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Representations are used extensively in mathematics and translation ability is highly correlated with success in mathematics education. The authors investigate the translation ability of university students as far as the concept of function is concerned. The research focuses on the relationship between success in, solving direct translation tasks and success in solving problems by articulating different representations of the concept of function. Furthermore, it examines the relationship between student performance and the nature of the representation included in the translation task. The ability to pass from one representation to another was associated with success in problem solving. These results indicate that translation ability should be considered as an important factor in problem solving. Percentages are lower when an iconic representation is included in the translation task. This could be partly attributed to the holistic nature of iconic representations and to the way the concept of function is taught at secondary schools. 相似文献
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ABSTRACTThis article identifies the visual representation of Europe’s “refugee crisis” in the media as a key dimension of the communicative architecture of the crisis and its aftermath. Effectively, it argues, the powerful, even iconic, imagery that the media produced and shared during the 2015 “crisis” affirmed ideological frames of incompatible difference, perpetually dividing European citizens and refugees. The article focuses on some of the fundamental elements of the 2015 crisis’s visual grammar to demonstrate how they have (re-)produced popular fears of strangeness and the need for containment and control of foreign bodies. This visual grammar, we argue, imitated and procreated recognizable representations of popular culture to exaggerate newcomers’ strangeness and incompatible difference from the national subject. On the one hand, many news media simulated zombies’ threatening strangeness in images of refugee massification; on the other, many news media images reaffirmed the decisive power of the national subject over refugees’ fate, not unlike the video game player who unilaterally controls a game and takes action when confronted by zombies. This grammar, we argue, symbolically predetermines encounters between citizens and refugees, by emphasizing their incompatible difference and newcomers’ strangeness. 相似文献
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Maria Angela Shiakalli 《International Journal of Early Years Education》2012,20(4):315-331
Could problem solving be the object of teaching in early education? Could appropriate teaching interventions develop to scaffold children's efforts to solve problems? These were the central questions of this article. The sample consisted of 18 children attending public pre-school in Cyprus. The problem they were asked to solve was to find all solutions of the pentomino. The children's problem solving was supported by graphically representing their solutions on squared paper. The findings show that children responded positively to the problem and were successful in finding all solutions for the specific problem. The graphical representation of the solutions and the forms of teacher–children and children–children interactions played an important role in the positive outcome of the activity. 相似文献
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Myria Georgiou 《Popular Communication》2018,16(1):45-57
ABSTRACTThis article examines a number of digital initiatives where refugees and migrants speak with/to Europe in the context of the “migration crisis.” The analysis of four institutional and grassroots initiatives illustrates digital Europe’s symbolic articulations of borders that divide people and territories. As argued, the mediated visibility and voice of refugees and migrants matter precisely as the order of appearance (in Arendt’s terms) in digital Europe represents a fundamental dimension of the continent’s communicative order: revealing who speaks and who is silenced, which actors are heard and which are sidelined in the context of Europe’s “migration crisis.” The incorporation of refugee and migrant voices in digital Europe shows that voice does not guarantee recognition; rather, its incorporation reveals the complex politics of digital representation: on occasions challenging hegemonic power structures but most often digitally reaffirming bordering power and its symbolical articulations. 相似文献
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Although young citizens may not always politically engage in the same fashion as their elders, research suggests they are using Facebook, Twitter, and other newer communication systems to mobilize politically both generally and around environmental issues. Given the declining environmental conditions facing young citizens, a national stratified quota sample of 1,096 U.S. parents and their children between the ages of 12 and 17 was conducted to investigate the factors potentially related to their efforts to persuade members of their online social networks to be more environmental. We believe that online peer persuasion is an important concept to investigate because peer persuasion can create subjective norms that ultimately may influence behavior. Hierarchical regression analysis revealed that, although parents influence youth behavior (Adj. R 2 = .11), the greatest variance in behavior was explained by the youth's own environmental self-efficacy, environmental news consumption, political interest, time spent online, gender, and environmental consumerism (ΔR 2 = .29). Youth political interest and environmental consumerism were especially important variables in the final model. Structural equation modeling reinforced that parental influence is primarily indirect. This study appears to be among the first to link environmental consumerism with youth online peer persuasion. 相似文献
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