Assessment of Cognitive Load in Multimedia Learning with Dual-Task Methodology: Auditory Load and Modality Effects

Using cognitive load theory and cognitivetheory of multimedia learning as a framework,we conducted two within-subject experimentswith 10 participants each in order toinvestigate (1) if the audiovisual presentationof verbal and pictorial learning materialswould lead to a higher demand on phonologicalcognitive capacities than the visual-onlypresentation of the same material, and (2) ifadding seductive background music to anaudiovisual information presentation wouldincrease the phonological cognitive load. Weemployed the dual-task methodology in order toachieve a direct measurement of cognitive loadin the phonological system. In bothexperiments, the modality effect could beconfirmed in the patterns of secondary taskperformance and in the primary learning task.     

An exploration of student teachers’ perspectives at the start of a post-graduate master's programme on inclusive and special education

In this article we explore the perspectives of a group of teaching professionals starting a post-graduate master's programme on inclusive and special education. Set in the current context of growing interest over the preparation of teachers for inclusive education worldwide, this exploration is part of research that looks more broadly at the impact of the programme on students. In this paper we set the context of the study and present results focusing on students’ pre-understanding of the concepts ‘inclusive’ and ‘special education’, as well as their reasons for choosing the programme and expected learning outcomes. Quantitative and qualitative data were collected with a questionnaire administered to students at the beginning of the programme. Findings reveal that students saw the programme as a factor contributing to their ability to implement inclusive education in practice. However, it emerged that they had somewhat different understandings of what ‘inclusive education’ actually means. Implications for providers of inclusive education programmes for teachers are discussed.     

HPE teachers’ negotiation of environmental health spaces: discursive positions,embodiment and materialism

A National Curriculum in Health and Physical Education (HPE) has recently been developed in Australia. This new curriculum reflects, among other educational priorities, both environmental sensitivities and a commitment to the enhancement of young people’s health and wellbeing. HPE is one of the key sites in the curriculum where a focused consideration of the relationship between the environment and health is possible. However, to date no research has considered the ways that HPE teachers might recognise and negotiate these spaces. The research described in this paper addresses this gap through an analysis of semi-structured interviews with generalist primary and specialist secondary HPE teachers, drawing on a ‘narrative ethnography’ approach derived from cultural geography. This analysis highlights the consequences of the absence of a knowledge tradition that explicitly links the fields of the environment and health in HPE. Participants who were able to conceptualise environmental health almost exclusively drew on dominant neoliberal and risk discourses. At the same time, teachers’ embodied histories and affective encounters with non-human nature helped them to rupture or challenge dominant assumptions about environmental health. We argue that corporeal knowledge developed through embodied experiences has the potential to assist teachers in formulating environmental health in ways that highlight how interactions with the environment might enhance health and wellbeing.     

Declining trends in student performance in lower secondary education

Student performance is related to motivation to learn. As motivation generally declines during lower secondary education, one might expect performance to decline as well during this period. Though, until now, it has been unclear whether this pattern exists. In the present study, we examined student performance during the early years of secondary education from a developmental perspective. Participants were 1544 Dutch secondary school students across three grades (grades 7 to 9). To investigate student performance trends, we analysed report card grades by using hierarchical linear modelling with two levels (level 1, time point; level 2, student). Potential moderators to be examined were (1) gender, (2) school type and (3) initial level. A linear decline in report card grades from grade 7 to 9 was found for boys and girls, in all school types, and regardless of initial level. Two variables moderated the steepness of the decline: school type and initial level. Gender and school type had a main effect on performance level. The same pattern was observed for the subset of ‘core subjects’—Dutch, English and mathematics. Motivational and cognitive factors that may explain the performance decline are discussed.     

The formal setting as context for cognitive activities. An empirical study of arithmetic operations under conflicting premisses for communication

The general concern of the present article is to contribute to an understanding of the contextual determination of cognitive activities. More specifically, the focus of the empirical research reported has been to study how pupils define and deal with cognitive tasks in situations that are recognised as pedagogical in character. Within the context of their everyday mathematics teaching, 206 twelve year old primary school pupils were given work sheets containing elementary arithmetic problems. The experimental treatment consisted of introducing (through headings and instructions) pedagogical definitions of problems that were in conflict with the nature of the problems themselves. The results indicate that the predefinitions of cognitive activities typical of educational contexts have a strong impact on the way problems are dealt with. Clear differences could be discerned between groups at different achievement levels in the extent to which the cues present in pedagogical contexts were used in defining the problem. A crucial aspect of what are conventionally conceived as differences in mathematical ability seems, judging from the present results, to have more to do with the capacity to decipher ambiguous communicative situations than with the mastery of a mathematical algorithm per se.     

