Redesigning academic essays to promote teacher reflection on selected issues of learning and teaching related to the current educational reform in Hong Kong

Teachers in Hong Kong have faced constant demand for practice renewal due to successive waves of educational reforms in the past decade. This paper describes the design of an assignment structure that promotes teacher reflection on important issues related to a major education reform in Hong Kong. This particular assignment structure includes three components – self-reflection, understanding alternative perspectives and situated analysis. Teachers are expected to complete these components in a sequence. The design addresses teachers’ teaching experiences, engages them in learning alternative perspectives, and assists them to juxtapose self-reflection and alternative perspectives in analysing commonly encountered teaching situations. An evaluation of teachers’ levels of reflection in these assignments showed that both high- and low-scored teachers improved their reflection. Based on the findings of an interview study, this paper reported a grounded model explaining how this innovative assignment structure promotes reflection. The model situated the reflective assignments within the local teaching context in Hong Kong and highlighted the importance of different forms of assistance and guidance in facilitating teachers’ reflective engagement in completing these cognitively demanding assignments.     

Perception of what works for teachers of students with EBD in mainstream and special schools in Hong Kong

This study focuses on teachers' perception of what works for them in managing students with emotional and behavioral difficulties (EBD). The main purpose is to compare the current findings in mainstream schools with the study that was conducted in special schools in 2006–2007 to see if there are any discrepancies of approaches implemented by teachers. This recent study was carried out in 11 mainstream schools involving 102 teachers. It is compared to the seven special schools with 89 teachers. Focus group interviews with the same open-ended questions were adopted for both studies. Findings indicated that the majority of the strategies perceived by both groups of teachers as helpful were very similar, and they can be classified under eight major categories. In collating all the approaches deemed supportive in working with EBD students, a holistic conceptual framework is delineated to address the complexities of managing emotional and behavioral disturbances.     

An examination of school accountability from the perspective of Singapore school leaders

School accountability is such a familiar concept in many education systems that questions about what it actually means and entails are rather uncommon, especially to busy practitioners on the ground. This paper reports a research that examines each of the questions of what and to whom Singapore schools are accountable, from the point of practitioners holding leadership positions in Singapore schools. This research was a qualitative study with a sample of 36 vice-principals. This analysis was enriched and interpreted with a literature-based discussion, which pointed out the implications of the research findings. According to the findings, the participants felt that Singapore schools were accountable for students’ holistic development; site, funding and staff management; national survival and nation building; and humanity and the future. Singapore schools were accountable to students, parents, country and citizens, and themselves. Interestingly, for a system that was reputed for its academic achievement, none of the participants mentioned examination results directly but referred to the importance of holistic education. The findings also suggested an inseparability of the concepts ‘accountability’ and ‘responsibility’ in the participants’ minds.     

Training Level, Acculturation, Role Ambiguity, and Multicultural Discussions in Training and Supervising International Counseling Students in the United States

This research partially replicated Nilsson and Anderson’s Professional Psychology: Research and Practice (2004) study on training and supervising international students. It investigated the relationships among international counseling students’ training level, acculturation, supervisory working alliance (SWA), counseling self-efficacy (COSE), role ambiguity (RA) and multicultural discussion (MD) in supervision. In the present study (N = 71), two acculturation variables and RA predicted SWA. SWA and MD did not predict COSE, while language use in acculturation did. Training level differences were only associated with COSE. Findings indicate that supervisors should attend to role ambiguity and multicultural issues when supervising international students, including acculturation issues and their impact on students’ performance. Results are discussed against Nilsson and Anderson’s original study and the implications for supervision of international counseling students.     

Investigating the effectiveness of computer simulations for chemistry learning

Are well‐designed computer simulations an effective tool to support student understanding of complex concepts in chemistry when integrated into high school science classrooms? We investigated scaling up the use of a sequence of simulations of kinetic molecular theory and associated topics of diffusion, gas laws, and phase change, which we designed and experimentally tested. In the two effectiveness studies reported, one in a rural and the other in an urban context, chemistry teachers implemented two alternate versions of a curricular unit—an experimental version, incorporating simulations, and a control version, using text‐based materials covering the same content. Participants were 718 high school students (357 rural and 361 urban), in a total of 25 classrooms. The implementation of the simulations was explored using criteria associated with fidelity of implementation (FOI). Each context provided insights into the role of FOI in affecting the effectiveness of the interventions when working with groups of teachers. Results supported the effectiveness of this sequence of simulations as a teaching tool in a classroom context, and confirmed the importance of FOI factors such as adherence and exposure in determining the specific environments in which these materials were most effective. © 2012 Wiley Periodicals, Inc. J Res Sci Teach 49: 394–419, 2012     

