Posibilidades didácticas del sonido y radio escolar: Implicaciones curriculares

La radio es uno de los medios tecnológicos más accesibles sin grandes recursos al medio escolar, a la vez que brinda un repertorio didáctico enormemente rico y flexible. En este artículo se pasa revista a un buen abanico de estas posibilidades.     

The conceptual evolution of actual mathematical infinity

The different stages in the conceptual evolution of actual infinity are analyzed. We show how this concept occurs in high-school students at a prior, or at best, at the same level, as in Bernard Bolzano's conceptualization (as defined in his work The Paradoxes of Infinity). Furthermore, in terms of the historical development of the concept, the students' conceptualization has intra-objectal stage characteristics. Within the same framework, we show how Cantor's work fits into the inter-objectal stage, as well as presenting the difficulties encountered by students in order to reach this stage, given the current curricular structure. We conclude that such evidence should bring about a reconsideration of Piagetian ideas in education.     

Investigating the double-deficit hypothesis of developmental dyslexia in an orthography of intermediate depth

The present study aimed to investigate the double-deficit hypothesis (DDH) in an orthography of intermediate depth. Eighty-five European Portuguese-speaking children with developmental dyslexia, aged 7 to 12, were tested on measures of phonological awareness (PA), naming speed (NS), reading, and spelling. The results indicated that PA and NS were not significantly correlated, and that NS predicts reading fluency (but not reading accuracy and spelling) beyond what is accounted for by PA. Although the majority of the children with developmental dyslexia have double deficit (62.4%), some children have a single phonological deficit (24.7%) or a single NS deficit (8.2%). Children with a double deficit were not more impaired in reading fluency, reading accuracy, and spelling than both single-deficit subtypes. In conclusion, the findings of the present study are partially consistent with the DDH and provide evidence for the multifactorial model of developmental dyslexia. Implications of the DDH for an orthography of intermediate depth are emphasized.

     

Lo individual y lo social en la construcción del conocimiento

Resumen

En este trabajo se explican los principales principios y teóricos y metodologicos de una línea de investigación que tiene como objetivo el estudio del papel del contexto en la adquisición de ciertos contenidos específicos.

Para ilustrar dicha opción se presentan dos tipos de trabajos. En primer lugar se describe la trayectoria seguida en los trabajos sobre adquisición del lenguaje matemático que hemos venido realizando en los últimos años. En segundo lugar se presentan algunos datos de un trabajo realizado recientemente y orientado a analizar el discurso y la práctica en el aula.     

Characteristics of Successful Collaborations to Produce Educated Software Engineering Professionals

Currently, a large gap exists between the number of open software engineering positions and the number of qualified software engineers to fill those positions. The Industry/University (I/U) subgroup of the Working Group on Software Engineering Education and Training (WGSEET) is investigating active collaborations between companies and universities in which non-software professionals and practitioners without formal software education are reeducated to become software engineers. This paper describes the current status of work performed by the I/U subgroup in the investigation of reeducation collaborations. It is our goal to identify the common characteristics of successful collaborations in order to provide guidance to universities and companies when constructing a collaborative program, as well as to promote future collaborations. In this paper, we report on the current activity of the I/U subgroup, describe the features of successful collaborations identified so far in our research, and provide some conclusions as to the usefulness of such collaborations.     

Aplicación a la escuela de la psicología genética: La pedagogía operatoria

RESUMEN

El sistema de enseñanza actual contribuye a provocar una escisión mental entre los conocimientos teóricos y su conexión con la realidad. La Pedagogía Operatoria, resultado de la experiencia práctica y de las reflexiones teóricas, intenta unir ambos aspectos. Tras analizar los resultados de los sistemas de enseñanza actuales puede afirmarse que todos sus esfuerzos van dirigidos a que el niño desarrolle la capacidad de reproducir conocimientos ya elaborados, y no a desarrollar la facultad de elaborar conocimientos. Se propone como alternativa el aprendizaje operatorio, que supone la construcción o elaboración del conocimiento por parte del individuo. De esta forma es posible la generalización a otras situaciones similares. Si cambia el contexto operacional, la generalización no será inmediata y será necesaria una reconstrucción metodológica. El papel del maestro es fundamental en este tipo de aprendizaje, con la ayuda y orientación del psicólogo escolar.     

A constructivist approach to studying the bullwhip effect by simulating the supply chain

The Cider Game is a simulator for a supply chain-related learning environment. Its main feature is that it provides support to students in the constructivist discovery process when learning how to make logistics decisions, at the same time as noting the occurrence of the bullwhip phenomenon. This learning environment seeks a balance between direct instruction in the learning process on the part of the tutor, and a suitable and sufficient degree of freedom to regulate independent learning on the part of students. This article describes the basic learning mechanisms using the Cider Game and the graphical learning environments that it provides. We describe the functionality provided by this application, and analyse the effect over the rational understanding of the bullwhip phenomenon by the students and whether they are able to make decisions to minimise its impact, studying the differences when that decision-making learning is done individually or in groups.     

Autonomic modulation of heart rate in paraplegic wheelchair basketball players: Linear and nonlinear analysis

Abstract

This study aimed to evaluate the autonomic modulation of heart rate in sedentary paraplegics and paraplegic wheelchair basketball players with thoracic spinal cord injury below T6. Seven paraplegic wheelchair basketball players (active paraplegic group), five paraplegics who were not involved in regular exercise (sedentary paraplegic group) and 10 able-bodied participants (control group) took part in the study. The heart rate variability was evaluated by linear (low frequency and high frequency band in normalised units and low frequency/high frequency ratio) and nonlinear methods (Shannon entropy, corrected conditional entropy, and symbolic analysis).

The sedentary group presented significantly higher values for low frequency, low frequency/high frequency ratio and symbolic index with no significant variations (0V%), and also lower values for the high frequency and symbolic index with two significant unlike variation (2ULV%) compared to active paraplegic group. Shannon entropy and corrected conditional entropy analyses revealed significantly lower values in the sedentary group than in the control or active paraplegic groups. Paraplegic individuals who regularly undertake physical exercise have higher complexity of R-R interval time series, lower sympathetic modulation, and higher parasympathetic modulation than sedentary paraplegic participants.     

Moving Stories: Evaluation of a BSW Oral History Project with Older Adults with Diverse Immigration Histories

The purpose of this study was to evaluate an experiential learning project with BSW students to see if their perceptions of older adults have changed. The project consisted of an oral history project and presentation that matched BSW students with older adults from diverse ethnic backgrounds to gather their immigration narratives. The study used a single group pretest posttest design with 17 BSW students enrolled in an integrative field seminar class. Using a series of inferential analyses, BSW students’ attitudes towards older adults, future career plans, confidence with working with older adults from diverse backgrounds, and geriatric competencies were examined. Overall, a significant increase in BSW students who had varying levels of participation in project perceptions of geriatric social work competencies between pretest and posttest were found. Students who both conducted and presented the oral histories of older adults also were significantly more likely to report future plans to work with older adults compared to students who did not. Exposing BSW students to aging and diversity content has important implications towards fostering student interest in pursuing social work practice with older adults and preparing them for culturally competent social work.