The scientific literacy of four students in Year 8 was the main focus of one year of participant observer research. An interpretive research methodology was employed to generate tales about each student, in order to provide rich descriptions of the participation of these students in Science classes and in non-Science classes.A major theme was the complementarity of epistemological referents for scientific literacy. Objectivism, personal constructivism and social constructivism were identified as major referents for scientific literacy, and therefore as underpinning factors for the diversity of definitions of scientific literacy. Some authors have called for these referents to complement one another. In this study, I used the conceptual tool of metaphor to facilitate the holding together, in dialectical tension, of these often competing ideas.No a-priori notion of scientific literacy was adopted for the research, but an emergent theoretical framework for scientific literacy evolved. This metaphorical framework was shown to be a viable way of organising a diversity of literature-based definitions of scientific literacy. It was subsequently utilised to interpret the tales about the four students, and helped reveal significant themes.Foremost amongst the emerging research themes was equity of access into scientific literacy. Ten major assertions from the research provide different considerations of the ways that students access, or are denied access to, scientific literacy. Finally, implications of the three-metaphor framework for research, and speculations about its place in informing classroom practice are presented.

This naturalistic study focused on the perceptions of leadership and student performance in science from campus leaders in three purposefully selected secondary campuses of ninth through twelfth grades. Each school had experienced an improvement in student passing rates on the science TAKS test that exceeded the state?s percent improvement in passing rates for the past three years and had a record of improving science TAKS scores for the period of 2003 to 2008 exceeding fifteen percentage points. The qualitative research technique of multi-case studies design was used. Data was collected through semi-structured, in-depth interviews with four campus leaders from each of the selected schools. These campus leaders included campus administrators, science department chairs, and grade-level team leaders. A framework of transformational leadership was utilized in the analysis of the data generated from the interviews. The perception from the campus leaders was that leadership has a positive impact on student success in science. The findings indicated perceptions of leadership from the campus leaders had certain leadership practices in common. These included (a) clear vision and goals from the campus principal, (b) high performance expectations for teachers and students from administrators and science department leaders, (c) encouragement and support from campus administrators and science department leaders to develop new programs to address problem areas, (d) emphasis on collaborative teams, and (e) open door policy from administrators.

In this dissertation, I used survey response data from 385 science teachers situated in 50 randomly selected Texas high schools to describe the prevalence of high school science teacher participation in professional activities and levels of job satisfaction. Using relative risk statistics, I determined the direction and significance of multiple associative relationships involving teachers’ participation in professional activities, satisfaction with working conditions, and retention state. Finally, I used these results to make specific policy recommendations. Teachers participate in diverse professional activities. Descriptive analyses of responses from teachers revealed higher rates of participation in development activities than in maintenance or management activities. Relative risk statistics exposed several positive and significant associative relationships between participation in specific professional activities (i.e., observation of other science teachers, involvement in a science education study group) and teacher retention. Additionally, results of risk analyses suggest teacher participation in maintenance activities, more than development or management, is associated with teacher retention. Researchers consider job satisfaction an important factor in teacher retention. Descriptive analyses revealed high rates of satisfaction with occupational choice and the interpersonal relationships shared with professional colleagues and administrators. Conversely, teachers expressed low rates of satisfaction with their school’s science laboratory facilities and equipment or support for student involvement in informal science activities. Results of risk analyses exposed no positive associations between job satisfaction and retention for teachers. The interaction between teacher participation in professional activities and satisfaction with occupational choice was also examined. Descriptive analyses of responses from retained teachers (n=291) revealed high rates of participation in development activities in comparison to maintenance or management activities. Results of risk analyses exposed both positive and negative associations between teacher participation in professional activities and satisfaction with occupational choice, suggesting an interactive effect exists between participation in activities and satisfaction with occupational choice on retention. I used results from analyses to make state and school level policy recommendations, which included: (a) development of state standards for classroom equipment and facilities; (b) greater state involvement in defining teacher professional activities; and, (c) increasing school support for teacher participation in maintenance activities.

