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941.
We examined preschool children's use of count information in making quantity judgments. Study 1 involved 35 children 3–5 years old using a balance-scale task to judge relative quantity with or without count information provided. Study 2 replicated and extended the exploration as 54 children 3–4 years old judged relative quantity in multiple counting contexts. Children who were given count information successfully used count information in quantity evaluation when visual cues were not useful. Limited experience of counting skills, strategy choice, and limited processing capacity are each discussed as potential explanations. Implications for early childhood practice and teacher education, as well as directions for future research are explored.  相似文献   
942.
Research-based digital games hold great potential to be effective tools in supporting next-generation science learning. However, as with all instructional materials, teachers significantly influence their implementation and contribute to their effectiveness. To more fully understand the contributions and challenges of teacher implementation of digital games, we studied the replacement of existing high school biology genetics lessons over a 3- to 6-week period with Geniverse, an immersive, game-like learning environment designed to be used in classrooms. The Geniverse materials infuse virtual experimentation in genetics with a narrative of a quest to heal a genetic disease; incorporate the topics of meiosis and protein synthesis with inheritance; and include the science practices of explanation and argumentation. The research design involved a quasi-experiment with 48 high school teachers and about 2000 students, student science content knowledge and argumentation outcome measures, and analysis using hierarchical linear modeling. Results indicate that when Geniverse was implemented as the designers intended, student learning of genetics content was significantly greater than in the comparison, business-as-usual group. However, a wide range of levels of Geniverse implementation resulted in no significant difference between the groups as a whole. Students’ abilities to engage in scientific explanation and argumentation were greater in the Geniverse group, but these differences were not statistically significant. Observation, survey, and interview data indicate a range of barriers to implementation and teacher instructional decisions that may have influenced student outcomes. Implications for the role of the teacher in the implementation of game-based instructional materials are discussed.  相似文献   
943.
In this article we explore examples of public pedagogical actions and interventions, reading them through a social justice education framework lens. In our discussion we start with definitions of social justice, public pedagogy and case study methodologies. Then, we look at a variety of international examples to highlight the pervasiveness of public pedagogical opportunities in visual culture that include a festival, an individual, a citywide symposium, an online community, a cultural group and a museum exhibition. They are divided into three categories based on social justice principles suggested by Ayers et al. and later interpreted by Dewhurst: (1) Public pedagogy and social justice is rooted in people's experiences: Fiesta del Señor de Choquekillka: Ollantaytambo, Peru and Janet Weight Reed – an artist's public pedagogy utilising social media; (2) Public pedagogy and social justice is a process of reflection and action together: Ideas City Festival and the Vlogbrothers; (3) Public pedagogy and social justice seeks to dismantle systems of inequality to create a more humane society: CULTURUNNERS and sh[OUT]: Lesbian, Gay, Bisexual, Transgender and Intersex art and culture. It is our hope that in looking more closely at these international examples of public pedagogy and social justice education that the power of such alternative sites of learning is apparent and encourages further interventions and investigations in such spaces of inquiry.  相似文献   
944.
Abstract

This paper documents the process of utilizing Twitter for a doctoral dissertation in rugby governance, and highlights the key benefits of using Twitter as a research tool. Research followed a case study approach to delve into the four major uses of Twitter: (1) a warning system for dramas or incidents relating to one’s research field; (2) data collection; (3) finding and recruiting research subjects; and (4) building a personal research brand. The research design used a mixed method approach that combined qualitative and quantitative analysis methods. The findings serve as the basis for the pursuit of more detailed future research with Twitter as the principal medium in focus within the area of sport.  相似文献   
945.
