<p>he use of student-centered instructional strategies is a common practice in engineering classes. However, understanding which instructional strategies have a more profound effect on students’ performance and motivation is fundamental in course design. Such comparisons would allow instructors to design and plan their courses with better learning activities, which could lead to better student engagement and learning. In this three-paper dissertation, I explored the relative effectiveness of two instructional strategies 1) reflective thinking, and 2) teamwork participation by primarily using quantitative methods. Self-regulated learning theory and the Interactive-Constructive-Active-Passive (ICAP) framework guided the selection of these two strategies.</p><p>The first study investigated the relationship of an instructional strategy and a motivational construct through the following research questions: 1) Do students with high academic self-efficacy generate high-quality reflections? 2) To what degree do students’ self-efficacy beliefs and reflection quality scores predict their learning outcomes? Bivariate Pearson product-moment correlation and multiple linear regression were used to analyze the relationships.</p><p>In the second study, I focused on studying the relative effectiveness of two instructional strategies on a motivational construct in a larger engineering class. More specifically, the second study focused on understanding change in students’ participation in two instructional strategies (i.e., reflective thinking and teamwork) and students’ achievement goals. Further, the study investigated the unique contribution of instructional strategies on students’ academic performance and changes in achievement goals. I used stepwise hierarchical regression, simultaneous regression, and repeated measures ANOVA to analyze the data.</p><p></p><p>The third study focused on investigating the role of the same two instructional strategies on students’ academic performance and multiple motivational constructs (i.e., self-efficacy, task value, and engagement). I used structural equation modeling, and repeated measures ANOVA to analyze the data.</p>

Text in Afrikaans / Hierdie navorsing belig en evalueer die ontwikkeling van die belangrikste wereldbeskouinge binne die Westerse kultuur deur op noodsaaklike interaksies tussen die filosofie, religie, wetenskap en geskiedenis te konsentreer. 'n Samehangende weergawe van die veranderende werklikheid is slegs moontlik wanneer die mens op historiese gebied goed onderle is. In die antieke wereld het Vorrne en Idees tydlose waarde gehad. Begrippe as skeppinge van die mens is as uitdrukkinge van die meer fundamentele idees of diepste werklikheid beskou. Hierdie Idees het die outentieke werklikheid en hoe die mens behoort te !ewe onverborge gemaak. 'n Fundamentele epogale verandering ('n Kopernikaanse omwenteling) in die perspektief en beeld van die modeme wereldbeskouing het met Descartes ingetree en sou by Kant 'n hoogtepunt bereik. Met die agteruitgang van die Christendom het die wetenskap meteens sy aanspraak op 'n nugtere benadering van die konkrete werklikheid versterk en as die bevryder van die mensdom na vore getree. Die mens is op radikale wyse uit die middelpunt van die Totale Werklikheid (Syn) verplaas. Hierdie verplasing is deur Darwin se relativisme versterk, soda! die wereld sonder geestelike doel en sin gelaat is. Die postmodeme intellektuele era toon 'n besondere kompleksiteit, besluiteloosheid en gebrek aan konsensus oor die wese van die werklikheid en die ongeslotenheid daarvan. Dit bied egter ongeewenaarde moontlikhede en perspektiewe sodat sake van die dag deurskou kan word en probleme opgelos kan word. Eietydse geskiedenis toon 'n universele neiging tot destruksie, maar ook 'n strewe na politieke, sosiale en fi!osofiese hemuwing. Dit wil voorkom of dit die regte tydstip is vir 'n metamorfose ('n periagoge') van fundamentele beginsels en simbole. Die Westerse denke behoort met die grondslae van sy bestaan of die Totale Werklikheid (Syn) te skakel om 'n groter eenheid te verkry en menslike ontheemding te transendeer. Die besinnende ofmetaparadigmatiese benadering kan 'n balans tussen berekende en besinnende denke bring en openheid vir 'n outentieke postmoderne denkmodel skep. Vertroue en geloof is nodig om die drumpel na die mees basiese werklikbeidstruktuur oor te steek. / This research elucidates and evaluates the development of the major worldviews of the Western culture by focusing on the crucial sphere of interaction between philosophy, religion, science and history. A coherent account of the changing conception of reality seems to be possible only to the extent to which one is historically informed. In the ancient world Forms and Ideas were timeless. Conceptual abstractions as creations of the human mind were expressions of the more fundamental ideas or deepest reality. These ideas unveiled authentic reality and how one should conduct life. A fundamental epochal shift (a Copernican revolution) in the perspective and fundamental metaphor of the entire modem worldview began with Descartes and culminated in Kant. Christianity was undermined and science suddenly stood forth as mankind's liberation appealing to common sense and concrete reality. The radical displacement of the human being from the centre of Total Reality (Being) was