This study explored three aspects related to ESL students in a mainstream grade 11 biology classroom: 1) the nature of students' participation in classroom activities, 2) the factors that enhanced or constrained ESL students' engagement in social interactions, and 3) the role of language in the learning of science. Ten ESL students were observed over an eight-month period in this biology classroom. Data were collected using qualitative research methods such as participant observation, audio-recordings of lessons, field notes, semi-structured interviews, short lesson recall interviews and students' written work. The study was framed within sociocultural perspectives, particularly the social constructivist perspectives of Vygotsky (1962,1978) and Wertsch (1991). Data were analysed with respect to the three research aspects. Firstly, the findings showed that ESL students' preferred and exhibited a variety of participation practices that ranged from personal-individual to socio-interactive in nature. Both personal-individual and socio-interactive practices appeared to support science and language learning. Secondly, the findings indicated that ESL students' engagement in classroom social interactions was most likely influenced by the complex interactions between a number of competing factors at the individual, interpersonal and community/cultural levels (Rogoff, Radziszewska, & Masiello, 1995). In this study, six factors that appeared to enhance or constrain ESL students' engagement in classroom social interactions were identified. These factors were socio-cultural factors, prior classroom practice, teaching practices, affective factors, English language proficiency, and participation in the research project. Thirdly, the findings indicated that language played a significant mediational role in ESL students' learning of science. The data revealed that the learning of science terms and concepts can be explained by a functional model of language that includes: 1) the use of discourse to construct meanings, 2) multiple semiotic representations of the thing/process, and 3) constructing taxonomies and ways of reasoning. Other important findings were: talking about language is integral to biology teaching and learning, ESL students' prior knowledge of everyday words does not necessarily help them interpret written questions on worksheets, and ESL students' prior knowledge of concepts in their first language does not necessarily support concept learning in the second language.

In the context of ecological crisis and environmental deterioration, teaching about environmental issues and the preservation of the world’s environment has become increasingly important across the globe (Chi-chung Ko & Chi-kin Lee, 2003). Of the various subjects taught in secondary schools, Science is often perceived as one that can make a significant contribution to environmental education. It is in this light that the study has looked at how Grade 11 and 12 Biology teachers in the Namibian context implement Environmental Learning (EL). This study was constituted as a case study of two schools in Windhoek, in the Khomas region. The study investigated the implementation of EL in the Biology curriculum focusing on the constraints and enabling factors influencing the implementation. This study employed qualitative methods, specifically semi-structured interviews, classroom observations and document analysis in its investigation of EL implementation. Purposive sampling was done and piloting of interview and observation schedules was used to refine the schedules. Ethical issues were taken into consideration throughout the study. The key findings from the study are as follows: - Teachers’ knowledge and interest in environmental education influence how teachers facilitate EL; - There is a mismatch between EL theories and practice; - Teaching of EL is mainly informed by the syllabus and not other curriculum documents, - Current assessment policy and practice impact on EL; and - Possibilities exist for improving EL in Namibia’s Biology curriculum. These key findings have been used to make recommendations for the study which are as follows: - Strengthen the subject content and interest of teachers; - There should be a match between EL theories and practice; - Reorient curriculum documents and other learning support materials used for EL; - Change in assessment approaches; and - Translate constraints of EL into enablers. The study concludes by calling for further research into EL pedagogies. This can be used to improve EL implementation in the region where the study was situated.

South Africa needs an economy which is competitive and successful. Therefore, it is important that an education system will provide a skilled work force. Learners need to develop biology skills that will equip them for life, enable them to solve problems and think critically. Unfortunately South Africa is presently encountering a lack of skilled citizens. The reasons for this most probably is that the biology curriculum is mainly discipline-based, content-loaded and largely irrelevant, resulting in learners not furthering their studies in biology and related fields. The biology matriculation examination has a strangle hold on what is taught. Lengthy, content-loaded curricula emphasise the memorising of facts by means of expository teaching methods, leaving little opportunity to teach the application of information and skills to solve problems in real life situations. The teaching methods of biology are thus not sufficiently stimulating and motivating. Biology teaching should not only concentrate on facts or explain facts to learners, but should also concentrate on ways or processes by means of which these facts can be obtained. To implement a process approach where learners can develop basic- and integrated skills is not an easy task for those involved. The empirical research of this study, confirmed the findings throughout the literature study that various factors hamper the effective implementation of the process approach. It is important that negative factors such as 'large classes' and 'a lengthy syllabus' (in historically disadvantaged [HD] and advantaged schools [HA]) and 'lack of equipment' and 'resource material' (only in HD schools) which received high percentages in the survey, will duly be considered when implementing the process approach, curriculum 2005 or 21. These factors can exert a powerful influence on the success of any changes in biology education. To ensure the successful implementation of the process approach it is important that all teachers receive adequate in-service training to keep abreast with new teaching strategies and methods / Educational Studies / D.Ed. (Didactics)

