Teachers are required to constantly change their pedagogy throughout their career, either in response to new theoretical approaches or new technological innovations. It is a profession that is characterised by dynamism and constantly strives to advance its practices to improve outcomes in student learning. However, current professional development programs are seen to be failing to meet the needs of the teachers, students and education policy. Research has shown (Huberman, 1995; Richardson, 1990), there has been little discernible change in teaching practice from current professional development programs, thus an alternative solution is needed. The premise underlying this study is that the use of online communities of practice may present a solution to the failure of current professional development programs in effecting change to teaching practice. Thus it is the intention of this thesis to investigate if online communities of practice can realise this potential. The research was conducted within the paradigm of qualitative analysis. The study was conducted as a multiple explanatory case study also known as a collective case study (Yin, 2003) and this approach reflects the current shift in trends of research in education. As Richardson (1994) stated, it has shifted &quotfrom a focus on effective behaviours toward the hermeneutic purpose of understanding how teachers make sense of teaching and learning" (p. 5). The approach used in this thesis provided insights into the value of online communities as authentic contexts for supporting professional development particularly in relation to relationships, communication and collaboration between teachers around professional inquiry, problem solving and emotional aspects of teaching. The results of the study show that online communities of practice are a valuable source of continuous professional development for teachers. They have the ability to provide support as teachers accommodate the constant changes and the need to acquire new skills and knowledge. The strength of this method of PD lies in its ability to be self-sustaining and generative. Teachers have access to authentic, relevant and flexible learning that is not constrained by time and can be accessed according to members needs.

The purpose of this study was to identify essential features of Epistemic Orientation toward Teaching Science (EOTS) and to explore the relationships between EOTS and instructional practices. This study proposes a new concept, EOTS: defined as a teacher's set of interrelated beliefs that are developed and used when teaching science, and are shaped by the Nature of Knowing in General, the Nature of Knowing in Science, the Nature of Learning, and the Nature of Teaching. The essential elements of EOTS were identified through a comprehensive literature review and refined through a multiple-case study. The participants of the study were three exemplary fifth grade teachers who had been implementing an Argument-based Inquiry (ABI) approach, called Science Writing Heuristic (SWH), for more than three years and were highly devoted to encouraging their students to engage in science practices addressed in Next Generation Science Standard. Data were collected from multiple sources including semi-structured interviews, Video-Stimulated Recall interviews, classroom observations, researchers' field notes, and classroom artifacts. Data was systematically coded, and each belief and practice analyzed in-depth. The results identified eleven interconnected beliefs held in common by all three teachers. Among the eleven elements, How to Learn was the core belief that was most connected to the others and also aligned well with the Source of Knowing, How to Learn, Evidence-based Argument, and How to Teach; this idea established a strong structural foundation for the EOTS. In addition, some elements were explicitly presented when the teachers made instructional decisions, while others were only presented implicitly. In addition, prominent patterns of instructional practice were evident across the three cases. The teachers did not plan how to teach in advance, rather they made instructional decisions based on their epistemic orientations. In particular, they emphasized a conceptual understanding of the big ideas in science by making connections between students' ideas and the big ideas in science. Constant negotiation (construction and critique) was another pattern observed throughout the lessons. In creating effective learning conditions for conceptual understanding and constant negotiation, teachers used language practices and social, group-work as epistemic tools to help students construct and critique knowledge. Moreover, physical resources, such as physical materials and time, were used in a way that encouraged students to engage in science practice. More importantly, the way in which classroom practices and dialogue were managed relied heavily on the essential elements of ETOS. Specifically, How to Learn and Control of Learning influenced the student-centeredness of their instructional practices. This study provides several implications for teacher education and research. Teacher-education programs should focus energy on shaping teacher ideas about learning, and address the epistemic foundations of science practices. Further investigation into the essential elements of EOTS, and the relationship between these elements and instructional practices must be pursued with diverse subjects, contexts, and methodologies, to develop a fuller understanding of how these elements work as a whole.

