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Previous research studies examining the effects of graphic organizers on reading comprehension for students with learning disabilities (LD) are reviewed. An extensive search of the professional literature between 1963 and June 2001 yielded a total of 21 group design intervention studies that met the criteria for inclusion in the synthesis. Using graphic organizers (i.e., semantic organizers, framed outlines, cognitive maps with and without a mnemonic) was associated with improved reading comprehension overall for students with LD. Compared to standardized reading measures, researcher-developed comprehension measures were associated with higher effect sizes. Initial gains demonstrated when using graphic organizers were not revealed during later comprehension tasks or on new comprehension tasks. 相似文献
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Confidence Intervals for Weighted Composite Scores Under the Compound Binomial Error Model 下载免费PDF全文
Reporting confidence intervals with test scores helps test users make important decisions about examinees by providing information about the precision of test scores. Although a variety of estimation procedures based on the binomial error model are available for computing intervals for test scores, these procedures assume that items are randomly drawn from a undifferentiated universe of items, and therefore might not be suitable for tests developed according to a table of specifications. To address this issue, four interval estimation procedures that use category subscores for the computation of confidence intervals are presented in this article. All four estimation procedures assume that subscores instead of test scores follow a binomial distribution (i.e., compound binomial error model). The relative performance of the four compound binomial–based interval estimation procedures is compared to each other and to the better known normal approximation and Wilson score procedures based on the binomial error model. 相似文献
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The intent of this study was to examine young children’s perceptions of writing self-efficacy (Grades K–1). Most research studies find a significant relationship between self-efficacy and achievement in older students (Grades 4–16). Research has also shown that children are affected by personal perceived self-efficacy. Therefore, self-efficacy can affect young learners as well. There are few self-efficacy studies among young learners, especially kindergarten and first grade. This study was conducted to determine if young learners could describe their writing self-efficacy and, if so, how student perceptions compare to teachers’ and researchers’ perceptions.The data showed that participating students from kindergarten and first grade could describe their writing self-efficacy. Several characteristics of children with high and low writing self-efficacy are discussed. Comparisons between teachers’, researchers’, and children’s perceptions of writing self-efficacy showed consistency with 14 of the 18 student participants. 相似文献
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Detection of differential item functioning (DIF) is most often done between two groups of examinees under item response theory. It is sometimes important, however, to determine whether DIF is present in more than two groups. In this article we present a method for detection of DIF in multiple groups. The method is closely related to Lard's chi-square for comparing vectors of item parameters estimated in two groups. An example using real data is provided. 相似文献
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This article describes the development and application of a two‐tier multiple choice diagnostic instrument to assess high school students' understanding of inorganic chemistry qualitative analysis. The development of the diagnostic instrument was guided by the framework outlined by Treagust. The instrument was administered to 915 Grade 10 students (15 to 17 years old) from 11 schools after they had learned the theory involved in qualitative analysis and after a series of qualitative analysis practical sessions. The Cronbach alpha reliability of the instrument was .68, the facility indices ranged from .17 to .48, and the discrimination indices ranged from .20 to .53. The study showed that the Grade 10 students had difficulty understanding the reactions involved in the identification of cations and anions, for example, double decomposition reactions, the formation and reaction of complex salts, and thermal decomposition. The findings of the study and literature on practical work were used to develop a qualitative analysis teaching package. © 2002 Wiley Periodicals Inc. J Res Sci Teach 39: 283–301, 2002 相似文献
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Kim S. Uhlik 《Journal of Adventure Education & Outdoor Learning》2006,6(2):135-142
Nature continually impresses humans in its role as an omnipresent, if not ultimate, source of power. One hallmark of outdoor and adventure education (OAE) has been its presumption that humans' interaction with aspects of Nature's “power” promotes the antecedents of leadership: measurable, persistent psychological effects and behavioral modifications including self-awareness, self-reliance, and stewardship. Recently, an unresolved discourse has arisen involving the guiding philosophies and actual outcomes derived from programs assembled under various combinations of the terms outdoor, adventure, environment, recreation, and education. Unifying these five terms is leadership potential mediated through Nature's metaphorical majesty and demonstrable power. However, Nature can be an ally, a medium, or an enemy, and outcomes resulting from OAE programs should be congruent with a consciously examined, coherent philosophy. A theoretical model depicts combinations of society, civilization, and culture placed along a continuum ranging from predation to partnership to demonstrate that the type of leadership emanating from any two or more perspectives may be very different. Nature is a complex system that is both predatory and partnering, and leadership in OAE must purposefully select and design programs that embrace the appropriate philosophy of Nature. 相似文献