排序方式： 共有28条查询结果，搜索用时 15 毫秒
11.
Freeman S O'Connor E Parks JW Cunningham M Hurley D Haak D Dirks C Wenderoth MP 《CBE life sciences education》2007,6(2):132-139
We tested five course designs that varied in the structure of daily and weekly active-learning exercises in an attempt to lower the traditionally high failure rate in a gateway course for biology majors. Students were given daily multiple-choice questions and answered with electronic response devices (clickers) or cards. Card responses were ungraded; clicker responses were graded for right/wrong answers or participation. Weekly practice exams were done as an individual or as part of a study group. Compared with previous versions of the same course taught by the same instructor, students in the new course designs performed better: There were significantly lower failure rates, higher total exam points, and higher scores on an identical midterm. Attendance was higher in the clicker versus cards section; attendance and course grade were positively correlated. Students did better on clicker questions if they were graded for right/wrong answers versus participation, although this improvement did not translate into increased scores on exams. In this course, achievement increases when students get regular practice via prescribed (graded) active-learning exercises. 相似文献
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Rivers Michelle L. Fitzsimmons Charles J. Fisk Susan R. Dunlosky John Thompson Clarissa A. 《Metacognition and Learning》2021,16(1):157-178
Metacognition and Learning - Prior research has found gender differences in spatial tasks in which men perform better, and are more confident, than women. Do gender differences also occur in... 相似文献
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The Biology Fellows Program at the University of Washington aims to enhance diversity in science by helping students succeed in the rigorous introductory biology classes and motivating them to engage in undergraduate research. The composite Scholastic Achievement Test scores and high school grade point averages of the Biology Fellows are comparable to those of students who are not in the program; however, they earn, on average, higher grades in introductory biology classes than non-Biology Fellows. Underrepresented minorities and disadvantaged students in the program also earn higher grades in the introductory biology classes than do their non-Biology Fellows counterparts. Analysis of the performance of Biology Fellows shows that the program assists students who are not proficient in certain science process skills and that students who lack these skills are at risk for failing introductory biology. This evaluation provides insight for designing programs that aim to enhance the performance of beginning students of biology, particularly for underrepresented minorities, who want to obtain a life science degree. 相似文献
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Clarissa Menezes Jordão 《Globalisation, Societies & Education》2009,7(1):95-107
This text discusses the locus of English in globalisation discourses. Assuming that languages constitute discursive formations informing ways of knowing, discourses of English as a global language (EGL) are positioned in relation to teaching English as a foreign language in the glocal scene. We draw on post‐colonial theories and critical education, treating languages as social practices and conceiving of teaching EGL as a privileged context for discursive agency, especially when discourses of global English are critically engaged with through dialogue and conceptual questioning. We present a post‐method suggestion of procedures to promote conceptual questioning through construction of open spaces. 相似文献
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The relation between short-term and long-term change (also known as learning and development) has been of great interest throughout the history of developmental psychology. Werner and Vygotsky believed that the two involved basically similar progressions of qualitatively distinct knowledge states; behaviorists such as Kendler and Kendler believed that the two involved similar patterns of continuous growth; Piaget believed that the two were basically dissimilar, with only development involving qualitative reorganization of existing knowledge and acquisition of new cognitive structures. This article examines the viability of these three accounts in accounting for the development of numerical representations. A review of this literature indicated that Werner's and Vygotsky's position (and that of modern dynamic systems and information processing theorists) provided the most accurate account of the data. In particular, both changes over periods of years and changes within a single experimental session indicated that children progress from logarithmic to linear representations of numerical magnitudes, at times showing abrupt changes across a large range of numbers. The pattern occurs with representations of whole number magnitudes at different ages for different numerical ranges; thus, children progress from logarithmic to linear representations of the 0–100 range between kindergarten and second grade, whereas they make the same transition in the 0–1,000 range between second and fourth grade. Similar changes are seen on tasks involving fractions; these changes yield the paradoxical finding that young children at times estimate fractional magnitudes more accurately than adults do. Several different educational interventions based on this analysis of changes in numerical representations have yielded promising results. 相似文献