reinforced by Darwin's relativism of the human being, leading to a world devoid of spiritual purpose and intrinsic meaning. The postmodern intellectual era is profoundly complex, without consensus of the nature of reality, it is open-ended, but blessed with an unprecedented wealth of perspectives to engage the issues confronting it and to solve problems. Contemporary history reflects a universal mood of destruction but also a longing for political, social and philosophical renewal. It seems to be the right moment for a metamorphosis (a periagoge') of fundamental principles and symbols. The deepest passion of the Western mind should be to reunite with the ground of its being, to reconnect with Total Reality (Being), embrace a larger unity and transcend human alienation. The reflective or metaparadigmatic approach seems to create a balance between calculative and reflective thinking and create the necessary openness for an authentic postmodern model of thought. A threshold needs to be crossed demanding trust and faith to bring about the most basic structure of reality. / Educational Studies / D. Ed. (Filosofie van Opvoedkunde)

Text in Afrikaans / Hierdie navorsing belig en evalueer die ontwikkeling van die belangrikste wereldbeskouinge binne die Westerse kultuur deur op noodsaaklike interaksies tussen die filosofie, religie, wetenskap en geskiedenis te konsentreer. 'n Samehangende weergawe van die veranderende werklikheid is slegs moontlik wanneer die mens op historiese gebied goed onderle is. In die antieke wereld het Vorrne en Idees tydlose waarde gehad. Begrippe as skeppinge van die mens is as uitdrukkinge van die meer fundamentele idees of diepste werklikheid beskou. Hierdie Idees het die outentieke werklikheid en hoe die mens behoort te !ewe onverborge gemaak. 'n Fundamentele epogale verandering ('n Kopernikaanse omwenteling) in die perspektief en beeld van die modeme wereldbeskouing het met Descartes ingetree en sou by Kant 'n hoogtepunt bereik. Met die agteruitgang van die Christendom het die wetenskap meteens sy aanspraak op 'n nugtere benadering van die konkrete werklikheid versterk en as die bevryder van die mensdom na vore getree. Die mens is op radikale wyse uit die middelpunt van die Totale Werklikheid (Syn) verplaas. Hierdie verplasing is deur Darwin se relativisme versterk, soda! die wereld sonder geestelike doel en sin gelaat is. Die postmodeme intellektuele era toon 'n besondere kompleksiteit, besluiteloosheid en gebrek aan konsensus oor die wese van die werklikheid en die ongeslotenheid daarvan. Dit bied egter ongeewenaarde moontlikhede en perspektiewe sodat sake van die dag deurskou kan word en probleme opgelos kan word. Eietydse geskiedenis toon 'n universele neiging tot destruksie, maar ook 'n strewe na politieke, sosiale en fi!osofiese hemuwing. Dit wil voorkom of dit die regte tydstip is vir 'n metamorfose ('n periagoge') van fundamentele beginsels en simbole. Die Westerse denke behoort met die grondslae van sy bestaan of die Totale Werklikheid (Syn) te skakel om 'n groter eenheid te verkry en menslike ontheemding te transendeer. Die besinnende ofmetaparadigmatiese benadering kan 'n balans tussen berekende en besinnende denke bring en openheid vir 'n outentieke postmoderne denkmodel skep. Vertroue en geloof is nodig om die drumpel na die mees basiese werklikbeidstruktuur oor te steek. / This research elucidates and evaluates the development of the major worldviews of the Western culture by focusing on the crucial sphere of interaction between philosophy, religion, science and history. A coherent account of the changing conception of reality seems to be possible only to the extent to which one is historically informed. In the ancient world Forms and Ideas were timeless. Conceptual abstractions as creations of the human mind were expressions of the more fundamental ideas or deepest reality. These ideas unveiled authentic reality and how one should conduct life. A fundamental epochal shift (a Copernican revolution) in the perspective and fundamental metaphor of the entire modem worldview began with Descartes and culminated in Kant. Christianity was undermined and science suddenly stood forth as mankind's liberation appealing to common sense and concrete reality. The radical displacement of the human being from the centre of Total Reality (Being) was reinforced by Darwin's relativism of the human being, leading to a world devoid of spiritual purpose and intrinsic meaning. The postmodern intellectual era is profoundly complex, without consensus of the nature of reality, it is open-ended, but blessed with an unprecedented wealth of perspectives to engage the issues confronting it and to solve problems. Contemporary history reflects a universal mood of destruction but also a longing for political, social and philosophical renewal. It seems to be the right moment for a metamorphosis (a periagoge') of fundamental principles and symbols. The deepest passion of the Western mind should be to reunite with the ground of its being, to reconnect with Total Reality (Being), embrace a larger unity and transcend human alienation. The reflective or metaparadigmatic approach seems to create a balance between calculative and reflective thinking and create the necessary openness for an authentic postmodern model of thought. A threshold needs to be crossed demanding trust and faith to bring about the most basic structure of reality. / Educational Studies / D. Ed. (Filosofie van Opvoedkunde)

