Our Team

Meet the brilliant people who make up our dedicated and fearless team.


Director of Partnerships, Ecuador

Director of Global Operations

Operations Coordinator, Guatemala

Director of Global Partnerships

Executive Director

Math Coach, Guatemala

Director of Programs, Guatemala

Individual Giving Manager


Professor of Mathematics at Indiana University of Pennsylvania

Real Estate and Private Equity Investor

Marketing Strategist

Past President of National Council of Teachers of Mathematics

Educational Technology Entrepreneur

Founder of FairRate

Co-Founder of T2TGlobal

Board Secretary, Co-Founder and Brand Director at T2TGlobal

Math Teacher at Carrboro High School, NC

Board Past President and Mathematics Teacher in Colombia

Professor of Urban Education at Rutgers University

Board Treasurer and Former Executive Vice President at T2TGlobal

Mathematics Education and Publishing Consultant

Vice President of Inter-American Committee on Mathematics Education

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Pao Castillo, MEd

Director of Partnerships, Ecuador

Pao is based in Quito, Ecuador, where she worked as a math professor at the Universidad San Francisco (USFQ). She taught statistics and researched mathematics teaching and learning as part of the Ecuadorian delegation of the Capacity and Networking Project organized by the International Commission on Mathematical Instruction. She has a BS in Mathematics from USFQ, as well as a Master’s Degree in Education through the Instituto Tecnológico y de Estudios Superiores de Monterrey (Mexico). Her interests outside of mathematics and her family include music, soccer and painting. 

Manuela Cea-Poblete, MA

Director of Global Operations

Manuela brings over ten years of experience gained in various NGOs and nonprofits around the world. A Chilean and Londoner, Manuela has always had strong connections with the Latin American community. In 2015 she made the move to Guatemala and spent two years as T2TGlobal’s Country Director. She now makes her home in Barcelona, Spain, where she oversees T2TGlobal’s financial and administrative operations. Manuela earned a Bachelor’s Degree in Multi-Media Journalism at England’s Bournemouth University as well as a Master’s Degree in Anthropology of Childhood, Youth, and Education at Brunel University in London.

Hans del Cid

Operations Coordinator, Guatemala

Hans is a graduate of the National State University of Guatemala, where he completed his studies in linguistics. He has worked as a translator and interpreter on several T2TGlobal trips, including the 2013 inaugural visit to Santa Avelina, Guatemala. Hans’s in-country presence extends to managing business dealings for T2TGlobal. Hans has done volunteer work in rural areas of Guatemala, as well as coordinating volunteer groups that served in a project area of the landfill area of Guatemala City.

Callie Herring, MA

Director of Global Partnerships

Callie is based on the coast of Ecuador, where she leads T2TGlobal’s global partnerships. She studied Elementary Education at Appalachian State University and has a Master’s Degree in Bilingual Education from the University of Texas at the Permian Basin. A former Teach for America member, she has taught in NC, Costa Rica and the Dominican Republic. Callie’s deepest desire is to expand opportunities for students from marginalized communities by using education as a tool for social justice. Her favorite place to be is a classroom, followed by any beach, as long as her rescue pitbull comes along.

Ali Jones

Executive Director

Ali provides the leadership that enables T2TGlobal to carry out its mission. Since a trip to Nepal in 2008 opened Ali’s heart, she has thrown herself into nonprofit work. Ali feels passionate about empowerment through education, and she has applied her exceptional skills toward improving the lives of children around the world. Fluent in Spanish, Ali has traveled to more than 30 countries to volunteer, work, study, and explore. On the rare occasions when Ali is in the US, her home base is Austin, Texas. 

Fátima Santos

Math Coach, Guatemala

From her classroom in Sacatepéquez, Fátima witnessed strides being made when T2TGlobal coaches visited her school. She now has taken a leadership role in coaching her peers. She has worked as an elementary and middle school teacher after gaining her Teaching Associate’s Degree in Middle School Education with a focus in Physics and Mathematics from the University of San Carlos de Guatemala. She is currently working towards a Bachelor’s Degree in Middle School Education Pedagogy with a focus in Natural Science. 

