This study used video vignettes of historical episodes from documentary films as a context and instructional tool to promote pre-service science teachers' (PSTs) conceptions of the nature of science (NOS). The participants received explicit-reflective NOS instruction, and were introduced to techniques to be able to use scenes from documentary…

Background: The literature contains very few studies that focused on evaluating the impact of professional development activities on student learning. And, many of these studies failed to determine whether the professional development activities met their primary goal--to improve the learning process. Purpose: The purpose of this study was to use…