Despina A. Stylianou is a Professor of Mathematics Education at CCNY and Director of MitC. Her work explores the mathematical skills, sensibilities and habits of mind and actions that are critical to doing, learning, and using mathematics proficiently. She has received several awards including a Fulbright and a Spencer Dissertation Fellowships, and an Early Career Award from the National Science Foundation. She has authored several articles and books and most recently the Teaching and Learning Proof Across the Grades.

Janan Hamm is a senior mathematics staff developer in New York City schools with Mathematics in the City and an adjunct professor at the School of Education at the City College of New York. Janan left a career as a microelectronics process developer for MIT Lincoln Laboratories to become a mathematics and science teacher at the Murdoch Middle School. She became interested in mathematics instruction in the elementary grades which led her to a position as an instructional coach in mathematics for Boston Public Schools. In Boston she led various professional development workshops for teachers, principals and after-care providers with a particular interest in supporting struggling and special needs students. She was also involved in data analysis and assessment development for the mathematics department before coming to New York.

Nicole Shields is a staff developer for Mathematics in the City. Before becoming a staff developer, she taught for over ten years in upper elementary school classrooms at P.S. 158, which included integrated co-teaching and academic intervention. As a former New York City public school teacher she has been part of Mathematics in the City staff development and looks forward to continuing to help learners develop their understandings of mathematics. She loves exploring creative ways to reach every math learner.

Rachel Lambert is an Assistant Professor in the College of Educational Studies at Chapman University in California. Her research draws from sociocultural and constructivist learning theories, equity in mathematics education, and disability studies in education. Rachel spent over ten years working as a classroom teacher and special educator in culturally and linguistically diverse schools.

Madeline Chang has been a teacher in kindergarten, first, second and third grades in Region 9 in New York City for the past eighteen years. She has also worked as a math consultant for inservice programs in other school districts and began working with MitC in 1995. Her work is also discussed in Young Mathematicians at Work: Constructing Number Sense, Addition and Subtraction written by Cathy Fosnot and Maarten Dolk. She studied as an undergraduate at the University of Michigan and the City University of New York and holds a masters degree from the Bank Street College of Education.

Nina Liu has worked as a mathematics coach in New York City public schools for the last eight years. Before becoming a staff developer, she taught for nine years in early childhood classrooms, at P.S. 234 in Region 9 and at Pound House Children’s Center in Ann Arbor, Michigan. She has been involved with the Mathematics in the City project since 1996. She is a graduate of the University of Pennsylvania and Bank Street College of Education. Prior to becoming a teacher, she worked in magazine publishing. She lives in Brooklyn, New York, with her husband and two children.

Andrew Gael is a math educator and nationally recognized speaker from New York City. He teaches math to students with disabilities at the Cooke Academy in SoHo as well as pre-service teachers at The City College of New York in Harlem. Andrew also works as a consultant for the Illustrative Mathematics curriculum writing team and has been featured in books such as Tracy Zager’s “Becoming the Math Teacher You Wish You’d Had” and Ilana Horn’s “Motivated.”