The aim of this research project was to examine how group discussions influence student performance in a DoE prescribed Life Sciences activity. The research methodology draws on collaborative group work and learner oriented assessment frameworks. The case study was conducted in a suburban high school in south Gauteng. Students were explicitly taught collaborative group work skills. As group work discussions are dependent on subject content knowledge, students were required to complete the assessment activity individually first. Students were placed in groups of four or five that were academically heterogeneous, in an attempt to encourage robust discussions. Following group work discussions students completed a final write up of the assessment activity. Findings from the research showed a statistically significant improvement in the mean pre group work assessment score to the post group work assessment score. All students were found to interact in a co-regulated way in that all were active participants. Each group had at least one member who was a hitch hiker. This student was unprepared and was the most disengaged and passive throughout the group work. The hitch hiker tended to have the lowest post group work activity score for their group. The student whose post group work activity score was the highest was the one who was the most prepared and except for a student whose home language was not the LOLT all others were the most active in their groups. Student discussions were dependent on subject content knowledge. Where subject content knowledge was sound, discussions resulted in cognitive conflict allowing for the social construction of knowledge. Poor content knowledge resulted in discussions which left students confused and seeking help from the teacher. Whilst most students perceived the group work to improve their understanding of the work, the heterogeneity of the groups was raised as a concern by a hitch hiker and students who obtained the highest post group work assessment scores. The hitchhiker in one of the groups perceived that she was not taken seriously, whilst the high academic achievers felt that they were providing information to students who were not well prepared. Most students valued the group work activity and recommended its use for future Grade 11 Life Sciences students.

The purpose of this study was three-fold: to measure the ability of the Medical Explorers case-based curriculum to improve higher order thinking skills; to evaluate the impact of the Medical Explorers case-based curriculum to help students be self directed learners; and to investigate the impact of the Medical Explorers case-based curriculum to improve student attitudes of the life sciences. The target population for this study was secondary students enrolled in advanced life science programs. The resulting sample (n = 71) consisted of 36 students in the case-based experimental group and 35 students in the control group. Furthermore, this study employed an experimental, pretest-posttest control group research design. The treatment consisted of two instructional strategies: case-based learning and teacher-guided learning. Analysis of covariance indicated no treatment effect on critical thinking ability or Motivation and Self-regulation of Learning. However, the Medical Explorers case-based curriculum did show a treatment effect on student attitudes toward the life sciences. These results seem to indicate that case-based curriculum has a positive impact on students’ perspectives and attitudes about the study of life science as well as their interest in life science based careers. Such outcomes are also a good indicator that students enjoy and perceive the value to use of case studies in science, and because they see value in the work that they do they open up their minds to true learning and integration. Of additional interest was the observation that on average eleventh graders showed consistently stronger gains in critical thinking, motivation and self-regulation of learning strategies, and attitudes toward the life sciences as compared to twelfth grade students. In fact, twelfth grade students showed a pre to post loss on the Watson-Glaser and the MSLQ scores while eleventh grade students showed positive gains on each of these instruments. This decline in twelfth grade performance is an endemic indicator of underlying problems that exists in this transitional year of education and supports the need to strengthen the transitional connections between high schools and institutions of higher learning. / Department of Biology

Ph.D. / Evolution of life as a scientific theory was introduced officially into the South African life sciences grade twelve curriculum in 2008. This presented an opportunity to investigate how teachers could incorporate teaching strategies, involving the use of narratives and concept cartoons, into their pedagogical content knowledge to encourage the use of higher-order thinking skills and deep learning about evolution, a new topic in the curriculum. Little research has been done on how narratives and concept cartoons contribute to the development of higher-order thinking skills in teachers and their ability to use these teaching strategies to effect a better conceptualization of evolution. A mixed methods research design was adopted to establish generalizations about the teachers’ higher-order thinking skills as well as to explore their individual worldviews about evolution as a scientific theory and their perceptions about the controversy between science and religion. The quantitative and main part of the study involved a (quasi)experimental format based on interventions focusing on workshop presentations using either narratives or concept cartoons. A pre-test and post-test format was used to measure the effect of the treatments. A rubric, based on the Piagetian levels of concept development, was designed to transform qualitative responses into quantitative data. The responses to five open-ended questions of a questionnaire were analyzed using the Wilcoxon Signed Rank test and the Mann-Whitney U test. The smaller and supportive phase of the study involved categorizing and then analyzing qualitative data, derived from different artifacts and responses to the questionnaire, in order to establish how the teachers’ worldviews influenced their perceptions of the evolution of life, the nature of science and religion. An embedded concurrent mixed methods design allowed for the simultaneous generation and collection of quantitative and qualitative data. The findings were integrated and mixed to give a clearer and more global picture not only of the teachers’ ability to use higher-order thinking skills but also to reflect their conceptual ecologies of evolution.

