Thesis supervisor: John P. Spencer. Includes bibliographical references (p. 167-174).

Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 286-295).

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Min Liu. Vita. Includes bibliographical references.

M.A. / Jean Piaget (1896-1980) played a major role in laying the groundwork for many of our current beliefs about cognitive development. By examining children's answers to particular questions and how they reached those answers, Piaget concluded that children's thinking was qualitatively different from adults and that it had its own special logic. Piaget was concerned with explaining the universal aspects of cognitive development rather than individual differences between people. While specific beliefs and ideas of different cultures may vary, Piaget posited that the stages of cognitive development, namely, sensori-motor, preoperational, concrete operational and formal operational, unfold in the same sequence at roughly the same ages, irrespective of cultural and educational background. The new political changes in South Africa have transformed the education policies from the content-orientated, rote-learning based curriculum of the past, to a skills-based, interactive learning approach called OutcomesBased Education (OBE). OBE aims to move away from the old 'tabula rasa' education policy towards a dynamic learning system that involves learners at a critical level of intelligence. OBE presents itself as compatible with developments in cognitive psychology, particularly Piaget's theory of intellectual development. The aim of this study was to explore, on a theoretical level, whether OBE is a marked improvement on the old system, particularly with regard to cognitive development, or whether the old system is equivalent to or better than OBE as a facilitator of the development of the concrete operational and formal operational stages. As this was a literature survey, an extensive theoretical analysis on Piaget's theory as well as on the premises of OBE was done, in order to determine whether there are theoretical links between OBE and Piaget's theory. Theoretical links were found between OBE and Piaget's theory, hence the pertinent and salient aspects of both Piaget's theory and the premises of OBE were reformulated in terms of the following hypotheses for the next stage of the research: • Children exposed to OBE will show an accelerated cognitive development when compared to children who have not been exposed to OBE. • There is a relationship between OBE and cognitive development. These hypotheses will have to be followed up by an empirical study where the cognitive development of learners from an OBE system will have to be compared with the cognitive development of learners from a non-OBE system. The research design of such a study will have to be such that the proposed hypotheses could be tested.

Staff developers are facing new challenges in the 1990's in British Columbia as secondary education is criticized not only for what it teaches, but also, for how it is being taught. This project addresses the very complex nature of improving the learning situation of students by focusing on staff development. This study documents the inservice, implementation and teacher responses to a model for staff development at a secondary school which included: 1. the introduction of new teaching strategies which supported learner-focused classroom practice 2. teacher collaboration and peer support 3. the theory of constructivism and its incorporation into classroom practice. To gain some insight into teachers' perceptions of new teaching strategies and skills, collaboration, and a constructivist approach to classroom practice was one major research strand. Another strand of the research investigated the process of change as facilitated through staff development. Specifically, the intent of the study was to identify and elaborate on those factors which are liberating and prone to influence in a process known as staff development and to recognize those factors which are resistant and tend to act as barriers to change. Data for this study was gained by following a study group of six secondary teachers from three curricular disciplines over a time period of three months. Group interviews during the study and individual interviews at the end of the study were collected and transcribed. The responses of the participants to the research questions are reported in detail in an effort to preserve the contextual influences. Through these responses the reader can enter into the individuals' thought processes as participants reflect upon their personal experiences with the challenge of change. The findings of this study support and extend the literature on important components and influences to staff development. In particular, this study gained further insight into: 1. how a constructivist approach can be translated into a model of staff development 2. how influences, such as peer collaboration and peer support enhanced a change in classroom practice. 3. how a change incorporating a constructivist approach to teaching is more likely to be assimilated by an individual who has a transactional or transformational orientation to curriculum. A transmissive orientation to teaching acts as somewhat of a barrier to the conceptual change of a constructivist approach. 4. how the motivation and teacher satisfaction for participating in change is determined to a degree by perceived improvements in learning by students. 5. how all participants experienced change but the nature of that change was very individual, gradual, and incremental in nature along the continuum from teacher to learner-focused education. The study concludes with recommendations for individuals planning staff development which incorporates the research findings. / Science, Faculty of / Mathematics, Department of / Graduate

