Fabrication de problèmes de fraction par des eleves a la fin de l'enseignement elementaire

Résumé Une expérience d'enseignement a été menée avec des élèves de Cours Moyen (Grade 4 et 5). Les élèves ont participé à une activité spécifiquement élaborée, la production de problèmes de fractions, à l'aide d'une terminologie spécifique, grâce à la production et à l'observation d'un ensemble de critères. Ainsi, les interactions au sein de la classe ont été organisées dans le but d'élaborer un système commun de significations, basé sur des outils sémiotiques appropriés, qui ont permis au maître et aux élèves de partager des significations mathématiques. De telles interactions nécessitent une négociation de nouvelles normes sociales qui détermine, pour le maître et les élèves, un nouveau contrat didactique.

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A longitudinal teaching experiment was conducted with fourth and fifth graders. Students participated in a specially designed activity, the production of fraction problems using a specific terminology developed through producing and applying a set of criteria. The interactions within the class were organised with the goal of developing a common system of meanings, based on appropriate semiotic tools, allowing teacher and students to share mathematical significations. Such interactions require a negotiation of new social norms determining, for teacher and students, a new didactic contract.

     

Automated Scoring of Constructed‐Response Science Items: Prospects and Obstacles

Content‐based automated scoring has been applied in a variety of science domains. However, many prior applications involved simplified scoring rubrics without considering rubrics representing multiple levels of understanding. This study tested a concept‐based scoring tool for content‐based scoring, c‐rater?, for four science items with rubrics aiming to differentiate among multiple levels of understanding. The items showed moderate to good agreement with human scores. The findings suggest that automated scoring has the potential to score constructed‐response items with complex scoring rubrics, but in its current design cannot replace human raters. This article discusses sources of disagreement and factors that could potentially improve the accuracy of concept‐based automated scoring.     

What traits do academics value in student writing? Insights from a psychometric approach

The number of students studying for university qualifications through the medium of English and for whom English is not their first language has increased significantly in recent years. This, along with efforts to widen access to those under-represented in higher education, has brought into focus the question of what academics see as constituting a ‘good’ piece of student writing. In this small-scale pilot study, Thurstone’s method of paired comparisons was used to establish a scale for ranking six essays in terms of how favourably each was viewed by academic lecturers when compared with every other essay in the set. Kelly’s repertory grid technique was subsequently applied to interviews conducted with the same lecturers to establish which traits they associated with the upper and lower end of the scale. Findings suggest that this methodology represents a promising approach to establishing what academic tutors regard as the key elements of good writing and thus provides an indication of what English teachers might fruitfully focus on in their teaching of the skill.     

Physical demands of elite basketball during an official U18 international tournament

ABSTRACT

The aims of this study were (a) to compare players’ physical demands between different playing positions in elite U18 basketball games and (b) to identify different clusters of performance. Data were collected from 94 male subjects (age: 17.4 ± 0.7 years), competing in a Euroleague Basketball Tournament. Guards covered a greater relative distance than centres and forwards (small to moderate effect). Forwards and guards had more peak accelerations, high accelerations and high decelerations than centres (moderate to large effects). A cluster analysis allowed to classify all cases into three different groups (Lower, Medium and Higher activity demands), containing 37.4%, 52.8% and 9.8% of the cases, respectively. The high accelerations, high decelerations, peak accelerations and total distance covered were the variables that most contributed to classify the players into the new groups. The percentage of cases distributed in the clusters according to playing position, game type (worst vs worst, mixed opposition, best vs best) and team were different. Centres have lower physical demands specially related with the number of accelerations and decelerations at high intensity and the peak acceleration when compared with guards. Each team has a different activity profile, that does not seem to influence the tournament outcome.     

Reorienting the Mobile: Australasian Imaginaries

In this paper, I approach the question of mobiles in Asian countries by considering the case of Australia. I do so by way of a preliminary inquiry that seeks to explore the intersection between the emergence of mobiles in Australia with transformations in that country's sense of its relationship with Asia. First I discuss the history of the mobile phone in Australia, noting some important uses and representations that formed part of its social shaping. Second, I explore mobiles and the paradoxes of multiculturalism, and also how digital technologies became central to political culture and identity debates in Australia in the early to-mid 1990s. Third, I look at some important moments in the social shaping of text messaging, in which questions of cultural difference were decisive. Finally, I offer concluding remarks about future research on mobiles in Australia and how they are tied into Asian identities.     

Primary School Teacher Training in the European Community: an overview of recent developments

The colleges of education for primary school teachers in The Netherlands have gone through several mergers in the space of just a few years. Many colleges of education became part of a polytechnic. The authors studied how the specific characteristics of the education of primary school teachers can show to full advantage in a large institute of higher vocational education. In the Dutch situation as well as that of the other countries of the European Community (England and the Federal Republic of Germany in particular) the phenomena ‘integration’ and ‘differentiation’ have been studied. The authors concluded that mergers of primary school teacher training colleges can be a serious threat to the educational identity of teacher training as a whole. Holding to as well as giving up the educational identity does not guarantee that the specific characteristics will be kept.     

Learning Styles Among Mature‐Age Students: Some Comments on the Approaches to Studying Inventory (ASI‐S)

The short form of Entwistle's (1981) Approaches to Studying Inventory (ASI‐S) was administered to 503 mature‐aged students, most of whom identified themselves as disadvantaged and were returning to study after many years absence. Analysis of the 503 responses showed that internal consistency estimates for the seven subscales of the ASI‐S were generally low, but that confirmatory factor analysis could recover two major dimensions corresponding to deep and surface orientations to learning. To examine the predictive validity of the ASI‐S with this population, results for a mathematics unit which they were studying were regressed on factor scores. Results of the structural analysis indicated that the deep orientation was unrelated to academic progression in mathematics but that high scores on the surface orientation were associated with poor academic performance ( = 0.092). These findings indicate that broad learning orientations are fundamental and can be identified in a group of students returning to study after a long absence. The study also emphasises the importance of examining the particular study context when evaluating the effect of learning orientations. The effect of deep and surface orientations may be positive or negative depending on the subject area and the learning context.