M.Ed. (Science Education) / South Africa is one of the global hotspots of both biological and ethnic diversity. Southern Africa is rich in angiosperm species, and the angiosperm species count is considered to be 21,817. The traditional medicinal systems of different cultural groups and their herbal, animal and mineral materia medica have ancient origins which may date back to Palaeolithic times. Indigenous knowledge (lK) and cultural practices in many areas of the country provide learners with a good "entry" into the scientific world. A true constructivist teacher will realise the importance of building new knowledge on learners' existing knowledge. This will show the learners how relevant science is to our daily lives. It might also open future career opportunities, and develop learners' entrepreneurial skills. This fact is acknowledged by the new curriculum (the National Curriculum Statement), and Life Sciences teachers are expected to infuse their teaching with indigenous knowledge. When these new policies were created, policy makers focused on the what of desired educational change, and unfortunately neglected the how (Rogan & Aldous, 2009). Teachers often have limited understanding of the curriculum changes. The textbooks used in class give little or even no proper information about indigenous knowledge. Whereas some textbooks still provide information on IK in the form of examples, hardly any attention is given to teaching strategies and practical work that can be done in the classroom. My study highlights the problem that many teachers simply ignore IK, due to their lack of Pedagogical Content Knowledge (PCK) in this regard, and the lack of guidance and support from the Department of Education. As many teachers were trained in the "old method" of teaching and not in the pedagogy prescribed by the National Curriculum Statement (NCS), many of them do not have specific knowledge about the indigenous knowledge that they need to impart to learners. Those who are fortunate enough to have sufficient knowledge of indigenous knowledge systems (IKS), often lack the pedagogy. Once again, we need to go back in history to understand why teachers find it so difficult to teach IK. In the apartheid era it was a taboo to mention traditional medicine in the classroom. Our traditional medicine was often replaced by Western medicine. Black South Africans were robbed of their identity. Under the Suppression of Witchcraft Act, indigenous belief systems were undermined and in most cases referred to as pagan (heathen) belief systems. As a result, indigenous belief systems were viewed as something that derails society. This study focuses on a number of issues related to the incorporation of indigenous knowledge in the classroom. One of the main concerns is teachers' pedagogical content knowledge (PCK). Two additional factors also make the introduction of indigenous knowledge difficult in the classroom: (a) the multicultural South African society (whose IK should be entertained?), and (b) the nature of science, and many teachers' perception that the introduction of IK would constitute pseudo-science. The question arises whether it is possible to introduce indigenous knowledge in a scientific way in the Life Sciences classroom. Is an IK focus compliant with the syntactical nature of Life Sciences, namely an emphasis on inquiry-based approaches? A second question arises: Are South African teachers able to teach IK in such a context? As mentioned above, many Life Sciences teachers find it difficult to follow heuristic approaches where learners engage with discovery learning making observations, formulating hypotheses, developing experimental designs, collecting and interpreting data, and making conclusions. Now, in addition to this challenge, teachers need to follow such a pedagogy to investigate indigenous knowledge claims. It is just so much easier for teachers to rely on "chalk and talk" approaches, as a study of Petersen (2010) reveals...

The purpose of this project was to address the need for making the subject matter of life science accessible to all kindergarten and first grade students.

