The Florida Department of Education (FDOE) identified increasing the graduation rate of students with disabilities and decreasing the graduation gap between students with disabilities and all students as its state-identified measurable result (SIMR). To make progress toward the SIMR, the state sought to build the capacity of local education…

This paper introduces a variation on the post-test only cohort control design and addresses questions concerning both the methodological credibility and the practical utility of employing this design variation in evaluations of large-scale complex professional development programmes in mathematics education. The original design and design…

This article describes experiences from a professional development project designed to prepare in-service eighth-grade mathematics teachers to develop, explore, and advance technological pedagogical content knowledge (TPCK) in the teaching and learning of Algebra I. This article describes the process of the participating teachers' mathematical…