We posit that professional development (PD) models fall on a continuum from highly adaptive to highly specified, and that these constructs provide a productive way to characterize and distinguish among models. The study reported here examines the impact of an adaptive mathematics PD model on teachers' knowledge and instructional practices as well…

The concept of mentoring is defined in its classical, historical and current contexts. These definitions are critiqued and a new, far-reaching definition is offered. Five functions of mentoring are described and the roles within each function are discussed. (JL)