Instrumentalism is a philosophy of science which holds that scientific theories are merely useful fictions for making computative predictions. Its pragmatic purpose of 'saving the appearances' downgrades the role of theory in science. Realists, on the other hand, take the implications of theories seriously. This study investigates the attributes of both instrumentalism and realism, taking theory as its point of departure. It is pointed out that constructivism is closely related to instrumentalism, both being forms of pragmatism. Since both tend to concoct and relinquish theories too easily, they tend to be relativist and subjectivist. It is therefore concluded that neither instrumentalism, nor constructivism, nor empiricism is sufficient for a rounded science education. What is needed is a type of realism which acknowledges both the empirical physical world 'out there' and the constructivist nature of scientific knowledge. The naive (empiricist) realism so prevalent in school science textbooks cannot do this. It is contended that critical realism, and especially that of Bernard Lonergan, can meet this requirement. Reality is more than what is given in sensory experience. Therefore, in order to help solve the problem of relativism and subjectivity inherent in constructivism, we need to revise our notion of reality and objectivity. Twenty-three selected British, American, South African, and African Third World high school physical science textbooks were examined in detail to determine the extent of an instrumentalist philosophy in them. They were subjected to several textual analyses, including one especially devised for this study. The results reveal that our high school physical science textbooks do indeed contain a high degree of instrumentalism. This study postulates that this instrumentalism may be used to help pupils move towards realism. However, this needs to be augmented by a full-blooded critical realist approach which takes theoretical entities seriously. One way of doing this is through the use of suitable material in the preface of every textbook. Not only should the dangers of instrumentalism (and naive constructivism) be pointed out, but the role of theory in science should be emphasised. This may be achieved by simulations to encourage growth of models and theories, historical case studies involving theory-development, and additional reading of scientists in action. Some examples of these are provided.

No description available.

Formal learning contexts often present information to learners in an inert and highly abstract form, making it unlikely that learners would ever use this information in their every-day lives. Learners do, however, show a greater propensity for retaining information that is seen as having relevance in their lives. Constructivism is an educational paradigm that has gained popularity amongst educationists. The core tenet of this paradigm is that learners learn through interaction with their environment and that all knowledge construction is based on previous life experience. Information that is presented to learners in a contextualised form not only has a better chance of being retained in long-term memory, but also has a greater likelihood of being applied in relevant life situations. This publication deals with the research, design and delivery of important information concerning diseases that have a major impact in Southern Africa. Firstly, learners at the University of Natal, Durban were polled for their existing knowledge concerning four widespread diseases, namely HIV/AIDS, tuberculosis, malaria and cancer. Aspects of these diseases where learners demonstrated a low level of awareness were defined as the primary learning objectives for an educational 3D- immersive microworld. Areas of knowledge concerning the transmission, symptomatic expression, biology and prevention of these diseases were generally not well represented in the learner sample. Hence, information regarding these aspects is presented to learners in a contextualised form within the microworld. Motivation for learners to play in this microworld is provided by a storyline that was researched and written for the portal. In addition, the model used in the storyline design was evaluated for its effectiveness as a tool to be used in the planning of future educational games. A model, the Puzzle Process model, was proposed to inform the design of puzzle interfaces for these types of interactive learning environments, and puzzle interfaces were designed for the virtual environment according to the model guidelines. The learning environment was tested as part of the formative evaluation with a small sample of learners. The testing process made use of both quantitative and qualitative methodologies to evaluate the effectiveness of the learning environment as a possible learning tool. Comparison of pre- and post-gameplay questionnaires showed that learners gained a more indepth and richer understanding of the topics being dealt with in the portal. In particular, the puzzle objects situated in the environment stimulated learners to negotiate meanings for the puzzle interfaces and, in the process, encouraged learners to discuss the topic being dealt with. Results from this study also show that the longer learners discussed and negotiated a certain knowledge domain, the greater their increase in richness of information was for that knowledge domain after gameplay. These results highlight the importance of social dialogue in the knowledge construction process and suggest that environments like these have great potential based on their ability to encourage learners to talk to one another and their facilitators while negotiating mutually acceptable knowledge. The original Puzzle Process model, as well as the Game Achievement model and the Game Object model were modified to account for the need for social dialogue and content. These more comprehensive models are instrumental for use in future virtual world environment design. / Thesis (Ph.D.)-University of KwaZulu- Natal, Durban, 2004.

published_or_final_version / Social Work and Social Administration / Doctoral / Doctor of Philosophy

published_or_final_version / Social Work and Administration / Doctoral / Doctor of Philosophy