The purpose of the research was to investigate the effectiveness of using multimedia as a means of teaching physical science to learners. The underlying theoretical assumption was that a multimedia presentation would help to reduce the cognitive load experienced by learners when they learn physical science content, compared to a traditional mode of presentation, and that this reduction may have a positive effect on the ease with which they master the content. Physical science learners in Grade 11 viewed a presentation consisting of multimedia screens and screens depicting the learning content in a traditional layout – in order to compare the level of knowledge gained as well as the cognitive load experienced for the multimedia and traditional instructions. Pre- and post-test questionnaires were used to determine the knowledge gained, while cognitive load was measured using a dual-task methodology. A multivariate analysis of variance was used to analyse the data. The results did not reveal a statistically significant increase in knowledge gained via the multimedia approach when compared to the traditional mode of instruction, but when focussing the analysis on learners with a lower-knowledge base in physical science though, statistically significant results were found. However, no significant results were found to support the hypothesis that multimedia would help to reduce learners’ cognitive load. It was concluded that the multimedia design principles are more effective in increasing knowledge for physical science learners of low-knowledge than traditional instructional designs. / M. Sc. (Psychology)

Bibliography: leaves 131-155 / The central objective of the present research was to provide a better understanding of stereotype threat and its underlying effects on female high school students’ intention to major in Science, Technology, Engineering and Mathematics (STEM) fields. Specifically, the study investigated the intervening effects of mathematics/science self-efficacy and the conditional effects of perceived social support with regards to the implications of stereotype threat. For this reason, three studies were conducted. Participants were female (Study 1 – 3) and male (Study 1) high school students from Harer and Dire Dawa Regions, located in the Eastern part of Ethiopia. Study 1 provided evidence that both female and male participants were well aware of the existence of the negative stereotype about females’ mathematics/science ability. Participants reported that the Ethiopian society attributes less mathematics/science ability to females than to males. Although female participants were well aware of the existence of the negative stereotype about females’ mathematics and science ability, they did not endorse it. Study 2 showed experimentally that stereotype threat reduces indeed females’ intention to major in STEM fields. Moreover, Study 2 revealed that mathematics/science self-efficacy mediated the relationship between stereotype threat and females’ intention to major in STEM fields. Study 3 addressed the role of social support. The results revealed that female participants who felt socially supported in their intention to major in a STEM field were found to be resistant to the negative effects of stereotype threat. In other words, it is the interaction between stereotype threat and the lack of social support that reduces females' intention to major in STEM fields. The findings of the present study are discussed in relation to stereotype threat theory and related literature as well as in relation to potential educational interventions relevant for the Ethiopian context. / Psychology / D. Phil. (Psychology)

Several studies and reports have indicated that grade 09 learners are underperforming in science. The underperformance of learners in science is very concerning and has evoked research interests into teaching strategies that can be used to improve the performance of learners in science. This study investigated the impact of student teams achievement divisions (STAD) cooperative instructional strategy on the performance of grade 09 learners in science. A mixed method approach specifically quasi-experimental design and interviews were used to collect data. The population for the study composed of grade 09 learners from Baltimore circuit in Limpopo. The sample consisted of sixty learners from two purposively selected secondary schools. The dependent samples t-test was used to analyze the data collected. The results revealed that student teams achievement divisions (STAD) cooperative instructional strategy resulted in better performance of learners in science than traditional teaching method. In addition, learners expressed an increased interest, motivation and self-efficacy after exposure to cooperative learning. / Science and Technology Education / M. Ed. (Natural Science Education)

Girls who have high aptitude in math are not entering careers related to science, technology, engineering, and math (STEM fields) at the same rate as boys. As a result, female students may have fewer employment opportunities. This study explores one potential way to reduce the gap between male and female career aspirations and choices. Specifically, it looks at the impact of bringing women with careers in math- and science-related fields into high school classrooms as role models. The study uses surveys to measure pre- and post-visit perceptions of science and scientific work as well as student's short-term interest in math and science courses. In addition to these surveys, student comments were collected about the role model visits. While the overall study yielded little statistical significance, it also indicated that the role model visits had some impact on student perceptions and choices and raised questions that warrant further study.

