor at California State University San Marcos, a professor at American College of Education, and a high school mathematics teacher at Oceanside High School. I also periodically work for the United States Department of Education, National Science Foundation, California Commission on Teacher Credentialing, California Department of Education, Smarter Balanced Assessment Consortium, and LearnZillion. I also consult for various districts around the United States. For further information, please visit my website at www.SeanNank.com.
Cheryl Coe, Treasurer

I have taught at Poway high for 10 years, currently I am the Math TOSA at Poway High for Common Core Math (one period). Prior to teaching at Poway I was at Clairemont High school for 4 years where I was Department Chair for the last 2 years. Prior to teaching I worked 15 years in the Investment Accounting field, I worked with Mortgage Backed Securities Government (GNMA, FNMA,) I created reports for my investors and remitted principal and interest funding monthly my total portfolio remittances were 80 million monthly. I was the Manager of the Mortgage Back Securities Private Portfolio department were I managed 5 staff and temporary employees as needed. I was also part of the Travel due diligence team to review portfolios my Company was interested in purchasing.
Nancy Paulson, VP Programs

I am a veteran teacher at the Middle Grades (4-8). The first 5 years of my California teaching experience was in the diverse, highly migrant, community of Imperial Valley. In 1996, I returned to my childhood home in San Diego County where I continued to work with a high percentage of English Language Learners as well as gifted students, teaching grades 4-8. Because I loved teaching math, I acquired my single subject, foundational credential for teaching mathematics and taught Pre-Algebra and Algebra to 7th and 8th grade students, EL and Honors Students. In May of 2012, I completed my Masters of Arts Degree, with an emphasis in K-8 Mathematics Education at San Diego State University. I have held the position of Conference Program Chair for the Greater San Diego Mathematics Council from 2006 to present and have been a card-carrying member of GSDMC and NCTM since 2001. I sees patterns and number relationships everywhere!
Aly Martinez, Equity & Access

As GSDMC's first Equity and Access Board Member, I'm am excited to help shape a role that will influence our annual conferences and professional development opportunities across San Diego. My path to becoming an educator was winding and took me from the University of British Columbia to San Diego City and Mesa College and finally UC San Diego. I've been a secondary mathematics teacher at Gompers Charter Middle School, The Preuss UCSD School, and San Ysidro High School and worked as a Teacher on Special Assignment as a Noyce master teacher in residence for EDS UCSD and as an induction math mentor for Sweetwater Union High School District. I have been proudly mentoring pre-service and early career teachers since my third year of teaching and have been inspired and motivated to professional growth by learning with other teachers. As a National City resident and parent, I am also a community organizer for my local elementary school district, helping plan and facilitate Family Math Nights that celebrate mathematics through the lens of CCSS practice standards. I am currently the Instructional Coordinator for TK-12 Mathematics in San Diego Unified School District, helping transform mathematics instruction with an incredible team of innovative teacher and administrator leaders.
As a lifelong educator, I am compelled and driven to improve access to rich, relevant, and rigorous mathematical experiences for each student. I want to support teachers and administrators in identifying policies and practices that marginalize, silence, and deny students in math classrooms. I aim to create conditions for students to experience mathematics that empowers and inspires critical thinking and wonder. I see mathematics as a tool for developing student agency, for making sense of the world around us, and as a critical lens for consuming information and making choices. It is my greatest hope that future generations begin to share in this vision of mathematics and, as a result, neighborhoods around our schools are raised up with community-based solutions driven by empowered children, parents, and stakeholders.
As a lifelong educator, I am compelled and driven to improve access to rich, relevant, and rigorous mathematical experiences for each student. I want to support teachers and administrators in identifying policies and practices that marginalize, silence, and deny students in math classrooms. I aim to create conditions for students to experience mathematics that empowers and inspires critical thinking and wonder. I see mathematics as a tool for developing student agency, for making sense of the world around us, and as a critical lens for consuming information and making choices. It is my greatest hope that future generations begin to share in this vision of mathematics and, as a result, neighborhoods around our schools are raised up with community-based solutions driven by empowered children, parents, and stakeholders.
Jenn Carr, VP Membership

I am passionate about working with students and teachers in order to provide all students with experiences with mathematics that elicit sense making, curiosity, and a positive disposition towards math. One of my first experiences with GSDMC was attending their conference as a student teacher and hearing an inspiring presentation from Dan Meyer which influenced the course of my educational career. For the past two years, I have worked with GSDMC as a member of the conference committee. I am so grateful to be a part of a committee that provides inspiring and career changing experiences for fellow educators. I received my M.Ed. with an elementary mathematics emphasis certificate from University of California, San Diego, while completing coursework for both my multiple subject credential and single subject math credential. I have served as an elementary classroom teacher, elementary math TOSA, math intervention specialist, and currently serve as an instructional math coach in San Marcos Unified School District. I look forward to connecting with and learning from colleagues throughout San Diego County through GSDMC. We are better together!
As VP of Membership, I hope to amplify the influence of GSDMC’s professional learning opportunities and events, strengthen our local math networks, and support our members in providing equitable and engaging learning experiences for all students.
As VP of Membership, I hope to amplify the influence of GSDMC’s professional learning opportunities and events, strengthen our local math networks, and support our members in providing equitable and engaging learning experiences for all students.
Teresa McCarthy, Secretary

The day I stop learning is the day I stop teaching. After 21 years of teaching, I still have more to learn and that is a very exciting thing! I’m committed to seeking opportunities to grow my craft and want to help grow our local math networks and tap into the talent that we have in San Diego through GSDMC. My teaching experience began in San Bernardino as a third-grade teacher for 3 years, then one year in Corona as a self-contained 6th grade teacher before settling in San Marcos where I taught 4 years as a middle school special education teacher and 10 years as a 5th grade general education teacher. Three years ago, I made the transition to 6th grade single-subject math in a new K-8 school after receiving my masters from SDSU in K-8 mathematics. I initially got involved in GSDMC a few years ago as one of the annual conference program co-chairs, then secretary in 2017. I would like to continue to contribute to the growth and evolution of the organization, so we may better support teachers and students in the community.