To provide quality education to all students, including ELLs, teachers need professional development designed and enacted according to best practice. However, a common problem for professional development is that teachers' practices often do not change. Implemented through the partnership collaboration with university, education, and public school faculty, the professional development designed in this study focused on educating teachers about needed content and engaging them in ways that would increase the likelihood they would enact such practices in their classrooms (Desimone, 2009; Opfer & Pedder, 2011; Penuel et al., 2007). The professional development program comprised six courses that adhered to the Utah State Office of Education's standards for the education of the teachers of ELLs. The study examined the teachers' beliefs and their classroom practices. A total of 197 teachers were surveyed on their beliefs toward teaching ELLs, and a subset of 23 teachers' classroom practices were videotaped. Factor analyses were conducted on the pre- and post-survey. The videos were coded using a protocol based on the SIOP model (Echevarria et al., 2013), and latent variables were created to measure the change of the survey score and practice score. The analysis revealed that teachers' beliefs or knowledge in particular changed from when they began the course of second language acquisition to the time they completed it. In addition, teachers' practice changed from the time they started the professional development program to the time they completed it. However, even though teachers' beliefs and practices changed, there was no correlation found between the belief change and the practice change. This study adds to the literature that educating teachers about second language learning and research-based practices (Baker et al., 2014) using professional development that attends to teachers' practices as well as their beliefs (Desimone, 2009; Opfer & Pedder, 2011; Penuel et al., 2007) resulted in positive changes in teacher's beliefs and practices for teaching ELLs. Future research should add a variable of teacher's beliefs about the context of their teaching practice into the study for this can be a confounding variable that affects the correlation between the change of beliefs and the change of practices.

The field of literacy education has long been concerned with the question of how to help classroom teachers improve their practices so that students will improve as readers. Although there is consensus on what characterizes effective professional development, the reading research on which this consensus is based most often is small scale and involves direct support provided by university faculty. The South Carolina Reading Initiative is an exception: It is a statewide, site-based, large-scale staff development effort led by site-selected literacy coaches. Although university faculty provide long-term staff development to the coaches, the faculty are not directly involved with the professional development provided to teachers. In this study we sought to understand whether site-based, site-chosen literacy coaches could help teachers' beliefs and practices become more consistent with what the field considers to be best practices. To understand teacher change, we used two surveys (Theoretical Orientation to Reading Profile, n = 817; South Carolina Reading Profile, n = 1,005) and case study research (n = 39) to document teachers' beliefs and practices. We also had access to a state department survey (n = 1,428). Across these data, we found that teachers' beliefs and practices became increasingly consistent with best practices as defined by standards set by the South Carolina State Department of Education, standards that were consistent with national standards. This suggests that large-scale staff development can affect teachers when the providers are site-based, site-selected literacy coaches.

Bringing about positive teacher change in physical education is often a slow process not supported by traditional professional development practices. The purpose of this study was (a) to assess the usage and satisfaction with the online site PE Central and (b) to ascertain whether PE Central constitutes a valid source of professional development leading to changes in teaching practices and student learning outcomes. Participants (45 pre-service and 288 in-service teachers) completed an online survey assessing the effects of using PE Central on their perceptions of usage, satisfaction, professional development, teacher change, and student engagement. Results indicated no significant differences between pre- and in-service teachers in usage and satisfaction of PE Central, but that on average the sample population uses it monthly and are more satisfied than not with the site. Results further indicated that PE Central is positively related to provisional and permanent teacher change and increased student engagement. However, the researcher recommends changes in order for the site to become a viable professional development option for teachers.

The purpose of this study was to explore the connection between a teacher's perceptions and attitudes of change and the impact of those perceptions and attitudes on the implementation of professional development strategies and techniques. This research also explored which factors motivate a teacher to change. A final consideration of this research is the issue of how the results of change are analyzed. The design of this study was a qualitative format with a phenomenological approach. The sample population consisted of twelve teachers from four states. The teacher sample was drawn from districts who were addressing the issue of No Child Left Behind in the form of professional development training that focused on the implementation of data collection technique to monitor student learning and improvement. Data was collected from interviews, observations and artifacts. The teachers identified the three key factors of student achievement, administrative support and colleague support as having a profound effect on; (1) motivating the participants' to initiate change, (2) the implementation of a change process and (3) the analysis of change results. While change is a personal experience based on many individual and collective factors, these three themes emerged as significant factors for the implementation of new knowledge and the change process. Through the teacher's descriptions of the complex professional change process, the significant findings of this study were the overall impact of student achievement, administrative support and colleague support. It is the balance and variation among these three factors that enhanced and/or impeded the implementation of new knowledge and may be central to understanding a critical influence on the attitudes and perceptions of change and their impact on the implementation of new knowledge.

