A Conceptual Model (The Six Mirrors of the Classroom) and It’s Application to Teaching and Learning About Microorganisms

In this paper a conceptual model of instruction “the six mirrors of the classroom” used as a frame for teaching a learning topic, the microorganisms are depicted. The paper consists of four sections: (a) the six mirrors of the classroom model (SMC); (b) the SMC as implemented in the expository and cooperative modes of instruction in classrooms and results; (c) a “Journey of Inquiry into the Wonderful World of Microorganisms” (JIWWM), developed according to the Science–Technology–Environment–Peace–Society (STEPS) approach; and (d) teaching and learning the JIWWM, in ninth-grade classes, within the SMC model. The results show that science topic can be taught in the frame of the mirrors of the classroom. When the instructional goals of the teachers used the mirror “1, classroom organization” and mirror “6, pupils’ social behavior” and the third ring around the all six mirrors cooperative skills were practiced, academic outcomes were achieved, and attitudes toward environmental preservation and peace improved. The SMC model can serve as a valuable tool for teachers, since it can design their teaching and learning settings in a more controlled environment, in terms of objectives, teachers’ and students’ social behaviors, and academic outcomes.     

The author as agent of information policy: The relationship between economic and moral rights in copyright

A historical and theoretical analysis of the copyright environment demonstrates that both the economic rights associated with copyright and the moral rights often associated with copyright perform social functions. The latter have not been as universally embraced or adopted as the former. The lack of enthusiasm for moral rights is argued to be because the social utility of this aspect of the copyright regime has gone largely unrecognized. In fact, moral rights ensure that the information needs of the public are being met because they enhance the ability to assess the authority and reliability of information. While historically this has not been as important as enhancing the supply of information, a function performed by the economic rights of copyright, in the context of the new information environment, the role played by moral rights is becoming increasingly important. Our thesis also defines the appropriate scope of moral rights protection in copyright.     

From External Regulation to Self-Regulation: Early Parenting Precursors of Young Children's Executive Functioning

In keeping with proposals emphasizing the role of early experience in infant brain development, this study investigated the prospective links between quality of parent–infant interactions and subsequent child executive functioning (EF), including working memory, impulse control, and set shifting. Maternal sensitivity, mind-mindedness and autonomy support were assessed when children were 12 to 15 months old ( N  =   80). Child EF was assessed at 18 and 26 months. All three parenting dimensions were found to relate to child EF. Autonomy support was the strongest predictor of EF at each age, independent of general cognitive ability and maternal education. These findings add to previous results on child stress-response systems in suggesting that parent–child relationships may play an important role in children's developing self-regulatory capacities.     

How do teachers reason about their practice? Representing the epistemic nature of teachers’ practical knowledge

The present study focused on the epistemology of teachers’ practical knowledge by addressing the following research question: how do teachers attempt to reason about their practices and their practical knowledge? The results indicated that teachers supported their practical knowledge claims using the “practical argument”. Within this conceptual framework, they relied on contextual grounds that call for the fact that something should or should not be “done”, rather than something is “true” or “false”. Contextual grounds, then, were found to be backed up by two significant types of warrants: moral ethos, and “what works” notion. Depending on what kind warrants they used, teachers’ practical knowledge was interpreted to be based on two different epistemic statuses: “practicable” knowledge and “praxial” knowledge.     

Three-dimensional anthropometric analysis: Differences between elite Australian rowers and the general population

Abstract

The aim of this study was to quantify the anthropometric differences between elite senior Australian rowers and the Australian adult population using three-dimensional (3D) whole-body scanning. The dimensions of senior rowers competing at the 2007–2008 Australian Rowing Championships were compared with those of an age-matched sample of Australian adults. Mass, height, and sitting height were measured before the participants underwent a 3D whole-body scan, with lengths, breadths, girths, cross-sectional and surface areas, and volumes extracted from each scan. Differences in means and variability between the two groups were expressed as standardized effect sizes and ratios of coefficients of variation. Heavyweight rowers were generally much larger than the general population in absolute size, with 3D dimensions and height and mass showing the largest effects. In contrast, lightweight rowers were generally similar or smaller in absolute and proportional size. The dimensions of rowers, especially the lightweights, were also generally less variable than those of the general population. The greatest differences between elite rowers and the general population were seen in dimensions that could not be captured without 3D scanning, such as segmental volumes and cross-sectional areas.     