This research study investigated the effect of using the think aloud protocol while reading informational text on students' ability to learn from text in a secondary science classroom. The participants in this study were high school students (n=47) in three classes of a mixed-grade Integrated Biology, Chemistry, and Physics course. The study tracked student achievement during a four-week curriculum unit on the theory of evolution and evidence for biological evolution. All students received instruction on using the think aloud protocol, and all students practiced the think aloud protocol when reading short articles related to scientific evidence for evolution. The researcher measured student's ability to read and understand science text by comparing scores from a reading skills pre-assessment and post-assessment from each student. Student surveys were conducted to gather feedback on the effectiveness of the strategy in teaching students to use a literacy strategy while reading science text. Data were analyzed using descriptive statistics.

The purpose of this study was to observe high school students as they progressed through a Science-Technology-Society (STS) project that involved the closing of a landfill. In this STS project, students investigated the best vegetation for reseeding a closed landfill. This project was initiated because a highway was to be built across the landfill to Explore Park. The director of Explore Park requested an experimental vegetation instead of the standard vegetation mixture. He wanted a vegetation that was aesthetically pleasing and environmentally acceptable. The study investigated the involvement of students in the construction of knowledge of local environmental issues. Students shared their perceptions about the STS process through interviews, journal entries, a questionnaire, field notes, and written artifacts. All data were transcribed and coded for themes. Ethnographic methods were used to tell this story in twelve vignettes. The results of this study are important because they show how educators can use local issues to build classroom curriculum. Students became actively involved in the learning process as they advanced through identified STS instructional goals. The first goal was the Foundations Level. Basic content associated with landfill management and revegetation issues were introduced. Facts about garbage and the need for reducing, reusing, and recycling were investigated. The second goal was the Issue Awareness Level. This goal included becoming involved, identifying the players, and investigating values and beliefs. The third goal was the Investigation and Evaluation Level. Students were exposed to concepts and strategies necessary to investigate and analyze the issues and evaluate alternative solutions. This level encompassed designing plant experiments. The fourth goal was the Citizenship Responsibility Level. Students were introduced to strategies necessary for making responsible decisions concerning solutions to the issues. The conclusions of this study suggest that for many students, the teaching of science through local technological and societal issues allowed them to become actively engaged in the learning process. Students who took ownership of their investigations created opportunities to enhance self-esteem, made connections, and enhanced their knowledge of scientific investigations and scientific content in the context of real life issues. / Ph. D.

The exploratory study investigated school related factors responsible for high matriculaion failure rates in physical science in public high schools of Alexandra Township in South Africa. The target population included all Further Education and Training (FET) science educators and learners in Alexandra Township. An extreme-case sampling method was used to select a sample of two schools. Data was collected through two different closed questionnaires, one for educators (n=10) and the other for learners (n=250). The results were analyzed using mainly descriptive tatistics. The results, according to the views and opinions of educators and learners showed that the main causes of high failure rates are poor educator qualifications, outdated teaching methods, massive workloads, high levels of absenteeism and acute deficiencies in aspects related to: resources, subject content, classroom management skills, proficiency in language of instruction and assessment, motivation and perseverance. Recommendations for practice and policy are suggested. / Further Teacher Education / M. Ed. (Natural Science Education)

