Consolidation of Black-dyed Māori Textile Artefacts: Evaluating the Efficacy of Sodium Alginate

Black-dyed artefacts are found in museums worldwide, many produced using an iron-tannate compound. Deterioration of iron-tannate dyed artefacts is an international preservation issue: in New Zealand the deterioration of paru (iron-tannate) dyed Māori textiles is widespread. This article reports experimental work testing the efficacy of sodium alginate, a consolidant developed for deteriorated paru-dyed muka (fibre from harakeke; Phormium tenax). The colour stability, strength retention, and acidity of paru-dyed muka consolidated with sodium alginate (0.25, 0.5, and 1% w/v in water) was tested pre- and post-artificial light ageing. This study found that sodium alginate had no negative effect on paru-dyed muka and in some cases provided benefit. Interestingly, the colour of paru-dyed muka is substantially more stable in UV-filtered light than previously recognised. Also microfading results were in agreement with visual assessments of colour change at 1 Mlux hour exposure, providing confidence in this relatively new technique to assess colour change.     

Scientific concept development in Solomon Island students: a comparative analysis

Abstract

This paper summarises the results of an investigation of Solomon Islands secondary school students’ interpretations of three concepts: vision, animals and burning. Internal comparisons among the three areas and external comparisons with findings reported from other societies are made. While some support is given to the idea that children from different cultures may develop similar conceptions, this support is qualified and is shown to be dependent on the type of phenomenon investigated. The degree to which there is immediate personal experience of phenomena may be important, as may the presence or absence of culturally supported explanations. The commonly reported resistance of children's conceptions to school science teaching is also shown not to be universally true. The article ends with a plea for caution in the cross‐cultural extrapolation of research into children's conceptions.     

Classroom environments that foster a disposition for critical thinking

In this article, we examine the disposition for critical thinking (CT) from three perspectives and analyse the underlying constructs of the disposition for CT, such as one’s ability, sensitivity and inclination to engage in critical, mindful thought. Environmental factors that enhance or inhibit the development of a generalisable disposition for critical thought are discussed. Finally, we present a set of empirically-verified classroom practices that can help to foster a disposition for CT.     

Adult outcomes of sustained high-quality early child care and education: Do they vary by family income?

Experimental research demonstrates sustained high-quality early care and education (ECE) can mitigate the consequences of poverty into adulthood. However, the long-term effects of community-based ECE are less known. Using the 1991 NICHD Study of Early Child Care and Youth Development (n = 994; 49.7% female; 73.6% White, 10.6% African American, 5.6% Latino, 10.2% Other), results show that ECE was associated with reduced disparities between low- and higher-income children's educational attainment and wages at age 26. Disparities in college graduation were reduced the more months that low-income children spent in ECE (d = .19). For wages, disparities were reduced when children from low-income families attended sustained high-quality ECE (d = .19). Findings suggest that community-based ECE is linked to meaningful educational and life outcomes, and sustained high-quality ECE is particularly important for children from lower-income backgrounds.     

An eye tracking comparison of external pointing cues and internal continuous cues in learning with complex animations

Two experiments used eye tracking to investigate a novel cueing approach for directing learner attention to low salience, high relevance aspects of a complex animation. In the first experiment, comprehension of a piano mechanism animation containing spreading-colour cues was compared with comprehension obtained with arrow cues or no cues. Eye tracking data revealed differences in learner attention patterns between the different experimental conditions. The second experiment used eye tracking with synchronized and non-synchronized cues to investigate the role of dynamic direction of attention in cueing effectiveness. Results of Experiment 1 showed that spreading-colour cues resulted in better targeting of attention to thematically relevant aspects and in higher comprehension scores than arrow cues or no cues. For Experiment 2, superior comprehension after the synchronized version together with eye tracking data indicated that cue effectiveness depended on attention direction being spatially and temporally coordinated with onsets of animation events having high thematic relevance to the learning task. The findings suggest the importance of perceptual cues and bottom-up processing.     

Walanbaa warramildanha: The impact of authentic Aboriginal community and school engagement on teachers’ professional knowledge

The conundrum of Indigenous education in Australia is that there are multiple, highly contested and polarising narratives that vie to inform both public and policy debate about how to construct effective schooling of Aboriginal students. Two of these contested discourses, which are seen to drive much of this debate, highlight the complexity of concerns—one which is essentially aspirational in its intent but unperceptive to the realities of Aboriginal student achievement and a second data focused discourse that is managerial and evaluative in its focus to disclose policy and pedagogic failures on student outcomes. The first has posed the politically more palatable proposition that there has been a slow, sometimes faltering but inexorable improvement in Aboriginal education, while the second highlights a mounting body of qualitative data that document an overall failure by school systems to lift Aboriginal student education achievement. The author recognises the complex and historical nature of the multilayered ‘issues’ that sit at the heart of Aboriginal underachievement. He argues that one of those underpinning issues that has plagued Aboriginal education centres on the depth of the socio-cultural disconnect between Aboriginal students and their communities, and teachers. He also argues that, too often, teachers are appointed to schools with limited social, political and professional knowledge about the particular needs and aspirations of Aboriginal students such that it impacts on their capacity to establish authentic connections to students. The research on which this article is based sets out to provide an understanding of both the nature and dynamics of community and school engagement in sites with high proportions of Aboriginal students. The study aimed to investigate teachers’ capacity to develop authentic pedagogic practices that are responsive to the educational, cultural and aspirational needs of Aboriginal students. In particular, the research highlights how the relational dynamics between schools and Aboriginal people have been deeply affected by colonial histories of exclusion and systemic disadvantage, pervasive school discourses of marginalisation and in particular an ignorance about holistic needs of Aboriginal students at school and the resultant negative relational interactions between schools and Aboriginal families. This multisite ethnographic study was undertaken with Aboriginal community members, teachers and school principals in 2012 as doctoral research. It was conducted within a relational landscape characterised by an enduring socio-cultural dissonance between schools and their Aboriginal communities. The study focused on examples of authentic collaboration and purposeful interactions between Aboriginal communities and schools that were shown to support teachers in building deeper understanding that enhanced their cognisance of the wider needs of Aboriginal students. The findings in this article highlight that when authentic engagement between Aboriginal people and schools occurred, it appeared to positively impact the teachers’ professional knowledge and created a consequent interest within these communities to engage with their schools. The research further identified that in each site the Aboriginal participants articulated an interest in developing authentic school collaborations that would enhance student outcomes. These findings suggested that teachers need to honour, understand and actively reflect on community history, contexts and aspirations to develop the skills and knowledge to address the particular socio-cultural and educational needs of Aboriginal students.     

The context of their lives

Abstract

This paper explores the Ecology of Human Development Model (Bronfenbrenner, 1979) as applied to the lives of students enrolled in the Early Childhood Education program at James Madison University (Virginia). This model provided insights into who our students are, their experiences, beliefs and values and how they define themselves; secondly, the process of reflection provided an opportunity for students to examine their lives as part of a larger social context; and thirdly, by valuing the process, it is hoped that students would recognize the importance of coming to know the children they teach. It is imperative that students are well prepared for teaching an increasingly diverse population (NCATE Standard I.E.2). Our belief is that in order for prospective teachers to appreciate diversity in classrooms, they need first to examine the context of their own lives. © 2001 Elsevier Science Inc. All rights reserved.