Two related case studies of secondary mathematics teachers examine the roles and conditions helpful in initiating, directing, and/or supporting teachers' own professional development. Using multiple data sources from school-based and professional settings, we applied analytic induction to identify patterns of similarities and differences in…

Outcomes of a teacher-teaming program that was implemented among seventh-grade teachers at a Florida middle school are described in this practicum report. Training sessions on effective teaming practices were initiated to address the lack of effective teaming practices among the seventh-grade teachers. Eight seventh-grade teachers participated in…