The purpose of this study was to investigate if teacher, pupil, curriculum and classroom environment variables were significantly related to adolescents' attitudes towards Biology. The study also investigated whether certain factors (as moderator variables) significantly influenced the relationships between pupils' attitudes towards Biology and each of the independent variables. For the investigation a sample of 426 standard eight, nine and ten pupils from three school-types completed an attitude questionnaire. Parametric statistics were used to analyse the results. Findings from the correlation and stepwise regression analysis revealed that the curriculum was the strongest correlate of attitude and accounted for most of the variance in pupils' attitudes towards Biology. An analysis of variance revealed no significant difference in pupils' attitudes towards Biology when gender, standard, parental levels of formal education and type of school were used as moderator variables. These findings suggest a complete restructuring of the Biology curriculum. / Psychology of Education / M. Ed. (Psychology of Education)

Teachers use student grouping to reduce the complexities of the classroom. Grouping has been credited with making behavior more predictable, improving interpersonal skills, and making instruction easier by increasing homogeneity. Research suggests that teachers' grouping decisions are influenced by characteristics of the student, the teacher, the task, and the environment. Research on grouping has centered on elementary classes, with little investigation of secondary classes. The purpose of this study was to describe the influences on secondary laboratory teachers' grouping decisions in a naturally occurring secondary school setting.

M.Ed. (Science Education) / Evolution was introduced as a new section of Life Sciences in the National Curriculum Statement in 2008, anecdotal evidence indicating that this incorporation was not welcomed by all teachers, learners, parents and schools with the same enthusiasm. For example, many Christian teachers and learners seem to have religious objections, but while there is ample research available in the United States of America and Great Britain on their views of evolution, that on the South African Life Sciences classroom is limited. Therefore, this study strives to determine the lived experiences of these teachers and learners and how they relate to the topic. The objectives were to investigate how Christian teachers of Life Sciences experience the teaching of evolution in the classroom; the knowledge and skills they have in order to teach natural selection and evolutionary biology, as prescribed by the National Curriculum Statement; and the barriers they face in the teaching of evolution and natural selection. Meanwhile, Grade 12 learners completed a questionnaire before and after receiving tuition on evolution in order to determine their lived experiences. This study is part of a trilogy within a Research Niche Area of the University of Johannesburg, with the other two researchers focusing on Islam perspectives (Yalvac, 2011) and the Hindu perspective (Reddy, 2012). This is an explanatory sequential mixed method study with an element of phenomenology. Quantitative data was collected which informed the qualitative research, the latter being used to examine the lived experiences of Life Sciences teachers, the former to determine learners’ attitudes toward evolution as well as gauging the teachers’ general understanding of the theory of evolution. Third generation Cultural Historical Activity theory (CHAT) was used as the theoretical framework through which the lived experiences of Christian teachers and learners were analysed. This is appropriate for this study as it views the teachers and learners holistically, by taking their culture and history into account, and it provides a vehicle for looking at what Pintrich, Marx and Boyle (1993) call, the “hot” factors associated with controversial conceptual change. The findings of my study show that many Christian teachers and learners experience conflict between their religion and evolution and many tensions arise in the activity system when using CHAT as a lens. These tensions mainly arise due to a lack of the teachers’ PCK and the conflict arising because of religious objections. The findings furthermore show that learners have a relative naïve understanding of evolution before tuition and have many misconceptions regarding it. A clear polarisation can be seen after tuition as learners move from a neutral stance with regards to evolution to either a more creationistic or scientific point of view. In the final chapter I make recommendations on how the teaching and learning of evolution can be improved in the South African classroom.

This study aimed to investigate how Grade 11 Biology teachers mediate learning through code-switching from English to Oshiwambo. It was triggered by my experience as a teacher when I came to observe that the majority of teachers still use the home language during their lessons though the language policy for schools in Namibia clearly states that English should be used as a medium of instruction from Grade Four onwards. The research was carried out at Happy Secondary School (pseudonym), a rural government school in Omusati Region, Namibia. It was a qualitative case study underpinned by an interpretive paradigm. The unit of analysis was the mediation of learning through codeswitching from English to Oshiwambo. Document analysis, questionnaires, interviews (semistructured, focus group, stimulated recall interviews) and lesson observations were used as data gathering techniques, to ensure adequate coverage, validity and trustworthiness of the data gathered. The study adopted Vygotsky’s social constructivism and the socio-cultural perspective in conjunction with Shulman’s Pedagogical Content Knowledge (PCK) as the theoretical frameworks. The data analysis process entailed organising data into themes from which four analytical statements were then derived in relation to the research questions. The study found that both Biology teachers and learners view code-switching as a useful tool in making learners understand the biological concepts. The study revealed that Biology teachers code-switch from English to Oshiwambo to make learners understand better, increase participation, explain concepts, elaborate, for disciplinary purposes, when giving examples of everyday knowledge events and when asking questions. The study also revealed that learners code-switch mainly for good communication, easier self-expression, due to loss of words, when unprepared to explain concepts and due to fear of making mistakes. It emerged, however, that both teachers and learners experience some challenges when codeswitching from English to Oshiwambo is used to mediate learning in Biology lessons. These include time constraints, lack of biological terms in Oshiwambo, different Oshiwambo dialects and the language policy. In addition, learners also lose the opportunity to learn English and find it difficult to answer questions in the examinations. The study revealed that Biology teachers and learners try to overcome these challenges by good lesson preparation, mini-teaching, using English/Oshindonga dictionaries or simply by adhering to the language policy.

