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321.
Nina L. Saine Marja-Kristiina Lerkkanen Timo Ahonen Asko Tolvanen Heikki Lyytinen 《Learning and individual differences》2010,20(5):402-414
The aim of the longitudinal intervention study was to build a model of predictive values of reading fluency in three contrastive reading groups: remedial and computer-assisted remedial reading intervention, and mainstream instruction, to identify the most effective type of intervention for children with different profiles of compromised pre-reading skills. The participants were 7-year-old Finnish school beginners (N = 166). Two remedial interventions took place in four weekly sessions of 45 min over a period of 28 weeks in Grade 1. For a child with deficits in the core pre-reading skills (letter knowledge, phonological awareness or rapid automatized naming), the computer-assisted remedial intervention would be the most successful in remediating reading fluency in the transparent Finnish language. Furthermore, children in the computer-assisted intervention were able to reach the average level of the mainstream children by the end of Grade 2. 相似文献
322.
Students' mental load,stress, and performance when working with symbolic or symbolic–textual molecular representations 下载免费PDF全文
In science education, representations are necessary inter alia for the understanding of relationships between structures and systems. However, several studies have identified difficulties of students when working with representations. In the present study, we investigated students' responses (regarding their preference, test performance, mental load (ML), and stress) toward two kinds of representations: symbolic representations, which only use abstract symbols, versus combined symbolic–textual representations, which additionally comprise textual elements. Therefore, students were randomly assigned to one of two treatment groups: one group worked on test tasks accompanied by symbolic representations, and the others worked on the same tasks, but with symbolic–textual representations. Thereafter, the students' test performance and ML were assessed. The level of perceived stress and the salivary cortisol concentration were measured before and after the test and again a few minutes later. Additionally, heart rate variability parameters were assessed continuously. We found a strong preference of the test version with symbolic representations. Additionally, the students showed better test performance and lower ML when they worked with symbolic representations. However, the level of perceived stress was comparable between both groups and there was no strong physiological stress response: The cortisol concentration decreased in both groups and the heart rate was relatively similar. However, during the second half of the test, we observed a significantly higher ratio between low and high heartbeat frequencies in the group with symbolic–textual representations and we found an indirect influence of the kind of representation on test performance through its effect on ML. The poorer test performance and higher ML in connection with symbolic–textual representations confirm previous studies, which found that symbolic–textual representations pose major problems for students. Thus, teachers should enable students to understand symbolic–textual representations and consider carefully whether they can use symbolic representations instead, especially when they teach complex content. 相似文献
323.
AbstractRussia’s (and the USSR’s) use of sports mega-events (SMEs) makes this BRICS country (Brazil, Russia, India, China, and South Africa) not only an outlier among emerging states, but also among key SME hosts generally. Both the historic Moscow Olympics (1980) and the more recent hosting of the 2014 Sochi Winter Olympics provide evidence that Russia has, on both occasions, focussed on geopolitical priorities using hard power (military might) at the expense of soft power acquisition. Furthermore, both Olympics were, first and foremost, used to pursue domestic soft power goals. This, again, makes Russia an outlier in terms of the political use of SMEs by states in the literature on this subject. The 1980 Olympic Games, therefore, in terms of their potential to generate soft power and national unity, turned out to be a mis-used opportunity for Russia. To what extent is this specific to Russia and could the first Russian Olympics provide valuable insight into the modern-day hosting of SMEs by Russia (2014/2018)? 相似文献
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