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91.
The thesis of this study is to propose an extended methodology for laboratory based Information Retrieval evaluation under incomplete relevance assessments. This new methodology aims to identify potential uncertainty during system comparison that may result from incompleteness. The adoption of this methodology is advantageous, because the detection of epistemic uncertainty – the amount of knowledge (or ignorance) we have about the estimate of a system’s performance – during the evaluation process can guide and direct researchers when evaluating new systems over existing and future test collections. Across a series of experiments we demonstrate how this methodology can lead towards a finer grained analysis of systems. In particular, we show through experimentation how the current practice in Information Retrieval evaluation of using a measurement depth larger than the pooling depth increases uncertainty during system comparison. 相似文献
92.
93.
Drawing from the Deweyan theory of experience (1934, 1938), the goal of teaching and learning for transformative, aesthetic
experience is contrasted against teaching and learning from a cognitive, rational framework. A quasi-experimental design was
used to investigate teaching and learning of fifth grade science from each perspective across an entire school year including
three major units of instruction. Detailed comparisons of teaching are given and pre and post measures of interest in learning
science, science identity affiliation, and efficacy beliefs are investigated. Tests of conceptual understanding before, after,
and one month after instruction reveal teaching for transformative, aesthetic experience fosters more, and more enduring,
learning of science concepts. Investigations of transfer also suggest students learning for transformative, aesthetic experiences
learn to see the world differently and find more interest and excitement in the world outside of school. 相似文献
94.
95.
This study, situated in a multilingual, English-medium educational context, draws on theory from mathematics and language education to capture teachers’ perspectives on the place of language in their mathematics pedagogy. The benchmark study explored this topic through surveying and interviewing teachers. Additionally, it sought to relate teachers’ views to their practice by focusing on observing three teachers’ mathematics lessons at primary one, three, and five. Findings are that mathematics teachers placed importance on teaching language, being specifically concerned with language as input and comprehension. They taught vocabulary and reading skills in supportive ways explicitly yet differently at the three grade levels. Particularly at the lower levels, teachers contextualised language in the concrete examples employed for mathematics teaching. At all three levels, prominence was given to teaching pupils how to read word problems as well as how to solve them. However, at primary three, a tension was observed between the two aims of teaching mathematical vocabulary and teaching the reading skills for word problems. This paper illustrates the tension and discusses its possible causes. 相似文献
96.
Karen L. Bierman Rebecca M. Sanford DeRousie Brenda Heinrichs Celene E. Domitrovich Mark T. Greenberg Sukhdeep Gill 《Early education and development》2013,24(8):1194-1213
Research Findings: Recent research has validated the power of evidence-based preschool interventions to improve teaching quality and promote child school readiness when implemented in the context of research trials. However, very rarely are follow-up assessments conducted with teachers in order to evaluate the maintenance of improved teaching quality or sustained use of evidence-based curriculum components after the intervention trial. In the current study, we collected follow-up assessments of teachers 1 year after their involvement in the REDI (REsearch-based, Developmentally Informed) research trial to evaluate the extent to which intervention teachers continued to implement the REDI curriculum components with high quality and to explore possible preintervention predictors of sustained implementation. In addition, we conducted classroom observations to determine whether general improvements in the teaching quality of intervention teachers (relative to control group teachers) were sustained. Results indicated sustained high-quality implementation of some curriculum components (the Promoting Alternative THinking Strategies curriculum) but decreased implementation of other components (the language/literacy components). Sustained intervention effects were evident on most aspects of general teaching quality targeted by the intervention. Practice or Policy: Implications for practice and policy are discussed. 相似文献
97.
This article explores heterogeneity as fundamental to learning. Inspired by Bakhtin's notion of heteroglossia, a design team consisting of an experienced classroom teacher and 2 researchers investigated how a class of 3rd and 4th graders came to understand disciplinary points of view on heat, heat transfer, and the particulate nature of matter. Through a series of planned and unplanned encounters, official versions of the Second Law of Thermodynamics and the particulate view of matter were juxtaposed with varied domains of experience of heat transfer and phase change in water. We analyze the children's discourse to examine how they populated these phenomena with meaning and what they learned in the process. We conclude by describing key principles and a conundrum that emerged from this research. 相似文献
98.
With trends across many countries still indicating the decline of student interest in school science and diminishing numbers of students studying science beyond the compulsory years, it seems that the field remains in crisis. To address these unfortunate trends, there needs to be a greater emphasis on science education research that highlights the good news stories. For example, what are science teachers actually doing in their classrooms to increase student interest and understanding in science? This article focuses on the science teaching beliefs and practices of four Western Australian primary school teachers. The teachers were nominated by a professional colleague as effective practitioners. The study involved gathering information from classroom observations and teacher interviews to provide background information to assist in developing understandings of these teachers and their science teaching. This article reports on the initial findings drawn from Deanne A, Kate B, Lisa C and Rebecca D. Their practices were organised into the following six categories: classroom environment; conceptual knowledge and procedural skills; teaching strategies and approaches; student-specific considerations; teacher-specific considerations; and context-specific considerations. In examining the components contributing to these categories, it was evident that the teachers’ beliefs, as well as the contextual factors inherent in each classroom environment, influenced how and why they teach science in the ways they do. 相似文献
99.
100.
Mark Wolery Carol Schroeder Catherine G. Martin Martha L. Venn Ariane Holcombe Jeffri Brookfield Kay Huffman Lucy A. Fleming 《Early education and development》1994,5(3):181-194
This report describes a mail survey of general early educators from Head Start, public school pre-kindergarten, public school kindergarten, and community preschool/child care programs. The purposes were to secure information about the availability of classroom activities and areas, and to obtain the respondents' perceptions of the ease with which activities and areas could be adapted to accommodate children with disabilities. Of the 893 mailed questionnaires, 483 (54.1%) were returned and coded. The respondents reportedly used a wide range of classroom activities and areas, and they rated those activities and areas as moderately easy to adapt. Also, respondents from mainstreamed programs used slightly more activities and perceived the activities as easier to adapt than did respondents from non-mainstreamed programs. The findings appear to indicate that placement of children with disabilities in segregated programs cannot be justified on grounds that integration will restrict the range of activities available to typically developing children, or on the grounds that the adaptations are perceived by program staff as too difficult to be accomplished. 相似文献