Barriers to electronic mail systems in developing countries

Abstract

Proponents of electronic mail systems (EMS) claim that they increase the productivity and efficiency of operations. Their use has mushroomed in the last five years in industrialized nations. The use of such systems in less developed countries is, however, practically nonexistent. This paper examines the barriers to their use in those countries. These barriers are divided into four categories: technical, economic, political, and social. Some strategies for dealing with those barriers are also presented.     

Between a Rock and a Hard Place: Shia Ismaili Muslim Girls Negotiate Islam in the Classroom

ABSTRACT

This case study investigates the experiences of Shia Ismaili Muslim girls as they encounter themselves as subjects of social studies curriculums on Islam. A postcolonial lens is used to examine differently empowered subjectivities and curricular epistimes within the high school world history context. In an effort to understand their experiences, this study focuses on how the students position themselves in relation to the curriculum, and ultimately asks, to what extent do students from minority communities of interpretation appropriate or resist the authoritative narrative of Islam offered in their classrooms, particularly around the question, “Who is a Muslim?” The central finding revealed a paradox of representation and participation for these students, who found their practice and interpretation of Islam silenced in the classroom curriculum, and yet felt obliged to defend Islam and educate others against stereotypes of Muslims. The implications of this study compel educators to explore decolonial approaches to teaching about the religious other.     

Evaluating metacognitive scaffolding in Guided Invention Activities

Invention and Productive Failure activities ask students to generate methods that capture the important properties of some given data (e.g., uncertainty) before being taught the expert solution. Invention and Productive Failure activities are a class of scientific inquiry activities in that students create, implement, and evaluate mathematical models based on data. Yet, lacking sufficient inquiry skills, students often do not actualize the full potential of these activities. We identified key invention strategies in which students often fail to engage: exploratory analysis, peer interaction, self-explanation, and evaluation. A classroom study with 134 students evaluated the effect of supporting these skills on the quality and outcomes of the invention process. Students in the Unguided Invention condition received conventional Invention Activities; students in the Guided Invention condition received complementary metacognitive scaffolding. Students were asked to invent methods for calculating uncertainties in best-fitting lines. Guided Invention students invented methods that included more conceptual features and ranked the given datasets more accurately, although the quality of their mathematical expressions was not improved. At the process level, Guided Invention students revised their methods more frequently and had more and better instances of unprompted self-explanations even on components of the activity that were not supported by the metacognitive scaffolding. Classroom observations are used to demonstrate the effect of the scaffolding on students’ learning behaviours. These results suggest that process guidance in the form of metacognitive scaffolding augments the inherent benefits of Invention Activities and can lead to gains at both domain and inquiry levels.     

Bias Corrections for Standardized Effect Size Estimates Used With Single-Subject Experimental Designs

A multilevel meta-analysis can combine the results of several single-subject experimental design studies. However, the estimated effects are biased if the effect sizes are standardized and the number of measurement occasions is small. In this study, the authors investigated 4 approaches to correct for this bias. First, the standardized effect sizes are adjusted using Hedges’ small sample bias correction. Next, the within-subject standard deviation is estimated by a 2-level model per study or by using a regression model with the subjects identified using dummy predictor variables. The effect sizes are corrected using an iterative raw data parametric bootstrap procedure. The results indicate that the first and last approach succeed in reducing the bias of the fixed effects estimates. Given the difference in complexity, we recommend the first approach.