In the USA, science teachers are challenged by the National Science Education Standards (NSES) to "select teaching and assessment strategies that support the development of student understanding and nurture a community of science learners" (NRC, 1996, p. 30). While standards do not explicitly refer to constructivist learning theory, they are entirely consistent with the view that knowledge is a human construction, learning is based on prior knowledge, and students respond to their environment to build new understandings. Paralleling the NSES reforms, with their constructivist underpinnings, there is also a strong and often contradictory pressure on teachers to prepare students for national and state standardised tests. The need for teachers to balance these competing demands while trying to teach for understanding sets the context for this research.The purpose of this research has been to focus on "how" teachers determine students' understanding and "why" they employ the instructional and assessment strategies that they do. Interpretive case studies of five teacher participants from one school district are used to describe how these teachers teach for understanding in the face of the competing pressures of conforming to the NSES and preparing students for success on standardised multiple-choice achievement tests. These case studies are analysed to identify common themes and propositions about teaching for understanding.The teachers in this study used a variety of instructional and assessment strategies. Their choices of strategies made a difference in the degree of understanding that their students achieved. Frequently, the teachers' decisions were affected by their grasp of science concepts and ideas about how students learned. When teaching for understanding, these teachers preferred informal knowledge of student understanding to that obtained from standardised ++ / tests Although subjected to conflicting pressures regarding how teachers were able to disregard assessments that did not provide evidence of student understanding. This research has implications for the five teacher participants, myself as a researcher, the district as a whole and educators with an interest in implementing assessment strategies that foster student achievement for understanding.

Constructivist learning theory is based upon the tenets that students come to learning experiences with prior knowledge and experiences that the learner will choose from to make sense of the present situation. This leads to a mixture of understandings among students. This study proposed to reveal students‟ understanding of atomic structure and cell structure as well as the relationships between atoms and cells. High school students from one private school participated in a paper-and-pencil test to uncover conceptual understanding and content knowledge of atoms and cells. The 120 participants were from grades: 9 (13m, 15f), 10 (9m, 20f), 11 (21m, 17f), and 12 (17m, 8f). All 120 students took the paper-and-pencil test and 16 students (4 per grade) participated in a follow-up interview. Drawings were analyzed by individual characteristics then using groups of characteristics models classes were formed. Openended questions were scored holistically by rubric scores and then deconstructed into individual content statements. A limited number of findings follow. Students were more likely to draw a Bohr model. Freshmen were less likely to indicate living materials contained atoms and more likely to indicate forms of energy contained atoms. As students progressed through high school, details included in cells decreased. Students failed to recognize that the sum of the products from cell division will be larger than the original cell due to the two growth periods included in the division cycle. Students were often able to provide the correct yes or no answer to are atoms and cells similar, different, or related but the follow-up answers often included non-scientific conceptions. Recommendations include implementing instructional strategies that promote long-term retention of conceptual understanding and the underlying content knowledge. Design evaluation methods to monitor student understanding throughout a unit of study that go beyond traditional closed-ended questions. Many limitations related to this study suggest that results should not be generalized beyond the targeted population.

The first purpose of this case study was to understand the course development experiences of Grade 10 French Immersion (FI) Science teachers in Manitoba. The second purpose was to develop an online instructional resources database model based on an understanding of these teachers’ course development experiences that holds promise in supporting Grade 10 FI Science teachers in Manitoba. Results of this study revealed that teachers’ experiences are negatively impacted by equity issues, such as a lack of resources in French designed to address the Manitoba curriculum. These equity issues negatively impact teachers’ well-being. In turn, these equity issues for teachers, as well as the impacts of these issues on teachers’ well-being, have negative impacts on the quality of FI education in Manitoba. An online instructional resources database model, entitled the Living Curriculum model, was developed. / May 2017

