This research investigates the relationship between educators' Pedagogical Content Knowledge (PCK) and student achievement in mathematics. As education continues to evolve, understanding how teachers' specialised knowledge impacts the effective transmission of mathematical concepts is crucial. This study explores the role of PCK in influencing…

The purpose of this two-phase, sequential explanatory mixed-methods research study was to examine the correlation between kindergarten through fifth-grade teachers' self-efficacy and the impact on literacy achievement to determine how professional development (PD) positively impacted teachers with high self-efficacy. The study was conducted in a…

Teachers' mathematics pedagogical content knowledge (MPCK) is a necessary component for mathematics achievement. Despite the importance of this component, some teachers demonstrate limited knowledge of how best to facilitate mathematics instruction. The problem addressed through this study was the consistently low mathematics achievement of Grade…

It is of great importance that science educators teach COVID-19 and related pandemics to boost students' scientific literacy. A mixed methods research design (pre-post test instrument [N = 86] and semi-structured interviews [N = 11]--August 2020 to June 2021) evaluated the ability of an intervention (12 h, three-session, 3-day, online workshop) to…

Though wrought with challenges, the COVID-19 Pandemic, which led to the closure of schools worldwide and forced educators into a rapid transition from traditional to Emergency Remote Teaching (ERT), held some promise for furthering the integration of digital technology in schools. But now, years following the crisis, policymakers, administrators,…

We analyzed item responses provided by a nationwide sample of 990 in-service U.S. middle grades mathematics teachers to a novel survey focused on fraction arithmetic. The survey targeted four components of reasoning in terms of measured quantities: "Referent units," "Reversibility," "Partitioning and iterating," and…

Video observation and content analysis are used to make a "quantitative-qualitative" analysis of English teachers' teaching behavior reflected in English classroom teaching videos, and to accurately describe, analyze, and summarize the characteristics of English teachers' teaching behavior from various aspects. Based on this, this study…

Based on the novel framework of Academic Agency, this study explored how a teacher's sense of efficacy, commitment, and knowledge influenced their overall sense of responsibility in instructing all children in the science of mathematics. This study employed a two-phase data collection process in which surveys, classroom interviews, and…

Creativity has gained prominence as an important skill for citizens in a rapidly-changing, hyperconnected world. This study introduces and attempts to understand a new construct--"creativity for teaching" ("CFT")--which captures how teachers apply their own creativity. Education researchers largely eschew the term…

This study investigated effects of school levels and years of teaching on the teacher's perceived competency of teaching English using an English subject-specific competency (ESSC) inventory of five constructs: language proficiency (LP), cultural teaching (CT), grammar translation teaching (GTT), communication skills teaching (CST),…

Purpose: Teacher content knowledge (CK) and its contribution to student achievement (SA) are understudied in physical education, especially concerning the examination of the effectiveness of professional development (PD) programs using direct measures of teachers' CK and SA. To make progress in this research area, this study investigated the…

Pedagogical content knowledge (PCK) is central to teachers' professional knowledge impacting student learning and thus is considered a key attribute of teacher quality. Teacher quality is often indirectly examined by proxy measures such as degrees, certification, and teaching experience. To date, little is known how those proxy measures are…

We examined the effects of a professional development (PD) with coaching model designed to improve literacy and co-taught instruction for students with and without disabilities in co-taught content-area middle school classes. Eleven co-teaching pairs in nine schools were randomly assigned to the Content Area Literacy Instruction (CALI) condition…

This dissertation investigates the inequitable distribution and causal impacts of mathematics teachers' content knowledge for teaching (CKT) on instructional quality and student learning outcomes. Using the rich information in the Measures of Effective Teaching (MET) project longitudinal database, the study addresses three core research questions:…

The relationship between teacher quality and student achievement is often at the heart of educational debates about student success. In this study, we leverage data from the National Assessment of Educational Progress (NAEP) to explore relationships between geography achievement in the 8th grade and various indicators of teacher quality. We found…