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The language and literacy development of young dual language learners: A critical review 总被引：2，自引：0，他引：2
Carol Scheffner Hammer Erika Hoff Yuuko Uchikoshi Cristina Gillanders Dina C. Castro Lia E. Sandilos 《Early childhood research quarterly》2014
The number of children living in the United States who are learning two languages is increasing greatly. However, relatively little research has been conducted on the language and literacy development of dual language learners (DLLs), particularly during the early childhood years. To summarize the extant literature and guide future research, a critical analysis of the literature was conducted. A search of major databases for studies on young typically developing DLLs between 2000 and 2011 yielded 182 peer-reviewed articles. 相似文献
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Expressive vocabulary development in children from bilingual and monolingual homes: A longitudinal study from two to four years 总被引：1，自引：0，他引：1
Erika Hoff Rosario Rumiche Andrea Burridge Krystal M. Ribot Stephanie N. Welsh 《Early childhood research quarterly》2014
The early course of language development among children from bilingual homes varies in ways that are not well described and as a result of influences that are not well understood. Here, we describe trajectories of relative change in expressive vocabulary from 22 to 48 months and vocabulary achievement at 48 months in two groups of children from bilingual homes (children with one and children with two native Spanish-speaking parents [ns = 15 and 11]) and in an SES-equivalent group of children from monolingual English homes (n = 31). The two groups from bilingual homes differed in their mean levels of English and Spanish skills, in their developmental trajectories during this period, and in the relation between language use at home and their vocabulary development. Children with two native Spanish-speaking parents showed steepest gains in total vocabulary and were more nearly balanced bilinguals at 48 months. Children with one native Spanish- and one native English-speaking parent showed trajectories of relative decline in Spanish vocabulary. At 48 months, mean levels of English skill among the bilingual children were comparable to monolingual norms, but children with two native Spanish-speaking parents had lower English scores than the SES-equivalent monolingual group. Use of English at home was a significant positive predictor of English vocabulary scores only among children with a native English-speaking parent. These findings argue that efforts to optimize school readiness among children from immigrant families should facilitate their access to native speakers of the community language, and efforts to support heritage language maintenance should include encouraging heritage language use by native speakers in the home. 相似文献
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Effects of child and environmental factors in moderating the course of bilingual development were investigated using longitudinal data, from age 2.5 to 5 years, on 126 U.S.-born children with early exposure to Spanish and English. Multilevel models of Spanish and English expressive vocabulary identified children’s phonological memory ability as a significant predictor of both outcomes, while also replicating the effect of the relative amount of language exposure. In addition, nonverbal IQ was a significant predictor of English vocabulary; birth order and maternal education in Spanish were significant predictors of Spanish vocabulary. These findings expand our understanding of the sources of the wide heterogeneity in bilingual development and of the requirements that language acquisition makes of learners and their environments. 相似文献
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Educational Psychology Review - Academic dishonesty is a rampant and troubling phenomenon in the educational sector. Although demographic factors have been linked with students’ academic... 相似文献
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Mathematical models and mathematical modeling play different roles in the different areas and problems in which they are used. The function and status of mathematical modeling and models in the different areas depend on the scientific practice as well as the underlying philosophical and theoretical position held by the modeler(s) and the practitioners in the extra-mathematical domain. For students to experience the significance of different scientific practices and cultures for the function and status of mathematical modeling in other sciences, students need to be placed in didactical situations where such differences are exposed and made into explicit objects of their reflections. It can be difficult to create such situations in the teaching of contemporary science in which modeling is part of the culture. In this paper we show how history can serve as a means for students to be engaged in situations in which they can experience and be challenged to reflect upon and criticize, the use of modeling and the significance of the context for the function and status of modeling and models in scientific practices. We present Nicolas Rashevsky’s model of cell division from the 1930s together with a discussion of disagreement between him and some biologists as one such episode from the past. We illustrate how a group of science students at Roskilde University, through their work with this historical case, experienced that different scientific cultures have different opinions of the value of a model as an instrument for gaining scientific knowledge; that the explanatory power of a model is linked not only to the context of its use, but also to the underlying philosophical and theoretical position held by the modeler(s) and the scientists discussing the model and its use. The episode’s potential to challenge students to reflect upon and criticize the modeling process and the function of models in an extra mathematical domain is discussed with respect to the notions of internal and external reflections. 相似文献
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Peter Sloat Hoff 《Innovative Higher Education》2009,34(4):203-217
In a crisis-plagued world looking to higher education for knowledge, wisdom, and solutions, higher education itself is stumbling.
Its transformational thinking has frozen up like an overstressed computer program; and we need, in effect, to “push the reset
button.” In 1953, the renowned and controversial president of the University of Chicago, Robert M. Hutchins, authored a refreshing
and provocative work, The University of Utopia, containing ideas that still challenge today’s paradigms. He argued for institutional independence over “accountability,”
“outcomes,” and “stakeholders.” He indicted educational evils he called “industrialization,” “specialization,” “philosophical
diversity,” and “social and political conformity” and suggested ways to defeat them. Although his 56-year-old thoughts on
reconceptualizing the multiversity are not a panacea, they could help higher education make a fresh start. This essay reintroduces
the modern reader to Hutchins’s iconoclastic and stimulating ideas in the hope of restarting the stalled agenda for educational
reform. 相似文献
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Over the past few decades, many food niches have emerged with a specific focus on quality. In specialty coffee, micro roasters have brought about Direct Trade coffee as a way of organising an alternative around new tastes and qualities through ongoing and ‘direct’ relations to farmers and cooperatives. But Direct Trade also involves exporters. We ask, how do exporters and roasters work together in these new coffee relations, and what do they work on? We observe and participate in a situation where Colombian coffee exporters visit Danish roasters. They tour the roasting facilities and taste a number of coffees. Often, the term power is used to analyse such value chain interactions, but we argue that the term coordination better opens up these interactions for exploration and analysis. What emerges is a coordination of quality. Through touring and tasting, issues emerge and differences are laid out. We learn that quality is a continuous achievement. There is friction between the ways in which the roasters and exporters do quality, but these are not done away with through power. They are made known and discussable through the work of coordination. The activity of tasting quality is a coordination device that allows for bringing out differences in how quality is done in practice. Coffee, in this event, is not a fixed object, but shifts as issues of quality are brought up in tasting. This suggests a decentering of the object on the issue of quality. 相似文献