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With the proliferation of 21st century educational technologies, science teaching and learning with digitally acclimatized learners in secondary science education can be realized through an online Science-Technology-Society-Environment (STSE)-based issues approach. STSE-based programs can be interpreted as the exploration of socially-embedded initiatives in science (e.g., use of genetically modified foods) to promote the development of critical cognitive processes and to empower learners with responsible decision-making skills. This dissertation presents a case study examining the online environment of a grade 11 physics class in an all-girls’ school, and the outcomes from those online discursive opportunities with STSE materials. The limited in-class discussion opportunities are often perceived as low-quality discussions in traditional classrooms because they originate from an inadequate introduction and facilitation of socially relevant issues in science programs. Hence, this research suggests that the science curriculum should be inclusive of STSE-based issue discussions. This study also examines the nature of students’ online discourse and, their perceived benefits and challenges of learning about STSE-based issues through an online environment. Analysis of interviews, offline classroom events and online threaded discussion transcripts draws from the theoretical foundations of critical reflective thinking delineated in the Practical Inquiry (P.I.) Model. The PI model of Cognitive Presence is situated within the Community of Inquiry framework,encompassing two other core elements, Teacher Presence and Social Presence. In studying Cognitive Presence, the online STSE-based discourses were examined according to the four phases of the P.I. Model. The online discussions were measured at macro-levels to reveal patterns in student STSE-based discussions and content analysis of threaded discussions. These analyses indicated that 87% of the students participated in higher quality STSE-based discussions via an online forum as compared to in-class. The micro-level analysis revealed students to attain higher cognitive interactions with STSE issues. Sixteen percent of the students’ threaded postings were identified in the Resolution Phase 4 when the teacher intervened with a focused teaching strategy. This research provides a significant theoretical and pedagogical contribution to blended approach to STSE-based secondary science education. It presents a framework for teachers to facilitate students’ online discussions and to support learners in exploring STSE-based topics.

With the proliferation of 21st century educational technologies, science teaching and learning with digitally acclimatized learners in secondary science education can be realized through an online Science-Technology-Society-Environment (STSE)-based issues approach. STSE-based programs can be interpreted as the exploration of socially-embedded initiatives in science (e.g., use of genetically modified foods) to promote the development of critical cognitive processes and to empower learners with responsible decision-making skills. This dissertation presents a case study examining the online environment of a grade 11 physics class in an all-girls’ school, and the outcomes from those online discursive opportunities with STSE materials. The limited in-class discussion opportunities are often perceived as low-quality discussions in traditional classrooms because they originate from an inadequate introduction and facilitation of socially relevant issues in science programs. Hence, this research suggests that the science curriculum should be inclusive of STSE-based issue discussions. This study also examines the nature of students’ online discourse and, their perceived benefits and challenges of learning about STSE-based issues through an online environment. Analysis of interviews, offline classroom events and online threaded discussion transcripts draws from the theoretical foundations of critical reflective thinking delineated in the Practical Inquiry (P.I.) Model. The PI model of Cognitive Presence is situated within the Community of Inquiry framework,encompassing two other core elements, Teacher Presence and Social Presence. In studying Cognitive Presence, the online STSE-based discourses were examined according to the four phases of the P.I. Model. The online discussions were measured at macro-levels to reveal patterns in student STSE-based discussions and content analysis of threaded discussions. These analyses indicated that 87% of the students participated in higher quality STSE-based discussions via an online forum as compared to in-class. The micro-level analysis revealed students to attain higher cognitive interactions with STSE issues. Sixteen percent of the students’ threaded postings were identified in the Resolution Phase 4 when the teacher intervened with a focused teaching strategy. This research provides a significant theoretical and pedagogical contribution to blended approach to STSE-based secondary science education. It presents a framework for teachers to facilitate students’ online discussions and to support learners in exploring STSE-based topics.