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251.
252.
The efficacy of placing students with special needs in inclusive classrooms may depend in part on how instructional factors contribute to student outcomes. Differences in frequencies and levels of cognitive engagement of interactions among nine teachers in inclusive elementary classrooms were related to three other variables: teachers' ratings on the Pathognomonic-Interventionist (PATH/INT) Scale, students' designation either as exceptional or at-risk (EX/AR) or as typically achieving (TA), and students' scores on the Piers Harris Children's Self-Concept Scale. Teachers with PATH beliefs, who attribute learning difficulties to permanent characteristics of the student that are beyond the teacher's mandate, interacted infrequently with their EX/AR students at low levels of cognitive engagement. Teachers with INT beliefs, who see themselves as responsible for the achievement of all their students irrespective of their disabilities, interacted with all students more frequently, and at higher levels of cognitive engagement. In contrast to the PATH teachers, their EX/AR students received more instructional interactions than their TA students. As expected, the EX/AR students in all classrooms had lower Piers Harris Self-Concept Total Scale scores than typically achieving students. However, both TA and EX/AR students had lower Self-Concept Total Scale scores in the classrooms of teachers with PATH beliefs, compared to students in the classrooms of INT teachers. The relationship is discussed between teachers' beliefs, their different patterns of instructional interactions with students with and without disabilities in inclusive classrooms, and the possible impact of instructional interventions on students' self-concept.  相似文献   
253.
Abstract

Environmental educators in both formal and informal settings work to develop students’ environmental literacy, with the goal of developing adult citizens who care about the environment and are knowledgeable and prepared to engage in behaviours to address environmental issues. Yet little attention has been paid to educator environmental literacy. Here we report the findings from an interview study of formal educators from K-12 settings and informal educators from out-of-school settings. Overall, educators favoured personal-level behaviours. In addition, some educators reported poor environmental self-efficacy for three main reasons: the scale of the problem, other negative environmental behaviour that offsets positive behaviour, and the need for system-level behaviour Educators rarely engaged in system-level behaviour due to distrust of the system, inexperience, and the rejection of political or activist identity.  相似文献   
254.
Students who fail algebra are significantly less likely to graduate on time, and algebra failure rates are consistently high in urban districts. Identifying effective credit recovery strategies is critical for getting students back on track. Online courses are now widely used for credit recovery, yet there is no rigorous evidence about the relative efficacy of online versus face-to-face credit recovery courses. To address this gap, this study randomly assigned 1,224 ninth graders who failed algebra in 17 Chicago public high schools to take an online or face-to-face algebra credit recovery course. Compared to students in face-to-face credit recovery, students in online credit recovery reported that the course was more difficult, were less likely to recover credit, and scored lower on an algebra posttest. There were no statistically significant differences by condition on any outcomes measured during the second year of high school (standardized mathematics test and algebra subtest scores, likelihood of passing subsequent math classes, cumulative math credits, or on-track rates). The benefits and challenges of online learning for credit recovery are discussed in light of the findings to date.  相似文献   
255.
256.
Using narrative inquiry, these authors explored the diverse types of reasoning that seem to direct stakeholders’ approaches to educational decision-making. They labeled these approaches as simple, complicated, and complex. They begin their account by explaining the attributes of narrative inquiry that guided their work. Through the scholarly space their conversations created, they charted distinctions within the field of education between simple, complicated, and complex reasonings and solutions. They then turned to a selection of anchor texts from existing scholarship that furthered their grasp of these three approaches and their application to educational challenges. As suggested by the title, their ultimate leanings favored complexity. In combination, their ideas strengthened a claim that the choice of a decision making option differentially influences policy and classroom actions.  相似文献   
257.
Personalized genomics companies (PG; also called ‘direct-to-consumer genetics’) are businesses marketing genetic testing to consumers over the Internet. While much has been written about these new businesses, little attention has been given to their roles in science communication. This paper provides an analysis of the gene concept presented to customers and the relation between the information given and the science behind PG. Two quite different gene concepts are present in company rhetoric, but only one features in the science. To explain this, we must appreciate the delicate tension between PG, academic science, public expectation, and market forces.  相似文献   
258.
Postgraduate students involved in delivering undergraduate teaching while working toward a research degree are known as graduate teaching assistants (GTAs). This study focused upon the problems and benefits arising from this dual role as researchers and teachers, as perceived by GTAs at the University of Cambridge. To this end, GTAs at Cambridge were invited to participate in an online survey (n?=?153). Teaching is seen to offer a wide range of benefits to GTAs, including benefits to the GTAs’ own research, transferable skills development, career development and teaching skills. Time pressures emerged as the principal problem associated with the role. The data are consistent with findings from previous studies, while also providing further detail about the nature of the benefits and problems. In particular, additional insights are offered relating to benefits and problems associated with different teaching activities, and disciplinary differences.  相似文献   
259.
ABSTRACT

The effects of acute ingestion of nitrate on short-duration repeated sprint performance (RSP) are unclear. This study investigated the effect of acute ingestion of beetroot juice on a test of RSP in team sport athletes. Sixteen male team sport athletes undertook four trials using a 40 m maximum shuttle run test (MST), which incorporates 10 × 40 m shuttle sprints with 30 s between the start of each sprint. Two familiarisation trials, followed by nitrate-rich beetroot juice (BR; ~6 mmol nitrate) and nitrate-depleted beetroot juice (PLA; ~0.0034 mmol nitrate) trials were completed in a randomised, double-blind manner. Ingestion of beetroot juice 3 h prior to exercise elevated plasma nitrate concentrations ~6-fold in BR (BR, 413 ± 56 μM; PLA, 69 ± 30 μM; P < 0.001). RSP, assessed by sprint performance decrement (Sdec; %), did not differ (P = 0.337) between BR (5.31 ± 2.49%) and PLA (5.71 ± 2.61%). There was no difference between trials for total sprint time (P = 0.806), fastest sprint (P = 0.341), slowest sprint (P = 0.787), or post-exercise blood lactate concentration (BR, 11.8 ± 2.5 mM; PLA, 12.2 ± 2.3 mM; P = 0.109). Therefore, acute ingestion of beetroot juice did not improve a test of short-duration RSP in team sport athletes.  相似文献   
260.
The Supporting Effective Teaching (SET) project consists of studies that examine the relationship between elementary general education teachers' beliefs about disability and ability and their roles in inclusive classrooms, and how these are related to teaching practices. Teaching effectiveness is operationally defined as multiple dimensions of teaching practices observed in inclusive classrooms. This paper examines previously reported and newly completed studies that investigate the characteristics of teachers in inclusive classroom settings, what they believe about their roles and responsibilities and about their students' learning, and how their beliefs relate to their teaching effectiveness with students both with and without disabilities.  相似文献   
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