This qualitative research study examines the holistic experience of secondary classroom teachers who are changing their predominant instructional technique from a mostly traditional teaching method to a student-centered, problem-based approach to curriculum delivery. Using field notes, interviews, focus groups, observations of classrooms and faculty meetings and related document study in conjunction with, and as driven by, simultaneous analysis, the researcher inquired about the nature of implementing change in instructional delivery and those influences that both help and hinder the process. Data revealed four categories with related findings: practices of changing instructional delivery, a teacher focus on students, elements of working within a culture of change, and the personal experience of implementing a change in instructional delivery.

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This study is a qualitative inquiry of eight mid-career second language (L2) teachers’ identity evolution. These teachers have or had full-time or tenured teaching experience in secondary schools in Japan. Since they were mid- and later career teachers, they have explored their development, what they are now, and why they keep growing. They have all made meaningful voluntary changes in their professional lives. To make meaningful voluntary changes at moments of transitions, the teachers have made choices and negotiated, or juggled, their identities. They are successful teachers who have tenaciously pursued what matters to themselves professionally throughout their lives. One unfilled niche in the L2 teacher development and education is research on redefining L2 teachers who began their careers in secondary education in Japan, make meaningful voluntary changes in mid-career, and make apparently difficult work situations negotiable. The three purposes of this study are to (a) explore why and how L2 teachers’ identity evolution and their professional growth at mid-career happen; (b) learn more about the complexity of teacher change mechanisms at mid-career, and; (c) highlight ways that teachers whose professional development has stalled can grow out of their stagnation by examining the lives of successful mid-career and later career teachers. Eight L2 teachers participated in this study, recruited between 2005 and 2010. Interviews are the main source of data collection. I triangulated the data with email exchanges, class visits, and public documents such as Curriculum Vitae, syllabi, and curriculum descriptions given to students in a current or former class, handouts used in class, and published research articles. The data analysis was grounded in Riessman’s (2008) thematic and structural narrative analysis for identity evolution. Using these frameworks, I analyzed the data by(a) looking for stories and events in the telling as well as searching for identity negotiation and evolution with the participants with thematic analysis, which applied to all the participants, and (b) seeking contextual, discursive, and interpersonal cohesion and meanings with structural narrative analysis, which was applied to one participant. What each participant deemed important determined what kind of L2 teacher they wanted to become. With their efforts to keep evolving as L2 teachers through reflection, action, and negotiation they became consciously aware of what mattered to them. Their conscious awareness prompted them to exercise agency to plan meaningful changes. / Teaching & Learning

This case study instantiates longitudinal change over a two year period by examining the role of School Situated Sustained Professional Development (SSSPD) on the evolution of the participant's practice. The participant was a secondary science teacher who emerged as an exemplar in integrating Technology Enhanced Formative Assessment (TEFA) pedagogy into her practice, which was facilitated by personal response systems (PRS). The research question was: What could be revealed about the impact of SSSPD by studying teacher learning of a teacher who emerged as an exemplar? The participant was one of ten teachers learning the TEFA pedagogy. Professional development (PD) that facilitates change in teachers' practice and that sustains those changes over time is critical. Findings were triangulated from seven quantitative and qualitative data sets including monthly surveys, lesson observations, journal entries, interviews and action research sessions. The major findings of the study were: (1) implementing TEFA led to changes in the participant's practice, and (2) the SSSPD model was instrumental in the participant learning how to implement TEFA. Findings also revealed changes in the participant's beliefs, teaching strategies and in her modification of TEFA. Eight elements of teacher change were identified which were used to develop the Elements of Teacher Change in Adoption of Pedagogy (ETCAP) model. Gaining a better understanding of the SSSPD model and its potential as an effective model for PD is dependent on proving its effectiveness in promoting teacher change and sustaining that change over time.