Should we abolish the schooling of children?

In this same sectionProspects published in its previous issue (Autumn 1972) an extract of a working document presented at a conference held in Bellagio last May on education and development under the sponsorship of the Ford and Rockefeller Foundations.It is obvious that the article in question does not reflect, either in its spirit or its contents, the position of Unesco.Our purpose in publishing it was to stimulate a dialogue about such problems among our readers.The following constitutes a contribution to this dialogue, which we hope will be established in this section among educators and other people interested in educational problems.     

Une expérience d'enseignement de mathématique avec des enfants de 11 à 13 ans

Sans résumé     

Measuring learning: discrepancies between conceptions of and approaches to learning

This study is framed under the student approaches to learning tradition. The aim was to identify convergence in quantitative and qualitative responses of individuals when measuring their conceptions of and approaches to learning with a mixed methods design. A sample of 1110 Spanish Master’s level teacher education students completed a scale on approaches to learning (R-SPQ-2F), and a randomly selected subsample of 111 answered an open-ended question on how they learned. Overall, the qualitative and quantitative data did not support each other, as inventory responses showed a clear predominance of a deep, non-surface approach to learning, whereas qualitative answers reflected a tendency towards lower-order conceptions of learning. Inconsistencies in the results suggest future research ought to use a combination of techniques when exploring constructs such as learning should they wish to draw valid conclusions.     

The Role of Heads of Department in the Professional Development of Educators: A Distributed Leadership Perspective

The qualitative study reported on was, undertaken from a distributed leadership perspective, and was an attempt to provide understanding of how heads of department (HoDs) develop educators within the organisational context of different schools and subject departments. The findings are related to the current policy framework for professional development in South African schools. Two fee-paying and two non-fee-paying schools were selected and interviews were conducted with HoDs from single subject (unitary) and multi-subject (federal or confederate) departments in each school. The data was transcribed, coded, analysed and related to the research question. The findings confirmed that HoDs are a key link between principals and the educators in their classrooms. This supports the view that HoDs have formal responsibilities and accountabilities and they wield a horizontal and a vertical influence. Recommendations are made to improve professional development practice by HoDs in particular and in the education system in general.     

Widely linear estimation for multisensor quaternion systems with mixed uncertainties in the observations

The optimal widely linear state estimation problem for quaternion systems with multiple sensors and mixed uncertainties in the observations is solved in a unified framework. For that, we devise a unified model to describe the mixed uncertainties of sensor delays, packet dropouts and uncertain observations by using three Bernoulli distributed quaternion random processes. The proposed model is valid for linear discrete-time quaternion stochastic systems measured by multiple sensors and it allows us to provide filtering, prediction and smoothing algorithms for estimating the quaternion state through a widely linear processing. Simulation results are employed to show the superior performance of such algorithms in comparison to standard widely linear methods when mixed uncertainties are present in the observations.     

Assessing a Remedial Intervention Programme in Developing the Planning Skills of Grade 4 and 5 Learners

The search for assessment procedures that are more fair and useful have led to the investigation of alternatives to traditional forms of intellectual assessment. This study explored an alternative which combined a dynamic assessment approach with the Planning, Attention, Simultaneous and Successive Processing (PASS) model of cognitive processing. The aim was to investigate the effectiveness of a planning intervention programme based on Feuerstein’s criteria for Mediated Learning Experience (MLE) with a group of Grade 4 and 5 remedial school learners who presented with a range of barriers to learning. Twenty six learners were assigned to the experimental group and 25 to the control group. The results showed that there was a significant improvement in the experimental group’s Planning Scale score on the Cognitive Assessment System, following the intervention. These results imply that children often have far greater potential than is realised and that intentional mediation can help to enhance cognitive functioning and assist in further developing children’s learning potential.     

Using a digital game as an advance organizer

The use of digital games as an instructional tool has garnered increasing attention in the education community. Empirical work supported by theory on the learning affordances of digital games allowed the game-based learning community to arrive at the consensus that digital games provide an excellent medium for the acquisition of skills and the exploration of concepts. The field, however, lacks research on how best to teach with games. For example, an unanswered question is whether gameplay should take place before instruction, after instruction, or integrated throughout in order to maximize the effectiveness of the game. To answer this question, a study was conducted with 103 middle school students who either played a digital game designed to teach algebraic concepts before receiving formal instruction, received formal instruction before playing the game, or received formal instruction intermittently during their gameplay session. The results indicate while on average all participants showed improvement in terms of learning, those who played the game before receiving instruction showed significant improvement. These results provide evidence supporting the theory that games are effective when used as an advanced organization tool.     

Activity of periscapular muscles and its correlation with external oblique during push-up: Does scapular dyskinesis change the electromyographic response?

Scapular dyskinesis is the term used to describe changes in the positioning or movement of the scapula. Such dysfunction is associated with changes in the activation of the scapular muscles. However, the influence of the axial muscles on the scapular muscles activity of subjects with scapular dyskinesis is unknown. This study aimed to compare the electromyography (EMG) activity of periscapular muscles and its correlation with the external oblique muscle during the execution of push-up performed in different surfaces, in volunteers with and without scapular dyskinesis. Thirty-six men, divided in two groups (control and dyskinesis), performed push-up on stable and unstable surface. The EMG activity of serratus anterior (SA_5th and SA_7th fibers), upper (UT) and lower (LT) trapezius, external oblique (EO) was recorded during execution of each task condition. Statistical analyzes were performed using two way ANOVA repeated measures and Pearson correlation. It was observed effect of interaction between factors, being evidenced increased activity of UT, SA_7th and OE for the control group and decreased activity of SA_5th, SA_7th and EO for dyskinesis group during execution of push-up on unstable surface. In both groups positive correlations (r > 0.47) were observed between EMG activity of SA and EO. In the exercises tested, there seems to be an anatomical and functional relationship between the SA and EO muscles. The use of the unstable surface promotes increased neuromuscular demand, but the neuromuscular strategies appear to differ between groups.