A dissertation submitted to the Faculty of Science, University of Witwatersrand, in fulfilment of the requirements for the degree of Master of Science. Johannesburg, 10 October 2016. / This research explores the potential influence of Life Sciences teacher curriculum support materials on unscientific ideas about evolution by natural selection. The Curriculum and Assessment Policy Statement document, seven learner Life Sciences textbooks and their seven teacher guides were investigated by content analysis to find out firstly, the nature and extent of misconceptions about evolution; secondly, the nature and extent of latent problems associated with the topic of evolution; thirdly, the extent to which the Grade 12 Life Sciences textbooks pointed out common misconceptions and went on to provide the correct scientific explanations to counter the misconceptions; and fourthly, the extent to which teacher guides address teachers’ pedagogical content knowledge (PCK) for teaching the topic of evolution by a) pointing out common misconceptions; b) providing the correct science to counter a specific misconception; c) pointing out pre-requisite knowledge which ought to be learnt first in order to understand the topic of evolution; d) pointing out typical difficulties students encounter when learning the topic of evolution. The Grade 10 and 11 textbooks and teacher guides were analysed for fragmentation and sequencing by use of a checklist. The results show the presence of manifest errors and latent problems in the CAPS document, textbooks and teacher guides. The CAPS document had one manifest error and five instances of latent problems. The section on alternatives to evolution was judged to be a manifest error because religious ideas are not regarded as science by the scientific community. The manifest error found in the CAPS document was also found in the textbooks and teacher guides. Frequent manifest errors occurred in the textbooks, averaging 11 per publisher. The CAPS document had fragmented evolution ideas and probably because textbook authors use this document to write their books, the evolution content in textbooks was also found to be fragmented. Whilst some of the teacher guides were found to address the issue of teacher PCK for teaching the topic of evolution in different ways, some of them were found to be deficient in that respect. The presence of latent problems across all the three curriculum support materials investigated is a cause for concern. Latent problems are problematic if not handled with care because they pose a risk of being misinterpreted, and this may in turn cause the development of evolution misconceptions. An investigation of whether the unscientific evolution ideas in the curriculum documents actually influenced learners’ evolution ideas was not part of this study. However, because textbooks are generally considered as authoritative sources of knowledge upon which teachers and students rely, the presence of misconceptions in these curriculum support materials poses a risk that users of such documents could pick up these misconceptions during teaching and learning. The study highlights the need for a multifaceted approach involving all relevant stakeholders (teachers, authors, publishers and the Department of Education officials) working together in an attempt to address the problem of evolution misconceptions in the Life Sciences curriculum support materials. / TG2016

M.Ed. (Science Education) / The South African current school curriculum, namely the National Curriculum Statement, is underpinned by outcomes-based education. The subject Biology (in the Nated 550 curriculum) has been changed to “Life Sciences” and the learning outcomes for Life Sciences are representative of the four themes of the Nature of Science (NOS), namely, science as a body of knowledge, science as a way of investigating, science as a way of thinking, and the interaction of science technology and society. The many changes made from the previous curriculum that accompanied the new curriculum left many teachers reliant on textbooks to plan, guide and inform their teaching and learning activities in the classroom. My study is concerned with the representation of the NOS in Grade 10 South African Life Sciences classrooms. I have conducted my study in two phases. The purpose of Phase One was to analyse three Grade 10 Biology textbooks and three Grade 10 Life Sciences textbooks for the representation of the NOS. A qualitative content analysis methodology was used in the analysis of textbooks, and my study adopted a textbook analytical tool designed by Chiappetta, Sethna and Fillman (2004), using the four broad NOS themes of the mentioned above. The purpose of Phase Two of the study was to observe how teachers use Life Sciences textbooks in their teaching in order to infuse the NOS. A qualitative interpretive case study was the selected methodology for this part of the study. Three practicing Life Sciences teacher-participants were invited to an in-depth interview and a lesson observation each. The lesson observations and the interviews were audio-taped and transcribed. The open-coding method was used where the predetermined codes of the NOS were assigned to extracts of the transcriptions. Qualitative data analysis techniques based on the principles of Framework Analysis (Ritchi & Spencer, 1984) were used in Phase One and Phase Two of my study. There are five steps in Framework analysis, namely, (i) familiarization, (ii) identification of a thematic framework, (iii) indexing (open-coding method), (iv) charting, and (v) mapping and interpretation.