Graphenes — Aromatic giants

Recently, extremely large benzenoid hydrocarbons have been synthesized. These compounds resemble graphite in many ways, and have been named graphenes. Because of their nonstandard properties, graphenes have already found numerous applications, especially as special-purpose materials in electronics. In this article we outline the basic chemical facts on graphenes.     

Evaluating the Effectiveness of Physlet-Based Materials in Supporting Conceptual Learning About Electricity

To provide a good understanding of many abstract concepts in the field of electricity above that of their students is often a major challenge for secondary school teachers. Many educational researchers promote conceptual learning as a teaching approach that can help teachers to achieve this goal. In this paper, we present Physlet-based materials for supporting conceptual learning about electricity. To conduct research into the effectiveness of these materials, we designed two different physics courses: one group of students, the experimental group, was taught using Physlet-based materials and the second group of students, the control group, was taught using expository instruction without using Physlets. After completion of the teaching, we assessed students’ thinking skills and analysed the materials with an independent t test, multiple regression analyses and one-way analysis of covariance. The test scores were significantly higher in the experimental group than in the control group (p < 0.05). The results of this study confirmed the effectiveness of conceptual learning about electricity with the help of Physlet-based materials.     

Gender and higher education experience: a case study

This research seeks to contribute to current discussion of gender differences in experience of higher education. Its specific focus is to compare the assessment of various university services by male and female students. The research sample consisted of 9793 students who participated in three University of Western Sydney surveys in 2004 and 2005. The results suggest that, first, female students place higher importance on the majority of the university’s services than do male students; second, as female students advance through their studies, they appear more demanding about the quality of services, while male students remain comparatively tolerant; and third, while all students consider that some areas warrant improvement, this is significantly more so for female than for male students. Specifically, the key areas for improvement from female students’ perspective are the relevance and instructional clarity of the course and efficiency of administration. It is recommended that, considering the current trends in higher education across gender, a sharper focus on these areas for improvement action could help the university ensure equity and better manage competition.     

Understanding and Changing Older Adults' Perceptions and Learning of Social Media

An exploratory study was conducted to answer the following questions: What are older adults' perceptions of social media? What educational strategies can facilitate their learning of social media? A thematic map was developed to illustrate changing perceptions from the initial unanimous, strong negative to the more positive but cautious and to the eventual willingness to actually contribute content. Privacy was the primary concern and key perceptual barrier to adoption. Effective educational strategies were developed to overcome privacy concerns, including: 1) introducing the concepts before introducing the functions; 2) responding to privacy concerns; and 3) making social media personally relevant.     

The Freedom to Teach

Maintaining that academic freedom is necessary if schools are to function effectively, Dr. Dahl presents lucid arguments to support his position.     

The deterioration and mobilization effects of trauma on social support: childhood maltreatment and adulthood military violence in a Palestinian community sample

OBJECTIVES: To show that exposure to childhood maltreatment deteriorates, whereas exposure to adulthood military violence mobilizes social support; second, to show that associations between traumatic events and mental health problems are mediated through social support and, subsequently, adulthood military violence is associated with low level and childhood maltreatment with high level of mental health symptoms; third, to explore whether the moderating (protecting) effect of sufficient and satisfactory social support would differ among victims of childhood maltreatment and adulthood military violence. METHOD: The participants were a random-sample of Palestinian men and women (n=585) of 16-60 years of age. Exposure to military violence in adulthood was assessed by the Harvard Trauma Questionnaire (HTQ_I), and to childhood maltreatment by a 13-item questionnaire developed for the study. A Social Network Schedule was applied to assess the function, source, and satisfaction with social support, and the Revised SCL90-R Symptoms Checklist to assess mental health symptoms. RESULTS: Findings supported our hypothesis that exposure to childhood maltreatment was associated with low levels of social support, whereas exposure to adulthood military violence was associated with high levels of social support. Contrary to our second hypothesis, both childhood maltreatment and adulthood military violence were associated with high levels of mental health symptoms. Finally, high level and satisfactory social support moderated the association between exposure to military violence in adulthood and mental health symptoms, but not between childhood maltreatment and mental health symptoms. CONCLUSION: The findings emphasize that the nature of trauma, that is, whether familial or political, determines the availability of protective resources versus vulnerability, which should be considered when tailoring interventions to trauma victims.     

Teachers or learning leaders?: where have all the teachers gone? gone to be leaders,everyone

This paper traces the dramatic proliferation of leadership roles in English primary and secondar schools, due mainly to central government education policy of the past two decades. This has transformed schools from relatively simple to highly complex organizations and has impacted on the working conditions of, and demands on, teachers, together with many aspects of schooling. These changes are illustrated with typical examples of schools' leadership structures and their functioning. Interview data provide teachers' views on, and reactions to, the changes in school leadership. The paper also reviews the ways in which teacher education institutions have responded in terms of providing initial and in‐service education and training to equip the profession for this new and developing challenge. It examines the reception of such programmes by teachers and the reported impact on schools' management and the role of leadership within it.     

Investigating errors of beginning mathematicians

Diagnostic interviews were conducted with children in their third year at a Melbourne primary school to determine why they had made errors on sixteen arithmetical tasks. The Newman method of analyzing errors was modified in order that the children's errors could be sensibly classified in terms of the sequence of steps they used when attempting to solve the problems. The diagnostic interviews clearly showed where children were making their errors, and this enabled their teacher to devise more appropriate teaching procedures.