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This report presents pilot-test results for a science professional development program featuring online, on-demand materials
developed by the National Science Teachers Association. During the spring 2006 semester, 45 middle school teachers from three
different school districts across the United States participated in a professional development program designed to facilitate
content knowledge and skills in the area of Newtonian force and motion. Participants from one of the school districts experienced
a full-day instructor-led workshop along with two web-based seminars with a content-area expert. This was followed by a 4-week
period of time in which they had access to self-directed, online, on-demand instructional materials that included activities,
information, simulations, examples, and practice with immediate feedback over the targeted outcomes. Participants from the
two other school districts only had access to the online materials with no instructor-led experience. This report documents
positive gains in achievement as well as levels of confidence in teaching the material within all of the professional development
groups. Data about the use of specific features within the online material are included, as well as completion rates and attitude
survey results. Recommendations for future study are also included. 相似文献
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Virginia Clinton Ben Seipel Paul van den Broek Kristen L. McMaster Panayiota Kendeou Sarah E. Carlson David N. Rapp 《Journal of Research in Reading》2014,37(4):356-374
The purpose of this study was to determine if there are gender differences among elementary school‐aged students in regard to the inferences they generate during reading. Fourth‐grade students (130 females; 126 males) completed think‐aloud tasks while reading one practice and one experimental narrative text. Females generated a larger number and a greater proportion of reinstatement inferences than did males (Cohen's d = .34, p = .01; Cohen's d = .26, p = .04, respectively). In contrast, there was no evidence for gender differences in other types of think‐aloud responses. These findings suggest that males and females differ in their use of cognitive processes that underlie reading comprehension, particularly with respect to the likelihood of retrieval of information from episodic memory. 相似文献
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Caroline Göpfert Mikko V. Pohjola Vesa Linnamo Olli Ohtonen Walter Rapp Stefan J. Lindinger 《Sports Engineering》2017,20(2):141-153
The purpose of this paper was to present and evaluate a methodology to determine the contribution of bilateral leg and pole thrusts to forward acceleration of the centre of mass (COM) of cross-country skiers from multi-dimensional ground reaction forces and motion capture data. Nine highly skilled cross-country (XC) skiers performed leg skating and V2-alternate skating (V2A) under constant environmental conditions on snow, while ground reaction forces measured from ski bindings and poles and 3D motion with high-speed cameras were captured. COM acceleration determined from 3D motion analyses served as a reference and was compared to the results of the proposed methodology. The obtained values did not differ during the leg skating push-off, and force–time curves showed high similarity, with similarity coefficients (SC) >0.90 in the push-off and gliding phases. In V2A, leg and pole thrusts were shown to contribute 35.1 and 65.9% to the acceleration of the body, respectively. COM acceleration derived from ground reaction forces alone without considering the COM position overestimated the acceleration compared to data from motion analyses, with a mean difference of 17% (P < 0.05) during leg push-off, although the shapes of force–time curves were similar (SC = 0.93). The proposed methodology was shown to be appropriate for determining the acceleration of XC skiers during leg skating push-off from multi-dimensional ground reaction forces and the COM position. It was demonstrated that both the COM position and ground reaction forces are needed to find the source of acceleration. 相似文献
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We regularly consult and construct visual displays that are intended to communicate important information. The power of these displays and the instructional messages we attempt to comprehend when using them emerge from the information included in the display and by their spatial arrangement. In this article, we identify common types of visual displays and the kinds of inferences that each type of display is designed to promote. In particular, we outline different types of semantic and pictorial displays. Then, we describe four main ways in which visual displays can affect cognitive processing including selection, organization, integration, and processing efficiency and how semantic and pictorial displays support these types of processing. We conclude with seven recommendations for designing visual displays and possible directions for future research. 相似文献
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While the number and relative proportion of English language learners (ELL) in public school systems is rapidly increasing, ELL students are often overlooked for gifted programs, and for this reason are grossly underrepresented in gifted and talented education programs. Identification practices that were implemented decades ago did not take into account the linguistic and cultural diversity of students that are present in schools today. This theoretical article examines current gifted identification practices related to ELL students in public schools nationwide. The authors identify necessary components to this process that are often overlooked for ELL populations. Recommendations for best practice and future research are provided. 相似文献
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Kristen L. McMaster Paul van den Broek Christine A. Espin Mary Jane White David N. Rapp Panayiota Kendeou Catherine M. Bohn-Gettler Sarah Carlson 《Learning and individual differences》2012,22(1):100-111
The purpose of this study was to compare the effects of different types of questioning interventions on students' reading comprehension. Fourth-grade students (n = 246) were identified as struggling, average, or good readers and assigned randomly within school to one of three questioning interventions: two inferential conditions (Causal or General) or one literal condition (“Who, What, Where, When” or W-questioning). Teachers delivered the interventions for 20–30 min, 2–4 times per week, for 8–10 weeks. All readers made reliable pre- to posttest comprehension gains as measured by story recall (ps < .001 to .04). Differential effects for intervention were found between two subgroups of struggling comprehenders—elaborators and paraphrasers. Elaborators benefited more than paraphrasers from Causal questioning (d = .86) whereas paraphrasers benefited more than elaborators from General questioning (d = 1.46). These findings suggest that identifying subgroups is important in developing and evaluating the effectiveness of reading comprehension interventions. 相似文献