This study explored three aspects related to ESL students in a mainstream grade 11 biology classroom: 1) the nature of students' participation in classroom activities, 2) the factors that enhanced or constrained ESL students' engagement in social interactions, and 3) the role of language in the learning of science. Ten ESL students were observed over an eight-month period in this biology classroom. Data were collected using qualitative research methods such as participant observation, audio-recordings of lessons, field notes, semi-structured interviews, short lesson recall interviews and students' written work. The study was framed within sociocultural perspectives, particularly the social constructivist perspectives of Vygotsky (1962,1978) and Wertsch (1991). Data were analysed with respect to the three research aspects. Firstly, the findings showed that ESL students' preferred and exhibited a variety of participation practices that ranged from personal-individual to socio-interactive in nature. Both personal-individual and socio-interactive practices appeared to support science and language learning. Secondly, the findings indicated that ESL students' engagement in classroom social interactions was most likely influenced by the complex interactions between a number of competing factors at the individual, interpersonal and community/cultural levels (Rogoff, Radziszewska, & Masiello, 1995). In this study, six factors that appeared to enhance or constrain ESL students' engagement in classroom social interactions were identified. These factors were socio-cultural factors, prior classroom practice, teaching practices, affective factors, English language proficiency, and participation in the research project. Thirdly, the findings indicated that language played a significant mediational role in ESL students' learning of science. The data revealed that the learning of science terms and concepts can be explained by a functional model of language that includes: 1) the use of discourse to construct meanings, 2) multiple semiotic representations of the thing/process, and 3) constructing taxonomies and ways of reasoning. Other important findings were: talking about language is integral to biology teaching and learning, ESL students' prior knowledge of everyday words does not necessarily help them interpret written questions on worksheets, and ESL students' prior knowledge of concepts in their first language does not necessarily support concept learning in the second language. / Education, Faculty of / Curriculum and Pedagogy (EDCP), Department of / Graduate

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The purpose of the study was to evaluate the teaching of evolution in selected grade 10 classrooms in Namibia. Some teachers from Oshikoto region in Onyaanya circuit have indicated the difficulties they have encountered when teaching the topic in Life Science of Namibian curriculum. Moreover, the teaching of evolution has a great practical value for student directly or indirectly, evolutionary biology has made many contributions to society. An understanding of evolution is essential in finding and using natural resources and it will be indispensable to establish sustainable relationship with the natural environment. Specifically, this study examined a set of variables including teachers’ understanding of evolution. The data were collected from Life Science teachers through administration of evolution content knowledge. Qualitative case study approach was employed. The population comprised of three Life Science grade 10 teachers from three schools. Three teachers were selected by using a purposive sampling technique. The sampling technique was chosen because is relevant to the conceptual framework and the research questions addressed by the research. The qualitative research was executed by applying the phenomenological method. Mason (2012) claims that: “qualitative research is used when the research wishes to understand meanings, beliefs and values”. The study was drawn from the theory of social constructivism theory by Vygotsky, 1978. According to Vygotsky, (1978) “much important learning by the child occurs through social interaction with a skilful tutor”. The researcher collected qualitative data by means of classroom observations and semi-structured I with three Life Science teachers from three different schools. The following research questions were attempt to be answered: What is the nature of teacher’s content knowledge on evolution teaching in grade 10? What is the nature of teachers’ instructional strategies during evolution teaching? How does the teachers’ content knowledge and instructional strategies shape the teacher’s interactions and discourse? The collected data was analysed using Classroom Practice Diagnostic Framework (CPDF). Participants used their teaching experiences to teach evolution. This study indicated a lack of content knowledge among teachers and teaching and learning resources at schools. It is recommended that the Ministry of Education allocate enough textbook funds to regions to cater for every learner’s textbook. Life Science education officer should collaborate with biology education officer to organise a workshop for Life Science teacher in their region. The workshop will equip teachers with more information on evolution and will help in the improvement of learners’ performances. / Science and Technology Education / M. Ed. (Natural Science Education)