The growing diversity of school populations around the world means that for many learners the language of learning in mainstream classrooms is not their first language. The researcher would submit that content-based second language learning in a context such as a Science classroom is considered advantageous as it enables the learner to manipulate a target language such as English in a way which is meaningful. However, Science learners who have yet to achieve communicative competence in English are disadvantaged when it comes to developing a deep understanding of scientific concepts. Many mainstream Science educators have concerns about this significant group of learners who can be left on the periphery of the class to cope as best as they can. Very often educators aim to meet the needs of English Second Language (ESL) learners without any specific knowledge of the strategies which would enhance learning and ensure that learning environments encourage participation and interaction. The learners themselves have not only to deal with language and sociocultural issues but must face the cognitive demands of Science including negotiating its specialized language. The aim of this study was to investigate how the use of English as a language of learning and teaching Science in rural secondary schools in the Vlakfontein Circuit of the Limpopo Capricorn District, influenced the ability of Grade 8 students to learn Science. The focus was on the Grade 8 classes since they are at the threshold of their educational pursuit. The study had two main purposes. The first goal was to describe the current situation with respect to rural secondary school learners and their educators in selected learning environments in Vlakfontein Circuit. The second goal was to bring about improvement in the learners’ situations by employing specifically designed interventions. The study had three focal areas: the language; the teaching and learning environment; and the ESL learner. The investigation was conducted in disadvantaged rural secondary schools in the Vlakfontein Circuit in the Limpopo province. Observations of the Science classes revealed that, even for the learners with very limited English language proficiency there was little ESL specialist support available. The data analyzed was collected using a variety of data collection tools. The main data generation tools were observation, semi-structured interviews and questionnaires. The analysis revealed that learners were lacking in Science register (terminology). This study also found out that non-technical language used in Science lessons affected the learners’ understanding much more than the educators were aware. Educators’ attitudes and beliefs strongly influenced the interaction and participation of ESL learners in Science classrooms. The study also revealed that developing language skills prevented ESL learners from asking questions and answering questions in class and academic progress in Science was impeded by limited opportunities for ESL learners to clarify their understanding. Further, the investigation established that achievement in Science and in education overall was affected by assessment instruments which were infused with specific linguistic or cultural knowledge. The study arrived at a conclusion that the needs of the research students could not be met by a programme based on the traditional format of ESP teaching. Hence, the researcher has recommended a Science Based English Programme (SBEP) which encapsulates several adjustments in orientation methods and materials to meet the ESL learners’ needs. This kind of learning-centred arrangement will allow not only efficiency of SBEP instruction but also allow the kinds of activities that may not be possible in groups with a wide dispersion of interests. However, the extent to which the research learners encountered difficulties with vocabulary suggests that there is a need to investigate more effective methods of dealing with this issue. Needed research could also be directed into the development of a Science glossary with appropriate language levels for ESL learners. This could include technical scientific terms with examples of how terms can be used.From the outcome of the interviews with educators, it is evident that further research is needed concerning the educators’ English proficiency and Science competence in ESL situations. / Teacher Education / D. Ed. (Didactics)

This research investigates progress in the integration of information and communication technology (ICT) into curriculum-based teaching and learning in the Lesotho secondary and high school science classroom, with the aim of establishing how effective e-learning and integration of ICT can be supported. E-learning was perceived by education stakeholders in Lesotho as an effective way to enhance teaching and learning. To this end, Lesotho embarked on three partnership projects, namely SchoolNet, Microsoft STIC and NEPAD e-School Projects. There is a volume of research, international and regional, on e-learning and ICT integration, mainly conducted by European and American researchers. This study by an African author, therefore, fills a gap. Using a variant of action research, the author undertook six studies over four years, investigating the extent of computing infrastructure in schools and ways in which e-learning was implemented in subject-based teaching. In particular, he studied barriers to ICT implementation in Lesotho; advantages and disadvantages of combining e-learning with classroom practice; the perceptions, aptitude and skills of Lesotho science teachers and students; professional development programmes; and preparations for introducing e-learning, including infrastructural issues. Literature studies were conducted, following which pertinent concepts from the literature were used to generate a framework of evaluation categories and criteria for addressing the research questions of this study. The criteria were translated into questions and evaluation statements for data collection instruments for the empirical studies. Triangulation in data collection and analysis was provided by applying multiple and mixed data collection methods: questionnaires, interviews, observations and case studies, to gather data from principals, teachers and students in selected schools across the three projects and in varying regions of Lesotho. The study identified notable progress, but determines that more remains to be done, on an ongoing basis, to support secondary and high schools in Lesotho with implementation plans and strategies. The study concludes with guideline and recommendations for educators. / Computing / D. Phil. (Mathematics, Science and Technology Education)

A case study using a phenomenological approach was carried out to determine how effective and enduring learning is for two diverse groups of grade 9 natural science learners when delivered through a collaborative co-teaching approach involving a high school science teacher and a special needs teacher. Even though the findings of this research indicate that the co-taught sessions did not significantly affect the learners’ test results, the majority of the learners reported very positive perceptions of co-teaching. From the findings the main benefits for the learners included an improvement in their understanding of learning styles and associated study skills, increased contact time with the teachers, and the benefit of another teacher’s expertise in the classroom. The researcher found the co-teaching approach yielded a clearer focus on the individual learning styles, new strategies for differentiation, and a positive teaching experience. / Science and Technology Education / M. Ed. (Natural Science Education)