Little is known about whether physical activity compensation occurs and, if so, what are potential moderators of such responses. This study examined whether children’s physical activity, sedentary time and energy expenditure on one day was associated with these behaviours the following day, and what factors may moderate observed associations. One hundred and twenty-seven children (8–11 years) wore an ActiGraph accelerometer for eight days. Time spent in sedentary time and physical activity was obtained. Daily energy expenditure was also assessed using a SenseWear Armband (n=98). Moderators examined were sex, age, BMI, fitness, and fundamental movement skills (FMS). Multilevel analyses were conducted using generalized mixed models. On any given day, every additional 10 minutes spent in moderate-to-vigorous physical activity (MVPA) was associated with 9.3 minutes less MVPA the following day. Every additional 10kcal expended on one day was associated with 2.9 fewer kcal expended the following day. Additional time spent sedentary on any given day was associated with less light physical activity the following day in children with lower FMS. The results are largely consistent with the compensation hypothesis, with children appearing to compensate their activity between days. Strategies to minimise potential compensatory changes may be needed for children overall rather than for specific population sub-groups.  相似文献   
946.
Impact loading in athletes participating in various sports has been positively associated with increased bone mineral density (BMD), but this has not been investigated in elite Kenyan runners. Body composition and site-specific BMD measures quantified with dual x-ray absorptiometry were measured in 15 elite male Kenyan runners and 23 apparently healthy South African males of different ethnicities. Training load and biomechanical variables associated with impact loading, such as joint stiffness, were determined in the elite Kenyan runners. Greater proximal femur (PF) BMD (g · cm?2) was higher (P = 0.001, ES = 1.24) in the elite Kenyan runners compared with the controls. Six of the 15 (40%) Kenyan runners exhibited lumbar spine (LS) Z-Scores below ?2.0 SD, whereas this was not found in the apparently healthy controls. PFBMD was associated with training load (r = 0.560, P = 0.003) and ankle (r = 0.710, P = 0.004) and knee (r = 0.546, P = 0.043) joint stiffness. Elite Kenyan runners exhibit greater PFBMD than healthy controls, which is associated with higher training load and higher joint stiffness. Our results reaffirm the benefits of impact loading on BMD at a weight-bearing site, while a high prevalence of low LSBMD in the elite Kenyan runners is hypothesised to be the result of a mismatch between energy intake and high training load. Future research investigating energy availability in Kenyan runners and the possible association with musculoskeletal injury should be investigated.  相似文献   
947.
In this conceptual article, the authors argue that diversity is an invitation to educators, youth, families, and community members to work together—a goal accomplished only by centering the local community rather than the local school—to educate youth and create a more just society. Based upon liberatory and emancipatory education, liberatory public education, an intersectional conceptual framework, brings together recent and current justice-oriented scholarship focused on youth development, curriculum and pedagogy, schooling, and community liberation, making a parallel case for justice-oriented family engagement in public schooling. The authors conclude with implications for teacher education, education policy, and family engagement scholarship.  相似文献   
948.
Writing is a complex and difficult skill for many middle-level students. Therefore, teachers must invest considerable time and apply evidence-based instructional approaches when teaching writing. This article describes the self-regulated strategy development (SRSD) approach to teaching writing and provides examples of each step of the approach with ideas for differentiating strategy-based writing instruction for middle-level students.  相似文献   
949.
In this phenomenological study, the authors interviewed 4 African American male counselor educators about their social justice efforts. Resulting themes were lifelong commitment to social justice, reaction to resistance, professional and personal support, and the meaning of social justice work. Findings suggest that social justice work can increase professional resilience for African American male counselor educators.  相似文献   
950.
The authors examined the relative stability and variability of self-regulated learning (SRL) in kindergartners across various contexts (teacher-directed activities, small-group work, and independent work). They assessed the role of temperament and context on children's use of SRL while seeking to identify if there are optimal contexts for promoting SRL in particular children. The results revealed that although temperament was not related to SRL, children's regulation strategy usage was heavily dependent on context, contradicting the idea that children are either high or low self-regulators. The relative stability of SRL varied by child, with some children showing more sensitivity to context than did others. Optimal contexts for eliciting SRL also differed by children, with some children exhibiting elevated regulation during small-group activities and others during teacher-directed activities.  相似文献   
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