This article provides robust empirical evidence for the association between science teachers' pedagogical content knowledge (PCK) and student achievement. Unlike previous studies, we employed two approaches (text-based vs. video-based tests) to assess if, and to what extent, teachers' PCK assessed by these two approaches are related to student…

Teachers need technology-related knowledge to effectively use technology in the classroom. Previous studies have often used self-reports to assess such knowledge. However, it is questionable whether self-reports are valid measures for this purpose. This study investigates how mathematics teachers' self-reports correlate with their scores in a…