Nephroprotective effects of Zingiber zerumbet Smith ethyl acetate extract against paracetamol-induced nephrotoxicity and oxidative stress in rats

Paracetamol (PCM) overdose can cause nephrotoxicity with oxidative stress as one of the possible mechanisms mediating the event. In this study, the effects of ethyl acetate extract of Zingiber zerumbet rhizome [200 mg per kg of body weight (mg/kg) and 400 mg/kg] on PCM-induced nephrotoxicity were examined. Rats were divided into five groups containing 10 rats each. The control group received distilled water while other groups were treated with extract alone (400 mg/kg), PCM alone (750 mg/kg), 750 mg/kg PCM+200 mg/kg extract (PCM+ 200-extract), and 750 mg/kg PCM+400 mg/kg extract (PCM+400-extract), respectively, for seven consecutive days. The Z. zerumbet extract was given intraperitoneally concurrent with oral administration of PCM. Treatment with Z. zerumbet extract at doses of 200 and 400 mg/kg prevented the PCM-induced nephrotoxicity and oxidative impairments of the kidney, as evidenced by a significantly reduced (P<0.05) level of plasma creatinine, plasma and renal malondialdehyde (MDA), plasma protein carbonyl, and renal advanced oxidation protein product (AOPP). Furthermore, both doses were also able to induce a significant increment (P<0.05) of plasma and renal levels of glutathione (GSH) and plasma superoxide dismutase (SOD) activity. The nephroprotective effects of Z. zerumbet extract were confirmed by a reduced intensity of renal cellular damage, as evidenced by histological findings. Moreover, Z. zerumbet extract administered at 400 mg/kg was found to show greater protective effects than that at 200 mg/kg. In conclusion, ethyl acetate extract of Z. zerumbet rhizome has a protective role against PCM-induced nephrotoxicity and the process is probably mediated through its antioxidant properties.     

Adult students' perceptions of good teaching as a function of their conceptions of learning—part 1. influencing the development of self-determination

This study investigated the perceptions of good teaching of adult students. Fifty-three students enrolled in part-time courses in Hong Kong were interviewed about a range of issues concerned with teaching, tutoring and learning. The initial analysis showed that there was no universal view of what constituted good teaching, as approaches preferred by some students resembled those disliked by others. These apparent contradictions were resolved by the recognition that perceptions of teaching quality were framed by conceptions of learning, which were shown to be consistent with a continuum from a reproductive pole to a self-determining one. Each of the four quadrants of the framework represents a conception of learning receiving teaching consistent or inconsistent with it. The quadrant representing self-determining learners receiving consistent facilitative teaching is seen as the goal for adult education to strive for. Didactic teaching was consistent with reproductive conceptions of learning. Teachers faced with predominantly reproductive classes are urged to help in developing greater levels of self-determination by progressively exposing students to forms of teaching requiring active involvement in the learning process, in a supporting environment.     

Do Different Levels of Inquiry Lead to Different Learning Outcomes? A comparison between guided and structured inquiry

Although the effects of open inquiry vs. more didactic approaches have been studied extensively, the effects of different types of inquiry have not received as much attention. We examined the effects of guided vs. structured inquiry on secondary students' learning of science. Students from three schools in north-eastern Thailand participated (N?=?239, Grades 7 and 10). Two classes in each school were randomly assigned to either the guided or the structured-inquiry condition. Students had a total of 14–15 hours of instructions in each condition. The dependent measures were science content knowledge, science process skills, scientific attitudes, and self-perceived stress. In comparison to the structured-inquiry condition, students in the guided-inquiry condition showed greater improvement in both science content knowledge and science process skills. For scientific attitudes and stress, students in one school benefited from guided inquiry much more than they did from structured inquiry. Findings were explained in terms of differences in the degree to which students engaged effortfully with the teaching material.     

Microfluidic device for trapping and monitoring three dimensional multicell spheroids using electrical impedance spectroscopy

In this paper, we report the design, fabrication, and testing of a lab-on-a-chip based microfluidic device for application of trapping and measuring the dielectric properties of microtumors over time using electrical impedance spectroscopy (EIS). Microelectromechanical system (MEMS) techniques were used to embed opposing electrodes onto the top and bottom surfaces of a microfluidic channel fabricated using Pyrex substrate, chrome gold, SU-8, and polydimethylsiloxane. Differing concentrations of cell culture medium, differing sized polystyrene beads, and MCF-7 microtumor spheroids were used to validate the designs ability to detect background conductivity changes and dielectric particle diameter changes between electrodes. The observed changes in cell medium concentrations demonstrated a linear relation to extracted solution resistance (Rs), while polystyrene beads and multicell spheroids induced changes in magnitude consistent with diameter increase. This design permits optical correlation between electrical measurements and EIS spectra.