A research report submitted to the faculty of Science, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Masters of Science. 20 July 2017. / Disciplinary knowledge is recognised as teacher professional knowledge base that is central in promoting effective teaching and learning in science education. Although that is the case, in one of the South African University, that this study was conducted in, the 4th year Life sciences Pre-service teachers’ were not tested on their understanding of the disciplinary nature of their subject of specialisation. As a result, the type of disciplinary gaze that they acquired by the end of the teacher training remained unknown within the institution. Thus, this study then used a case study methodology to investigate the Pre-service teachers’ levels of understanding of the disciplinary nature of Life Sciences as a discipline. The participants of this study consisted of twenty nine 4th year Pre-service teachers’ who were enrolled for a Life sciences Bachelor of Education program and one Life sciences lecturer who was involved in teaching the subject. This research took on a qualitative approach, which yielding both qualitative and quantitative data, through the use of questionnaires as well as semi-focused interviews as research instruments. The outcomes of this study showed that, although the Pre-service teachers’ were not explicitly taught about the nature of the subject, but they still showed a satisfactory understanding of it. Although that was the case, the Pre-service teachers’ still demonstrated a fractured comprehension of the disciplinary knowledge aspects, such as the history, philosophy and the nature of science. On the other hand, the findings of this study also demonstrated that, the Pre-service teachers’ acquired an extensive gaze of understanding of Subject Matter Knowledge, which is another component of Disciplinary knowledge, and this was because, this knowledge base was explicitly taught and assessed with the teacher training program. / LG2018

The educational reform policy in Namibia adopted the principles and practice of learner-centred education, a policy based on constructivist epistemology. This approach emphasises that learners are constructors of knowledge and that they must discover information and construct their own learning. Constructivist techniques require the use of critical thinking through learners’ active involvement in the learning process. The aim is for learners to use critical thinking to identify problems, ask questions, reason, examine and solve problems in real situations and make sound decisions. This approach provides learners with activities and experiences that stimulate them to learn to think for themselves and to ask questions. Therefore, teachers need to design activities that require learners to think critically and act independently through mastering these various modes of inquiry. The purpose of this study was to explore how the selected Grade 10 Life Science teachers understand and implement critical thinking in their teaching practice. I conducted the study in two secondary schools from the Omusati region in Namibia using a case study to gain insight into the implementation of critical thinking. Three data collection instruments: interviews, document analysis and class observations were used. The reason for conducting this study was to gain a better understanding of how teachers use various strategies to foster critical thinking skills in Life Science and the challenges they experience in teaching in secondary schools. The results of the study revealed that teachers have a theoretical understanding of what critical thinking implies and the role it plays in learning. They are also aware of the strategies used to develop critical thinking skills. However, these theoretical perspectives do not reflect in their teaching in that some of the strategies that the teachers used did not bring about meaningful learning. Learners are still required to recall factual knowledge, thus active involvement of the learners is limited. The study also revealed that there are specific issues that hamper the implementation of critical thinking, which include superficial understanding of learner-centered education, teacher-tell approach, overcrowded curriculum, inexplicit syllabus, lack of good examples from the textbooks and examinations, too short lesson periods, lack of language proficiency and lack of professional development. The findings indicate that despite the theoretical understanding of the teachers in this study, their actual practice of developing critical thinking skills is problematic. The study concludes that teachers should be encouraged to design better-structured activities in order to involve learners beyond just being listeners. In light of these findings, the study recognizes a need for ongoing in-service professional development to support teachers in modelling critical thinking to their learners and to teach them to think critically. The findings of the study will serve to inform both my and my colleague’s professional practice as advisory teachers with regard to what to focus on when advising and supporting the teachers in schools.

