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Preparation for lifelong learning using ePortfolios 总被引：1，自引：1，他引：1
Rapid technological change, increasing globalization and a changing world of employment with multiple roles during one's professional life are necessitating a change from knowledge to learning societies. Full participation requires lifelong learning skills, meaning the ability to solve problems, work both independently and in a team, communicate effectively in all formats and on all levels, and self-direct one's learning and professional development needs. Universities need to take responsibility in preparing students for lifelong learning. While engineering and science degrees traditionally do not emphasize the importance of lifelong learning skills new programmes of study are now being introduced, often using electronic portfolios to support engagement with learning objectives and reflection. This article describes an electronic portfolio initiative that is targeted at engineering and computer science students. The initiative aims to create awareness among students on the nature and importance of lifelong learning skills, to facilitate the development of such skills and to assist students in showcasing their competence regarding these skills. Interviews with industry representatives regarding the characteristics of a lifelong learner and the values of constructing and presenting portfolios were conducted and have resulted in strong support for the electronic portfolio initiative. The article provides background on lifelong learning and electronic portfolios, outlines the design of the initiative and then focuses on feedback from industry representatives. 相似文献
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Ben Baumfalk Devarati Bhattacharya Tina Vo Cory Forbes Laura Zangori Christina Schwarz 《科学教学研究杂志》2019,56(5):570-597
Developing scientific literacy about water systems is critical for K-12 students. However, even with opportunities to build knowledge about the hydrosphere in elementary classrooms, early learners may struggle to understand the water cycle (Forbes et al., 2015 ; Gunckel et al., 2012 ; Zangori et al., 2015 ; Zangori et al., 2017 ). Scientific modeling affords opportunities for students to develop representations, make their ideas visible, and generate model-based explanations for complex natural systems like the water cycle. This study describes a comprehensive evaluation of a 5-year, design-based research project focused on the development, implementation, revision, and testing of an enhanced, model-centered version of the Full Option Science System (FOSS) Water (2005) unit in third grade classrooms. Here, we build upon our previous work (Forbes et al., 2015 a; b; Vo et al., 2015 ; Zangori et al., 2015 ; Zangori et al., 2017 ) by conducting a comparative analysis of student outcomes in two sets of classrooms: (1) one implementing the modeling-enhanced version of the FOSS Water unit developed by the research team (n = 6), and 2) another using the standard, unmodified version of the same curricular unit (n = 5). Results demonstrate that teachers in both conditions implemented the two versions of the curriculum with relative fidelity. On average, students exposed to the modeling-enhanced version of the curriculum showed greater gains in their model-based explanations for the hydrosphere. Engagement in scientific modeling allowed students to articulate hydrologic phenomena by (1) identifying various elements that constitute the hydrosphere, (2) describing how these elements influenced the movement of water in the hydrosphere, and (3) demonstrating underlying processes that govern the movement of water in the hydrosphere. 相似文献
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Over the series of articles on circadian rhythms, we saw that living organisms exhibit daily rhythms in multiple behaviours and physiological processes. Although some rhythms may be passive responses to 24 h environmental cycles, many are regulated by endogenous-rhythmgenerating machinery called circadian clocks. We have introduced the concept of circadian clocks, their organization and the underlying molecular mechanisms. In this article, we will dwell upon one of the most fundamental questions pertaining to circadian clocks, ‘Why do we have them?’. The aim of this article is not to provide answers, but to discuss the efforts and strategies used to address this question and critically evaluate explanations proposed till date. 相似文献
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Adolescents with word-reading skills below grade level were randomly assigned to one of three conditions. Those receiving interventions practiced reading 100 multisyllabic words, either by analyzing graphosyllabic units in the words or by reading the words as unanalyzed wholes. The third group received no special instruction. Posttests revealed that graphosyllabic instruction helped students to decode novel words, remember how to read words with practice, and remember the spellings of words when compared to controls. In contrast, whole-word instruction yielded no benefit on transfer tasks compared to controls. Effects were observed primarily among adolescents reading at a third-grade-equivalent level and less so at a fourth- and fifth-grade-equivalent level. Results are consistent with a connectionist view of word learning and indicate the importance of providing struggling readers with instruction and practice in how to fully analyze the graphosyllabic constituents of words. 相似文献
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De Manisha D. Banerjee G. Talukdar D. K. Bhattacharya 《Indian journal of clinical biochemistry : IJCB》1999,14(2):207-212
The aim of the present work is to understand the lipid peroxidation of RBC membrane and the spectrin protein content of RBC
membrane cytoskeleton of thalassaemic carrier state (trait) of β and hemoglobin E variant (HbE). We have measured the hemoglobin
(Hb), malondialdehyde (MDA) and spectrin content of RBC membrane of thalassaemic carrier. The spectrin content (α and β band)
of both β and HbE carrier was not changed than normal individuals. However, lipid peroxidation of RBC membrane was significantly
increased in both β and HbE trait, and Hb level was also decreased in thalassaemic carrier. It may be assumed that oxidative
damage by excess lipid peroxidation may have no role on irreversible membrane damage in β thalassaemia and HbE thalassaemia
carrier. 相似文献
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There is widespread belief that exposure to television has harmful effects on children's cognitive development. Most studies that point to a negative correlation between hours of television watching and cognitive outcomes, fail to establish causality. Using the National Longitudinal Survey of Youth (NLSY) we study young children between 5 and 10 years of age during late 1990s and early 2000s. We find strong evidence of negative correlations between hours of television watched and cognitive test scores. However, once parent's characteristics and unobserved child characteristics are taken into account these correlations go away. We find that hours of television viewed per se do not have any measurable impact on children's test scores. Our results are robust to different model specifications and instrumental variable estimates. We conclude that despite the conventional wisdom and the ongoing populist movement, proactive policies to reduce children's television exposure are not likely to improve children's cognitive development and academic performance. 相似文献
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