Comparison of anxiety levels of students in introductory earth science and geology courses     

Mary E. Westerback  Clemencia Gonzalez  Louis H. Primavera 《科学教学研究杂志》1984,21(9):913-929

Students in geology and earth science courses were not anxious about taking these courses as measured by the State-Triat Anxiety Inventory. Students in each course were split into two grade groups. It was shown that students whose grades were in the higher group had low anxiety, which continued to be reduced during the course. Students in the lower grade group had high anxiety, which increased during the course. There was no difference between anxiety scores of males and females. In general, students who planned to elect additional courses had lower state anxiety and higher grades than students who did not plan to elect additional courses in geology and earth science.  相似文献   

Teacher counter stories to a citizenship education mega policy narrative. Preparing for citizenship in Chile     

Eduardo Cavieres-Fernández 《课程研究杂志》2017,49(4):414-436

The present article focuses on the counter stories of two Chilean social studies high school teachers. Counter stories describe how teachers use their professional experience to confront those mega narratives composed of dominant educational policies that impinge upon their pedagogical practices. The mega narrative described in this study as a citizenship education mega policy narrative is composed by citizenship educational guidelines that have become influenced by other market-driven educational policies, and is not only present in Chile but has also been influenced by policies coming from countries such as England and the US. Therefore, the discussions that emerge from these counter stories on the nature of this mega narrative and the ways through which teachers can confront it through their teaching, and the implications that all this has for the field of citizenship education, do not only fill a gap in Chilean research but also contribute to discussions on counter and mega narratives in the field of citizenship education within a wider international scope.  相似文献   

Ethnic Identity Development and Acculturation Preferences Among Minority and Majority Youth: Norms and Contact          下载免费PDF全文

Roberto González  Brian Lickel  Manisha Gupta  Linda R. Tropp  Bernadette P. Luengo Kanacri  Eduardo Mora  Pablo De Tezanos‐Pinto  Christian Berger  Daniel Valdenegro  Oscar Cayul  Daniel Miranda  Patricio Saavedra  Michelle Bernardino 《Child development》2017,88(3):743-760

This article tests a longitudinal model of the antecedents and consequences of changes in identification with indigenous (Mapuche) among indigenous and nonindigenous youth in Chilean school contexts over a 6‐month period (633 nonindigenous and 270 Mapuche students, M_ages = 12.47 and 12.80 years, respectively). Results revealed that in‐group norms supporting contact and quality of intergroup contact at Time 1 predicted student's changes in Mapuche identification at Time 2, which in turn predicted changes in support for adoption of Chilean culture and maintenance of Mapuche culture at Time 2; some of the relationships between these variables were found to be moderated by age and ethnicity. Conceptual and policy implications are addressed in the Discussion .  相似文献   

Signal constellations in the hyperbolic plane: A proposal for new communication systems     

Eduardo Brandani da Silva  Marcelo Firer 《Journal of The Franklin Institute》2006,343(1):69-82

Signal constellations in the hyperbolic plane are provided as an alternative to traditional signal constellations in the Euclidean plane, since channels may actually exist for which the latter signal constellations are not as suitable as the former. A hyperbolic gaussian probability density function, based solely on geometrical considerations, is derived to determine the performance of the hyperbolic signal constellations. Benefits result from an approach conceived in terms of reduced signal-to-noise ratio, needed to achieve a prescribed error rate and equivalent optimum receiver complexity.  相似文献   

Cross-over, thresholds, and interactions between science and technology: lessons for less-developed countries     

Américo Tristão Bernardes  Eduardo da Motta e Albuquerque 《Research Policy》2003,32(5):865-885

Presently, science is an important precondition for the economic development of less-developed countries. This paper discusses the specific roles that science has at initial stages of development, pointing to its contributions for the countries’ absorptive capability. Furthermore, this paper specifies the role of science for initiating a positive interaction with technological development, since initial stages of development and during catching up processes. For less-developed countries, neither the linear model of technology nor an “inverted linear model” would take place: a more interactive approach is necessary for development. Using statistics of patents (USPTO) and scientific papers (ISI) for 120 countries (1974, 1982, 1990, and 1998), this paper analyses some evidences on thresholds levels of scientific production to originate an interactive relationship between science and technology. These data also document that the value of this threshold seems to double from one period to another. Although this paper presents tentative results, some policy implications are discussed: scientific institutional building must be seen as a component of modern industrial policies.  相似文献   