Prior to independence in Namibia in 1990 the education system of the day did not encourage the majority of Namibian learners to explore and investigate the wonder of the natural and physical world. The post independence education system has nurtured the study of the sciences and has emphasized participation, problem solving and independent studies. The inclusion of projects and other independent studies has been regarded as a key vehicle to develop scientific understanding and competencies related to this understanding. However, very few studies have hitherto investigated the teachers’ understanding and implementation of projects in the Namibian context. This study investigates how Grade 10 Life Science teachers understand and implement projects in selected schools in Namibia. The study focused on two teachers in two schools, a combined and a senior secondary school in the Oshikoto educational region of Namibia. The research was conducted through an interpretive case study aiming to gain a better understanding about the implementation of projects in schools. Data were collected through semi-structured interviews, classroom observation and document analysis. The findings indicate that despite the focus on projects in the Life Science syllabus and broad curriculum, policy documents do not give detailed guidelines on how projects should be planned, organized and assessed. The results revealed that knowledge about projects and their implementation is primarily informed by practical activities rather than the critical enquiries or investigations required by the Life Science curriculum policy. The study also revealed that despite the in-service training received by the two teachers participating in this study on syllabus interpretation, it is apparent from the findings that project work in these in-service programmes was neglected. This has further hampered teachers’ understanding and implementation of projects. The findings of this study point to a need for project guidelines as well as in-service programmes in this area if the stated nature and role of projects in the context of Namibian education policy is to be achieved.

This study was carried out to investigate the strategies used by teachers to foster environmental learning in the Namibian Life Science curriculum in four schools in Swakopmund, Erongo Education Region. This study is a qualitative case study. I used semi-structured interviews, observation and document analysis as instruments to collect data. Two schools were selected to participate in the case study. Research participants included four teachers (two teachers from each school) of which two teachers are teaching at each school. The study was contextualised through a review of policy changes in Namibian education, which focus on learner-centred education. The study identified six strategies used by teachers to foster environmental learning in the Life Sciences curriculum. These are planning; working with information; practical, excursions and clubs; involving the learners; using visual aids and teaching materials; and choosing topics with a local focus. Through a consideration of the different strategies used by teachers, in relation to the learner-centred nature of the educational reform project in Namibia the study provides insight into the way in which teachers view learner-centred education. The study also illuminates how strategies used by teachers reflect learner-centred education principles and it outlines a number of tensions emerging in the fostering of environmental learning in learner-centred ways. The study identifies further support required by teachers, and makes recommendations which will further enhance the strategies used by teachers to foster the environmental learning focus in Life Sciences, and also enhance learner-centred teaching in Life Science.

M.Ed. / This study was conducted with the main aim to inquire into the possibilities of the integration of themes on HIV/AIDS into the Natural Sciences (Grades 7-9) and Life Sciences (Grades 10-12) curriculum in such a way that learners can become aware of the danger of an epidemic such as caused by HIV/AIDS, and start to take care of themselves. The researcher also wanted to explore the views of educators as stakeholders’ perseverance and strategies for combating the pandemic spread of the HIV/AIDS amongst our youth and everyone else. It is generally accepted that many schools are already experiencing the effects of the disease as teachers, learners and members of their families fall ill and even die. This often results in the disruption of the normal school programme. At present, the assumption can be made that there is no integration of themes, knowledge and life skills on HIV/AIDS and the Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12) curriculum, and no teaching about the consequences of this disease. It is clear that HIV/AIDS, Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12) programmes should be designed to enable young learners to develop the skills, knowledge, attitudes and values that will prepare them to identify and solve problems and make decisions for their own benefit. At the same time, Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12) help learners to develop basic personal and community health knowledge and skills that would benefit the whole community. They will also learn about their rights and responsibilities and the causes and impact of problems that may affect their health and safety because the HIV/AIDS programmes can also be incorporated into the Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12) curriculum. Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12), and themes on HIV/AIDS, link closely to the knowledge and experiences the learners bring with them to school. The programmes should affirm both this prior knowledge and experience, and assist in the development of new life skills out of it. The Department of Education is expecting that the issue of HIV/AIDS should be taught in school. The problem that arises is HOW TO link or integrate HIV/AIDS and Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12). The educators need to be capacitated through in-service training and workshops to enable them to handle the issue of HIV/AIDS with all the sensitivity it deserves. Where teachers can draw on their relevant professional experiences and expertise to integrate and strengthen their Natural Sciences (Grade 7-9) and Life Sciences (Grade 10-12) skills, they should do so without hesitation. At the same time they should address the development of appropriate life skills and knowledge on HIV/AIDS to deal with the consequences of the disease and how to fight it. / Dr. M.C. van Loggerenberg