Exploring the Development of Student Teachers’ PCK of the Multiple Meanings of Chemistry Topics

In chemical education, many secondary school students experience difficulties in understanding three mutual related meanings of topics, that is, the macroscopic meaning, the microscopic meaning, and the symbolic meaning. As a consequence, student teachers should be prepared carefully to learn how to teach this difficult issue. This article presents a naturalistic case study of the development of eight student teachers pedagogical content knowledge (PCK) of the multiple meanings of chemistry topics. The student teachers (all M.Sc.) participated in a teacher education program of which the initial phase focused on learning from teaching instead of learning of teaching. They were asked individually to choose and teach a chemistry curriculum topic with a focus on the macro-micro-symbolic issue. Research data were obtained by interviewing the student teachers individually before and after the lessons. The outcomes indicated a development of student teachers knowledge of teaching difficulties, for instance, too fast and mainly implicit reasoning between macro- and micro-meaning, and a dominant orientation towards the micro-meaning of topics. A development of knowledge of students difficulties was also indicated, for instance, difficulties in understanding the macro- and micro-meaning of reaction equations. Implications for the follow-up phases of the program are presented.     

Academic Freedom,Innovation, and Responsibility: Towards an ‘Ethical GPS’ in Higher Education and Science

In lieu of the usual ‘From the Editors’ piece, Jan Sadlak, Director of UNESCO‐CEPES, and Henryk Ratajczak, Vice‐President of the European Academy of Arts, Sciences and Humanities (EAASH), describe below the scope and highlights of the International Conference on Ethical and Moral Dimensions for Higher Education and Science in Europe, held in Bucharest on 2–5 September 2004. The articles in this issue, some of which are drawn from Conference presentations, are also introduced here.

The Conference was organized by the above two organizations, in collaboration with the United Nations University (UNU) in Tokyo and the Division of Basic and Engineering Sciences of UNESCO in Paris. It took place under the joint high patronage of Mr. Jacques Chirac, President of the French Republic, and Mr. Ion Iliescu, President of Romania, and received further distinction in the form of special messages from Pope John Paul II, HRH Prince El Hassan bin Talal, and Mr. Koïchiro Matsuura, Director‐General of UNESCO. All Conference documents can be accessed on the UNESCO‐CEPES website, ?www.cepes.ro?.     

Phytochemical composition,biological potential and enzyme inhibition activity of <Emphasis Type="Italic">Scandix pecten-veneris</Emphasis> L.

Objective

Scandix pecten-veneris L. is a less studied wild edible herb and is considered an extinct plant species in many parts of the world. This study was designed to evaluate its phytochemical composition and biological potential of S. pecten-veneris L.

Methods

Phytochemicals including alkaloids, flavonoids, polyphenols, and tannins were determined in extracts of S. pecten-veneris. Antioxidant activity was determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH), while reducing power was tested by ferric reducing/antioxidant power (FRAP) assay. Antimicrobial activity against seven bacterial and four fungal strains was evaluated using agar well diffusion assay. Enzymes inhibition study was performed for urease, phosphodiesterase-I, and catalase-II.

Results

S. pecten-veneris showed moderate antiradical activity and reducing potential of hydroxyl radicals to about 20% of the initial value. The antioxidant activity of various extracts of S. pecten-veneris showed a linear correlation with total phenolic contents in the order of water>n-butanol>chloroform>ethyl acetate>methanol extracts. S. pecten-veneris leaves showed the highest inhibitory activity against Staphylococcus aureus while the highest antifungal activity was observed against Candida albicans. The plant extract was most potent against urease enzymes but showed moderate activity against phosphodiestrase-I and carbonic anhydrase-II.

Conclusions

Our data demonstrate that in addition to its culinary uses, S. pecten-veneris has good medicinal potential and hence could be used for treating some specific health ailments.

     

The things (we think) we (ought to) do: Ideological processes and practices in teaching

Ideologies of education and of teaching are complex and layered, and they contain macro-social, institutional as well as micro-ideological levels. Building on cases from the UK and South Africa, this paper argues that notions of ‘professionalism’ among teachers display such ideological layering, and that such notions are heavily invested with interests that transcend the operational or institutional scales. In the case of the UK, we discuss the way in which a teacher described her experience of taking a degree course, exposing a rift between individual, experiential knowledge and institutional, organisational knowledge, characteristic of the large-scale transformations of the educational field in the UK. In the South African case, we show how a white teacher instructing black township children deploys images of the disciplined body that derive from the Apartheid ‘old order’. In both cases we see that views of professionalism are infused with micro-ideological, practical beliefs as well as with macro-ideological social and political views. In terms of the implications of our line of argument for teacher education we conclude that student teachers should be taught explicitly about the discourses by which teaching is constructed so that they are able to reflect more critically on their professional practice.     

Teacher education pedagogy: disrupting the apprenticeship of observation

Teacher educators are challenged to enact a pedagogy that helps facilitate conceptual transitions in preservice teachers away from the naïve notions formed during their long apprenticeships of observation. This study examines one ‘educative experience purposefully embedded in meaningful pedagogical experiences’ using the three-level model of teacher learning. Findings indicate preservice teachers derived a range of learning from the educative experience, and most were found to be surfacing, confronting, and beginning to replace naïve notions of teaching, learning, and assessment. Findings also suggest several characteristics of teacher education pedagogy that disrupt the apprenticeship of observation, including the presentation of dramatically new ideas to elicit the awareness of unexamined assumptions about teaching and learning; the usefulness of affect in awakening that awareness; and opportunities to develop metacognition and process reactions through writing that surfaces prior ideas and articulates new understandings.