The influence of high-stakes testing on teacher self-efficacy and job-related stress     

Alejandro Gonzalez  Michelle L. Peters  Amy Orange  Bettye Grigsby 《Cambridge Journal of Education》2017,47(4):513-531

In the United States, teachers’ job-related stress and self-efficacy levels across all grades are influenced in some manner by the demands of high-stakes testing. This sequential mixed-methods study aimed at examining the dynamics among assigned subject matter, teacher job-related stress, and teacher self-efficacy in a large south-eastern Texas school district. Quantitative data were collected via the High Stakes Testing on Self-Efficacy and Teacher Stress Survey from a convenience sample of 145 teachers, while qualitative data were gathered during focus-group sessions at the elementary, middle and high school levels. Findings indicated that assigned subject matter did not influence teacher self-efficacy, but did influence teachers’ job-related stress. Additionally, a relationship was found to exist between teacher job-related stress and teacher self-efficacy. Teachers reported lack of time, modifications to curriculum, and testing of special education populations as contributions to their job-related stress, and school leadership and educational triage as impacting their teacher self-efficacy.  相似文献   

Zoom invigilated exams: A protocol for rapid adoption to remote examinations     

Kelly Linden  Prue Gonzalez 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(4):1323-1337

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A Complex Systems Network Approach to Quantifying Peer Effects: Evidence From Ghanaian Preprimary Classrooms     

Sharon Wolf  Manuel S. Gonzalez Canche  Kristen Coe 《Child development》2021,92(6):e1242-e1259

Research on classroom peer effects has focused nearly exclusively on high-income countries and on academic skills. Little is known about peer effects in low-income countries and whether effects differ under different educational environments (e.g., teacher-directed versus child-centered, conditions of concentrated advantage or disadvantage). Based on a data set of Ghanaian preprimary classrooms in the Greater Accra Region collected in the 2015–2016 school year, we use complex system networks with multilevel modeling to study the presence and magnitude of peer effects. Results corroborated small statistically significant effects on academic and nonacademic skills (d = .06–.10). Peer effects on literacy were larger for children in public schools, who are relatively more disadvantaged than their private school counterparts. Teacher-directivity intensity did not moderate peer effects.  相似文献   

Preschool Self-Regulation and Preacademic Skills as Mediators of the Long-Term Impacts of an Early Intervention     

Dana C. McCoy  Kathryn Gonzalez  Stephanie Jones 《Child development》2019,90(5):1544-1558

This study explores children's early academic and self-regulatory skills as potential pathways through which a preschool enrichment program—the Chicago School Readiness Project (CSRP)—may contribute to low-income children's long-term outcomes (N = 466; M_age at baseline = 4.10 years). We find that CSRP's impact on high school grades may be partially explained by early gains in vocabulary and math skills. Although impacts on high school executive function (EF) were more equivocal, our results suggest that early improvements in math skills attributable to the intervention may, in turn, predict long-term gains in EF skills. These results complement the existing literature on preschool fade out, while also shedding light on the cross-domain relations between academic and self-regulatory skills.  相似文献   

George Glasson and George Bogg��s prospects on the environmental friendly relationship and ecojustice     

Eduardo Dopico 《Cultural Studies of Science Education》2011,6(2):347-350

This rejoinder to George Glasson and George Bogg’s papers provides additional conversation for considering the idea that we try to develop: leaving the classroom to continue teaching. Converting the teaching–learning process into research experiences brings our students not only scientific knowledge, but also an understanding of the research procedures. To be involved in field work, students can connect more personally the local action with global issues. On the ground in which we operate, environmental science, teaching of knowledge is insufficient if not accompanied by ecological experiences where students can see and share the needs of environmental protection and the idea of sustainability. Both response authors tell us about their own experiences in research in this regard. In their essays we can appreciate the desire to investigate human activities on ecosystems. Reading it makes us look with passion and awareness at the different consequences for our ecological environments: if we develop environmentally consequential behavior or harmful lifestyles for the planet. Furthermore, they warn us of the need to follow the development of students learning and reflect on the ways in which it produces time-causal relationship between persons and the environment.  相似文献