3. Electronic Theses and Dissertations (ETDs) - All submissions
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Item Grade 11 learners' and teachers' conceptions of scientific inquiry in relation to instructional practices.(2013-09-30) Dudu, Washington TakawiraThis exploratory, descriptive and interpretive study investigated the interactions among learners’ conceptions of the nature of scientific inquiry (NOSI), teachers’ conceptions of NOSI and teacher instructional practices when teaching investigations in Physical Science. The participants were South Africa, Grade 11 learners (n= 167) and teachers (n=5), from five schools in the Johannesburg region of South Africa. The schools were conveniently and purposefully sampled. Learners’ and teachers’ conceptions on six NOSI tenets were investigated. These tenets are: difference between laws and theories; difference between observation and interpretation; there is no one method in science; accurate record keeping, peer review and replicability in science; socially and culturally embeddedness nature of scientific knowledge; and the role of human creativity and imagination in the development of scientific knowledge. Data on learners’ and teachers’ conceptions of the NOSI was obtained through; questionnaires, probes and interviews. Teacher instructional practices were determined using laboratory class observations, questionnaires, teacher and learner interviews, and analysis of instructional materials. The data was quantitatively analyzed using mainly, descriptive statistics, correlations, Regression Analysis and Multivariate Analysis of Variance (MANOVA). Qualitative data was analyzed using a combination of analytic induction and interpretive analysis. The results show that learners’ NOSI conceptions were inconsistent, fragmented and fluid, with the majority of the learners displaying naïve conceptions. Teachers were found to hold mixed NOSI conceptions ranging from static, empiricist-aligned to dynamic, constructivist-oriented. Teacher instructional practices were found to be a repertoire of contrasting methodological approaches lying along a continuum ranging from close-ended inquiry to open-ended inquiry. The study found the interactions between and among the investigated variables to be weak and not direct and simple, but complex and under the governance of a variety of factors in the instructional milieu. Curriculum and assessment demands were found to be major factors possibly responsible for weakening the interactions. For the investigated variables, it is posited that the interaction between variables is under the governance of both the context in which the instruction takes place and some factors already embedded in the teacher’s or learner’s conceptual ecology. Recommendations and implications for the practice of science education and future research are raised and discussed.Item Giving feedback in investigative tasks in grade 10.(2010-08-16) Mathenjwa, Lerato JosephineThis study is an action research project where I study my own practice in giving feedback in investigative tasks. The aim is to find ways of improving my feedback by engaging learners in conversation and eliciting misconceptions. The study is framed by a sociocultural view of learning and teaching. The study was conducted in a high school with a class of Grade 10 learners who worked on an investigative task and six lessons were video recorded. Analysis was based on the investigative task, feedback given to learners, misconceptions that arose and conversations that took place during the lessons. The findings are that when developing an investigative task, the teacher should look for mathematical processes that can be developed as learners work on it. I found that I both took up and missed opportunities to work with learners’ misconceptions and that four components of mathematical conversations: questioning, explaining mathematical ideas, sources of mathematical ideas and responsibility were present at different levels in my classroom. On the basis of my findings I make a number of recommendations for my own further practice and for other teachers.Item Factors influencing teachers'choice and use of tasks for formative assessment of mathematics in grades 2-6(2006-10-25T13:15:54Z) Wilson Thompson, BronwenAbstract This study explores teachers’ understanding about ways in which assessment supports learning and teaching within the context of grappling with the new curriculum. It argues that formative assessment, supports a socialconstructivist view of learning and teaching. It suggests that formative assessment functions in a fundamentally different way to summative assessment, and could assist teachers in moving towards a more conceptual approach to learning and teaching. Teachers’ views are explored in focus groups in which teachers discuss their choice and use of either traditional or alternative assessment tasks, in their mathematics lessons. The findings suggest, however, that teachers’ ability to use assessment in this way is influenced by their own views of mathematics learning, their current views of assessment, the amount of support provided in the assessment materials, and the practices of the school. Key words Formative assessment Social constructivist Focus groups Phenomenography Primary school Mathematics Assessment Investigations