Antonia Cameron is the CEO and co-founder of reimaginED, a coaching organization devoted to improving teaching and learning in mathematics.Her current interests are on revitalizing early childhood math learning as well as finding ways to develop transformative feedback cultures in schools. As part of this work, she is facilitating learning communities focused on (1) the role of the principal in providing effective feedback; (2) the power of the teacher-student conference (helping teachers develop ways of conferring with students to allow for productive struggle); and, (3) the role of coaching in developing teacher leadership and leadership networks. Her recent publication,Agents of Change, How Content Coaching Transforms Teaching,co-authored with Lucy West, is used nationally as a tool to mentor coaches and other leaders.Toni has served as Co-Director withCathy Fosnot of Mathematics in the City (MitC), a national center forprofessional development at CityCollege of the City University of NewYork.As co-principal investigator of an NSF-funded project, sheco-authored the fifteen facilitator-guides that were part of theYoung Mathematicians at WorkCD-ROMs. She and her colleagues cultivated an extraordinary capacity to develop student learning in the teachers they coached. Inaddition, she co-authored two units (“Games”and“Muffles' Truffles”) inthe curriculum,Contexts for Learningpublished byHeinemann.Toni is in demand as acoach of coachesbyeducational coaches across the USA and Canada. She has presentednationally andinternationally at such conferences as NCSM, NCTM, AMTE, NSDCand ICME.@metamorphtlc