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91.
Spencer Shannon Huczek George Muir Bradley 《Journal of Science Education and Technology》1998,7(1):31-43
A student-scientist partnership outreach program was funded by the U.S. National Aeronautics and Space Administration's Boreal Ecosystem-Atmosphere Study (BOREAS) to involve students and teachers in scientific investigations pertinent to global change research occurring within the boreal region of Canada. Boreal Forest Watch was planned, designed and piloted by an interdisciplinary group of education and science professionals from the University of New Hampshire, the Prince Albert National Park, and several schools in central Saskatchewan, Canada. A two goal approach was adopted to 1) ensure the educational significance of the program and 2) introduce scientifically valid methods for collection of research data pertinent to global change scientists. Professional educators and school administrators from Saskatchewan were recruited to assist in project planning to ensure that the proposed activities fit within the existing curriculum framework. This process was essential for successful adoption of the program by participating teachers. The process and approach of initiating Boreal Forest Watch are presented in this paper. This program became fully functional in September, 1996 with the training of several participating teachers. Perspectives of the program and its future are provided by members of the design team. Boreal Forest Watch is a unique opportunity for both Canadian students and their teachers to explore their natural environment, learn scientific methods and principles, and contribute data to the global change research community. 相似文献
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93.
Tracey Muir Kim Beswick John Williamson 《Asia-Pacific Journal of Teacher Education》2010,38(2):129-146
This paper provides an account of professional learning in action through documenting the experiences of three upper primary teachers as they engaged in reflection-on-action with the assistance of an academic mentor. Video-stimulated recall was used as a mechanism to encourage productive reflective practice, using video footage of each teacher's numeracy lessons. The results indicated that although it was a powerful medium for stimulating reflection, and the teachers indicated that it was a beneficial process, there was limited evidence to suggest that it resulted in substantial changes to their practices. Reasons for this are hypothesised and recommendations made for personalising professional learning to cater for the needs and context of individual teachers. 相似文献
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We outline the evolution of a computerised systematic observation tool and describe the process for establishing the validity and reliability of this new instrument. The Coach Analysis and Interventions System (CAIS) has 23 primary behaviours related to physical behaviour, feedback/reinforcement, instruction, verbal/non-verbal, questioning and management. The instrument also analyses secondary coach behaviour related to performance states, recipient, timing, content and questioning/silence. The CAIS is a multi-dimensional and multi-level mechanism able to provide detailed and contextualised data about specific coaching behaviours occurring in complex and nuanced coaching interventions and environments that can be applied to both practice sessions and competition. 相似文献
96.
William AE Aguilar-Roca NM Tsai M Wong M Beaupré MM O'Dowd DK 《CBE life sciences education》2011,10(4):346-356
This study evaluates the impact of an independent postmidterm question analysis exercise on the ability of students to answer subsequent exam questions on the same topics. It was conducted in three sections (~400 students/section) of introductory biology. Graded midterms were returned electronically, and each student was assigned a subset of questions answered incorrectly by more than 40% of the class to analyze as homework. The majority of questions were at Bloom's application/analysis level; this exercise therefore emphasized learning at these higher levels of cognition. Students in each section answered final exam questions matched by topic to all homework questions, providing a within-class control group for each question. The percentage of students who correctly answered the matched final exam question was significantly higher (p < 0.05) in the Topic Analysis versus Control Analysis group for seven of 19 questions. We identified two factors that influenced activity effectiveness: 1) similarity in topic emphasis of the midterm-final exam question pair and 2) quality of the completed analysis homework. Our data suggest that this easy-to-implement exercise will be useful in large-enrollment classes to help students develop self-regulated learning skills. Additional strategies to help introductory students gain a broader understanding of topic areas are discussed. 相似文献
97.
Although communist ideology claimed to destroy former class stratification based on labour market capitalist relationships, de facto during socialism one social class hierarchy was substituted for another that was equally unequal. The economic transition during the 1990s increased stratification by wealth, which affected educational inequality. This study examines the relationships among parental education, gender, educational expectations and mathematics achievement of youths in five post-socialist Eastern European countries, comparing them with three Western countries. We employed the 8th-grade data from the Trends in International Mathematics and Science Study (TIMSS) 1995 and 2007. The findings point to the universal associations between parental education and student outcomes, whereas gender comparisons present interesting East-West differences. The theoretical and policy implications of these findings are discussed. 相似文献
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The Angoff method requires experts to view every item on the test and make a probability judgment. This can be time consuming when there are large numbers of items on the test. In this study, a G-theory framework was used to determine if a subset of items can be used to make generalizable cut-score recommendations. Angoff ratings (i.e., probability judgments) from previously conducted standard setting studies were used first in a re-sampling study, followed by D-studies. For the re-sampling study, proportionally stratified subsets of items were extracted under various sampling and test-length conditions. The mean cut score, variance components, expected standard error (SE) around the mean cut score, and root-mean-squared deviation (RMSD) across 1,000 replications were estimated at each study condition. The SE and the RMSD decreased as the number of items increased, but this reduction tapered off after approximately 45 items. Subsequently, D-studies were performed on the same datasets. The expected SE was computed at various test lengths. Results from both studies are consistent with previous research indicating that between 40–50 items are sufficient to make generalizable cut score recommendations. 相似文献
100.
Contextualizing Gay‐Straight Alliances: Student,Advisor, and Structural Factors Related to Positive Youth Development Among Members
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V. Paul Poteat Hirokazu Yoshikawa Jerel P. Calzo Mary L. Gray Craig D. DiGiovanni Arthur Lipkin Adrienne Mundy‐Shephard Jeff Perrotti Jillian R. Scheer Matthew P. Shaw 《Child development》2015,86(1):176-193
Gay‐straight alliances (GSAs) may promote resilience. Yet, what GSA components predict well‐being? Among 146 youth and advisors in 13 GSAs (58% lesbian, gay, bisexual, or questioning; 64% White; 38% received free/reduced‐cost lunch), student (demographics, victimization, attendance frequency, leadership, support, control), advisor (years served, training, control), and contextual factors (overall support or advocacy, outside support for the GSA) that predicted purpose, mastery, and self‐esteem were tested. In multilevel models, GSA support predicted all outcomes. Racial/ethnic minority youth reported greater well‐being, yet lower support. Youth in GSAs whose advisors served longer and perceived more control and were in more supportive school contexts reported healthier outcomes. GSA advocacy also predicted purpose. Ethnographic notes elucidated complex associations and variability as to how GSAs operated. 相似文献