Alix Van Zandt, MA

Director of Programs, Guatemala

Alix came to T2TGlobal following two years developing curriculum and training local teachers for a school in rural Guatemala that empowers indigenous girls through education. She has lived in Guatemala since 2014 when she was placed in Antigua, Guatemala, as a PILA (Princeton in Latin America) Fellow at Antigua International School. Originally from Seattle, WA, Alix earned her Bachelor’s and Master’s Degrees from Stanford University in Political Science and Latin American Studies, respectively. She has lived and worked abroad in Panama, Spain, and Guatemala.

Suhailah Waheed

Individual Giving Manager

Suhailah brings her resource development expertise to support T2TGlobal’s mission. She is happiest at the intersection of technology, stewardship and fundraising. Prior to joining the T2TGlobal team, she worked for nonprofits focused on such issues as clean water and women’s leadership. A North Carolina native, Suhailah earned her Bachelor’s Degree from North Carolina Central University. She then relocated to Austin, Texas, where she can be found enjoying the sunny weather while eating the most colorful macarons in town.

Francisco Alarcón

Francisco is Professor of Mathematics at Indiana University of Pennsylvania. Among his main areas of professional interest are effective professional development for K-12 teachers, the use of technology in the classroom, and ethnomathematics, in particular the arithmetic and geometry of the Maya culture. He has been an investigator in 35 grants to diverse agencies in the US. He has also been actively connected with Hispanic high school students in his region. The Allegheny Mountain Section of the MAA has honored his contributions with a mentoring award. Francisco is originally from Guatemala City.

Hunter Bost

Hunter is co-founder of McDuff Capital, where he focuses on small manufacturing, as well as multi-family, residential, and commercial real estate development. Previously, Hunter was a principal with Electra Partners, where he put his fluent Spanish to use managing the firm’s Latin American investments. A graduate of the University of North Carolina at Chapel Hill, Hunter currently lives with his wife and sons in Durham, NC.

Cynthia Kastner

Cynthia is Vice President of T2TGlobal’s Board of Directors, who is a marketing and communications strategist for socially conscious businesses. She helps entrepreneurs and small business owners effectively communicate their mission to their audiences. Raised in Venezuela, she is passionate about intercultural communications. A graduate of the University of Vermont with a degree in Business Administration, her work experience has encompassed Latin America, Europe, and the US. Cynthia now uses her marketing superpowers to help the greater good. She lives in Chapel Hill, NC, where her son and rescue dog keep her busy.

Linda Gojak

Linda is Past President of the National Council of Teachers of Mathematics. After teaching mathematics in grades 4-8 for more than 20 years, in 1999, she became the first director of the Center for Mathematics Education, Teaching, and Technology at John Carroll University in Cleveland, Ohio. She has received several teaching awards, including the Presidential Award for Excellence in Mathematics and Science Teaching. Linda has authored a series of books on problem-solving for grades 3-6 and is currently completing work on a series for elementary teachers entitled The Common Core Mathematics Companion.

Arjan Khalsa

Arjan is Board President of T2TGlobal. He has a 40-year career in education that includes teaching at the elementary and university levels, researching and developing K-8 products, starting an education nonprofit serving students in Latin America, and founding three educational publishing companies. He is a regular presenter at national and state-level mathematics education conferences where he often reports on his experiences in classrooms around the world. He has served as principal investigator on several federally funded research and development projects.

Leon Lamle

Leon is a full-stack web developer from New York City. He is the co-founder of CenturyClub, an on-premise analytics platform for the beverage industry, and fomerly worked at Compass real estate company. In the past he has worked on large payment systems, as well as a global learning management system that now trains over a million employees. When he’s not writing code, he loves to travel and work on side projects.