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Gabriel PEREZ Valentina VERDEJO Clarissa GONDIM-PORTO Julieta ORLANDO Margarita CARU 《Journal of Zhejiang University. Science. B》2014,15(11):966-978
研究目的：开发具有种属特异性序列特征性扩增区域（SCAR）标记物来监测哈茨木霉在其入侵的试验菌群中的定殖和生长,为哈茨木霉应用于生物防治等生态和生物技术中提供支撑。
创新要点：多种木霉属真菌能与各种微观和宏观的生物有机体建立相互作用。利用这些相互作用,木霉可做为原生种群的入侵物种而用于生物防治。本文通过使用试验菌群为研究模型,利用随机扩增多态性DNA（RAPD）技术和序列特征性扩增区域（SCAR）标记物来监测菌群中哈茨木霉的生长状态。
研究方法：利用随机扩增多态性DNA（RAPD）技术,从16个10聚体引物进行多态性筛选,其中1个引物扩增出对应哈茨木霉的条带。对该条带进行克隆测序,并设计5个20-23聚体引物。成功利用引物对2F2／2R2和2F2／2R3278分别特异性地扩增出哈茨木霉BpTloa菌株278bp和448bp的DNA片段。同时,用这两个引物对14个哈茨木霉菌株和几种不同的真菌菌株进行特异性对照试验,也只成功扩增出哈茨木霉菌株。此外,使用真菌DNA混合物和试验真菌群的DNA为模板,采用实时聚合酶链式反应（PCR）对引物对2F2／2R2进行评估。当仅使用100份SCAR标记物或哈茨木霉仅占整个菌群的0．1％时,仍能检测出哈茨木霉。
重要结论：本研究所建立的SCAR分子标记能有效监测菌群中的哈茨木霉的定殖和生长,具有较高特异性、灵敏度和准确度。 相似文献
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In this article, we examine key dilemmas childbirth educators experienced as they made crucial decisions about the content and format of their classes in the current U.S. maternity-care context. This ethnographic study demonstrates that childbirth education is a cultural phenomenon with deeply embedded values regarding the nature and importance of information, scientific evidence, and consumer choice. Articulating how culture shapes the presentation, content, and format of childbirth classes is an important step in understanding and increasing the relevance of this experience for birthing women. 相似文献
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Learning from curriculum materials: Scaffolds for new teachers? 总被引：1，自引：0，他引：1
This article explores how beginning teachers use and learn from curriculum materials. As part of a longitudinal study of beginning English teachers who teach in the Pacific Northwest of the United States, the researchers tracked teachers’ responses to and use of materials over time, and how these materials shaped their classroom practice. The authors found that the teachers spent an enormous amount of time searching out curriculum materials for their classes and that the curriculum materials they encountered did, indeed, powerfully shape their ideas about teaching language arts as well as their classroom practice. Based on their findings, the authors propose a trajectory for the teachers’ use of the curriculum materials. New teachers begin by sticking close to the materials they have at hand. Then, over time, as they learn more about both students and curriculum, they adapt and adjust their use of the materials. The authors argue that new and aspiring teachers need opportunities to analyze and critique curriculum materials, beginning during teacher education and continuing in the company of their more experienced colleagues. 相似文献
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Allan B. de Guzman Kaila Vail A. Lores Maria Clarissa R. Lozano Marilei C. Lozano Deanne M. Lu Christopher Emmanuel D. V. Ma 《Educational gerontology》2013,39(11):801-815
Health-seeking encompasses the activities individuals perform in order to restore wellness when they perceive themselves as ill. Alarmingly, it is apparent that there is a decrease in frequency of health-seeking as one ages. While there have been numerous studies about elderly health-seeking behavior across the globe, the need to know about their preferences remains a research imperative, hence this conjoint analysis investigation. The objective of this study is to identify the health-seeking preferences of a select group of Filipino elderly in the community. To measure preferences for health-seeking, a conjoint analysis survey of 304 Filipino elderly aged 60 years and above was conducted from June to July 2012 using the balanced incomplete block design. Results indicate that the most important attribute in terms of health-seeking behavior is the physician's experience. Elderly clients tend to seek health care from expert private practitioners who provide full information regarding illness and charge professional fees of less than 500 pesos (8–9 British pounds or 12–13 U.S. dollars). Results suggest that there are factors that may impede or promote health care seeking in elderly clients, of which physicians’ experience is deemed most important. These preferences, if integrated into the current practice, can help health care practitioners in improving the quality of care provided. 相似文献