In some classrooms, teaching methods have evolved little over the years. Enrolments in subjects like science have progressively declined and the persistent use of traditional teaching methods has often been held responsible for this. In less than a decade, the Internet has emerged as a potential tool to vary classroom routines, however, its use in high school science classrooms is still in its infancy. In this study, Getsmart, a website was developed and implemented in junior science and senior physics classrooms in a blended learning environment in a Queensland State High School. The study had three main objectives amongst others. The first aim was to study the impact of such an environment on students' perceptions. Secondly, the impact of such an environment on students' attitudes towards physics and junior science was studied. Finally, the research sought to investigate the effect of such an environment on their learning outcomes. Getsmart was developed on the principles of cognitive apprenticeship teaching model (Collins, Brown, & Newman, 1989). During the research phase, the website was accessed by students once a week during class time. They also had the option to login in their own time at school (e.g., morning tea, lunchtime, before and after school) and at home. The research was conducted as a case study over two years and during this time, 406 students in junior science and physics participated. Students' perceptions of their learning environment were ascertained through quantitative and qualitative methods. Quantitative data were collected by using a modified version of the Web-based Learning Environment Instrument (WEBLEI) (Chang & Fisher, 2003). / Qualitative data on student's attitudes were gathered through emails and Written surveys. An Attitude to Science survey was developed to determine students' attitudes towards their subjects. Qualitative data were also gathered through written surveys. The impact of such an environment on students' learning outcomes was determined through the analysis of their exam results achieved before and after experiencing web-based learning. Their results were also compared with the results of similar cohorts in previous years. Amongst other findings, it was found that the modified version of the WEBLEI was a valid and reliable instrument for use in junior science and physics classes. The study also established that students had positive perceptions of a blended web-based learning environment and that such an approach had a positive influence on students' attitudes towards their subjects. The study also found that web-based learning improved their performance across various performance domains of junior science and senior physics assessments.

Professional development (PD) is used as the primary means for ensuring the continued learning of teachers. PD opportunities and support vary in type and quality. Little is known about the participation in and support of PD for high school science teachers. The establishment of supportive professional cultures provides a means to support teachers' PD in addition to providing meaningful interactions between teachers to improve practices related to teaching, learning, and assessment. Even less is known about patterns of relationships between professional culture with high school science teachers and students. PD and professional culture have been reported to increase teacher retention and student achievement. The studies presented in this dissertation use mixed methods approaches to explore data collected by the Policy Research Initiative in Science Education Research Group during the 2007-2008 academic year. The first study assessed PD of high school science teachers from two perspectives: (1) teachers' participation in PD, and (2) schools' practices to support teachers' participation. Teachers' participation was determined using self-reported survey data. Schools' PD support was operationalized using data collected from administrative interviews. Descriptive statistics revealed little relationship between teachers' participation in PD, schools' PD support, and teacher retention. Descriptive statistics of schools' PD support indicated associations with student achievement. The second study operationalized school science professional culture with a rubric developed for the study. Elements within the rubric addressed many components mentioned in the literature as indicative of positive professional culture. School science professional culture had little relationship with either teacher retention or student achievement. Strong associations were found among the elements associated with school science professional culture. These results provide support for the inclusion of these elements in future studies of school science professional culture. The final chapter provides a summary of both studies. Recommendations are made for improving policies in place to support PD and professional cultures experienced by high school science teachers. Specific attention should be directed at the development of cohesive PD programs that address both schools' and teachers' needs. Additionally, more opportunities for in-depth communication regarding school practices for teaching, learning, and assessment need to be provided.

The study has a twofold purpose. The first is to compare the priority order of the seven fundamental areas of skill among the three sample groups, The second is to compare the differences between actual and ideal teacher performance in the seven fundamental skill areas. The conclusions are generalizable only to the population of Texas teacher educators, members of the Texas Science Supervisors Association and members of the Science Teachers Association of Texas, All of the groups had basic agreement as to the priority order of the science teacher competencies being demonstrated by teachers, The profession's success in educating teachers in the content areas is reflected by the priority of the rankings. The position of the science supervisors' ratings of teacher performance between teachers and teacher educators indicated that supervisors have the most accurate view of teacher performance, The least discrepancy among groups occurred in the ideal rating of teacher performance, indicating general agreement as to the level at which teachers should be demonstrating skills, The greatest discrepancy occurred in the identification of actual level of teacher performance.

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