Chadd McGlone

Chadd is T2TGlobal’s co-founder and former executive director. Prior to launching T2TG in 2014, Chadd spent fifteen years in the classroom teaching mathematics and science to middle school students. He earned his Bachelor’s Degree in Psychology from Ohio State University and a Ph.D. from the University of North Carolina in Chapel Hill, specializing in math education and statistics. Chadd has served as the president of the North American Study Group in Ethnomathematics. He is happiest either traveling to a new country or exploring a new mountain bike trail.

Jenny McGlone

Jenny is T2TGlobal’s co-founder and current Board Secretary who has a professional background in psychology. She worked in university counseling centers around the US, where teaching psychology was part of her job. From 2010 to 2014, she taught high school psychology at a local school. Jenny earned a Bachelor’s Degree in Psychology from Davidson College, a Master’s Degree in Psychology from Wake Forest University, and a PhD in Counseling Psychology from Ohio State University in Columbus, Ohio. She lives in Chapel Hill, NC, with Chadd in their newly empty nest.

Mary Ollila

Mary is a public school math teacher in the Chapel Hill, NC, area. She came to the education field after a career in fundraising. Originally from Ohio, she graduated from Miami University with a Bachelor’s Degree in Systems Analysis. She has served as development director for a children’s hospital, a medical foundation, and the United Way of both Los Angeles, California, and Columbus, Ohio. Her love for numbers and adolescents led her back to school to earn a middle school math certificate from the University of North Carolina at Chapel Hill. She now teaches full time at Carrboro High School.

Tim Pope

Tim is Past President of the T2TGlobal Board of Directors and Director of Product Management at McGraw-Hill. Previously, he was Vice President of Professional Services at Illustrative Mathematics. He has served as a high school teacher and administrator before leaving the classroom to work in curriculum design and professional development at the Charles A. Dana Center at the University of Texas at Austin. He has traveled on several T2TGlobal programs and led its first team to Kenya. Tim currently lives in Texas with his family.

Arthur B. Powell

Arthur is Professor of Mathematics Education at Rutgers University-Newark in New Jersey, the Associate Director of the Robert B. Davis Institute for Learning of the Graduate School of Education, and directs the Research Group on Communication, Technology, and Mathematics Learning. His research interests include ethnomathematics, critically and socially responsive mathematics education, the subordination of mathematics teaching to learning, and computer-supported collaborative learning. Before his travels began with T2TGlobal, Arthur had taught in Brazil, China, Canada, Haiti, and Mozambique.

Michelle Pratico

Michelle is Treasurer of T2TGlobal’s Board, having served as T2TGlobal’s Executive Vice President from 2017 to 2019. A native Midwesterner, she earned a Bachelor’s Degree in Mathematics from Lake Forest College in Illinois, followed by a Master of Fine Arts in Computer Graphics from the University of Illinois at Chicago. She has been awarded honorary membership in Associated Women in Mathematics. Michelle’s career has focused on the operational side of various businesses, and her interests put her solidly at the forefront of the emerging STEAM movement (Science, Technology, Engineering, Art, and Mathematics).

Steven Rasmussen

Steve is an education professional with a long track record in mathematics education and publishing. Steve was the co-founder and president of Key Curriculum Press, where he worked on software and textbook development. Steve was also president of KCP Technologies, the developer of the Geometer’s Sketchpad software for dynamic geometry, and he worked with school and publishing organizations around the globe on technology initiatives related to mathematics education and inquiry-based learning. Steve has authored mathematics workbooks and served as principal investigator on numerous National Science Foundation projects.

Patrick Scott

Rick is a professor emeritus of mathematics at New Mexico State University, where he has been a faculty member for 19 years. He has been involved in higher education since graduating with a doctoral degree in mathematics education from Teachers College of Columbia University. He was honored with an appointment to the US National Commission for Mathematics Instruction, charged with promoting mathematics education throughout the world. His publications include co-authoring the text Mathematics and Its Teaching in the Southern Americas.