Encouraging 'active learning' in the large lecture theatre emerges as a credible recommendation for improving university courses, with reports often showing significant improvements in learning outcomes. However, the recommendations are based predominantly on studies undertaken in mechanics. We set out to examine those claims in the thermodynamics module of a large first year physics course with an established technique, called interactive lecture demonstrations (ILDs). The study took place at The University of Sydney, where four parallel streams of the thermodynamics module were divided into two streams that experienced the ILDs and two streams that did not. The programme was first implemented in 2011 to gain experience and refine logistical matters and repeated in 2012 with approximately 500 students. A validated survey, the thermal concepts survey, was used as pre-test and posttest to measure learning gains while surveys and interviews provided insights into what the 'active learning' meant from student experiences. We analysed lecture recordings to capture the time devoted to different activities in a lecture, including interactivity. The learning gains were in the 'high gain' range for the ILD streams and 'medium gain' for the other streams. The analysis of the lecture recordings showed that the ILD streams devoted significantly more time to interactivity while surveys and interviews showed that students in the ILD streams were thinking in deep ways. Our study shows that ILDs can make a difference in students' conceptual understanding as well as their experiences,
Science education research has built a strong body of work on students' understandings but largely overlooked the nature of science knowledge itself. Legitimation Code Theory (LCT), a rapidly growing approach to education, offers a way of analyzing the organizing principles of knowledge practices and their effects on science education. This article focuses on one specific concept from LCT-semantic gravity-that conceptualizes differences in context dependence. The article uses this concept to qualitatively analyze tertiary student responses to a thermal physics question. One result, that legitimate answers must reside within a specific range of context dependence, illustrates how a focus on the organizing principles of knowledge offers a way forward for science education. Abstract: Science education research has built a strong body of work on students' understandings but largely overlooked the nature of science knowledge itself. Legitimation Code Theory (LCT), a rapidly growing approach to education, offers a way of analyzing the organizing principles of knowledge practices and their effects on science education. This article focuses on one specific concept from LCT-semantic gravity-that conceptualizes differences in context dependence. The article uses this concept to qualitatively analyze tertiary student responses to a thermal physics question. One result, that legitimate answers must reside within a specific range of context dependence, illustrates how a focus on the organizing principles of knowledge offers a way forward for science education.Résumé: La recherche en enseignement des sciences a produit de nombreusesétudes sur la compréhension desétudiants, mais a souvent ignoré la nature du savoir scientifique lui-même. La théorie de la légitimation du code (TLC), une approche de plus en plus importante en enseignement, propose une façon d'analyser les principes structurels des pratiques du savoir et leurs effets sur l'enseignement des sciences. Cet article est centré sur un concept en particulier tiré de la TLC-la gravité sémantique-qui conceptualise les différences commeétant dépendantes du contexte. L'article se sert de ce concept pour faire une analyse qualitative des réponses tertiaires desétudiantsà une question de physique thermique. L'un des résultats, selon lequel les réponses légitimes doivent se situer dans un certain rayon de dépendance contextuelle, illustre comment le fait de mettre l'accent sur les principes structurels du savoir ouvre une avenue prometteuse pour l'enseignement des sciences.
Assessments in tertiary science subjects typically assess content knowledge, and there is current need to both develop and assess different forms of knowledge and skills, such as communications and digital literacies. A digital explanation is a multimodal artefact created by students to explain science to a specified audience, which is an alternate form of assessment that has potential to develop and assess these other important forms of knowledge and skills. This research draws from perspectives in multimodality, educational semiotics and science education to gain a better understanding of digital explanation as a form of assessment in university science. Data sources include digital artefacts (n = 42), task descriptions and rubrics and pre-/post-interviews (n = 21) with students who created them as a task in a university science subject. Analysis involved identifying the range of media resources used across the data set, seeking patterns in how multiple resources were used and exploring students' perspectives on the task, including their design decisions. A more detailed look at artefacts from three different science learning contexts illustrates that students base their design decisions on the content knowledge being represented, their technical capabilities to generate them and how to engage the audience. Students enjoy this form of assessment and feel that the tasks allowed them to demonstrate different sorts of capabilities than are normally assessed in their subjects. Recommendations for instructors provide guidance for considering this sort of task in tertiary science contexts.
Rapid technological and social changes have prompted a strong focus on teaching practices in higher education. Among the assortment of programs and approaches aimed at developing teaching practices, peer review and observation of teaching remain widespread for their efficiency and potential to be transformative. Though such programs are well described in the literature, whether or how they affect practices remains under researched. This study reports on the accounts of past participants-with respect to changes in their teaching practices-in a peer review and observation of teaching program run in the Faculty of Science at a large, research-intensive university. Results from a questionnaire and interviews from several years' cohorts indicate that participants overwhelmingly believed that the program enhanced their teaching practice and that they continued to practice specific teaching strategies developed during their participation in the program. Particular features of the program were associated with its success, such as the role and experience of the 'reviewer' and the review cycle. The program was thought to have changed the perspective of participants in the way they think about teaching.
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