Representation of the cell and its processes in high school students: An integrated view

This paper presents an integrated view of the ideas and conceptual problems of high school students with respect to the cell, its processes, structure and relation to the functions of multicellular organisms. The theme of cell has divided into eight topics, with a questionnaire for each topic. In these topics, different levels of representation and understanding are distinguished between general considerations about plants and animals, those connected with processes at organ and system levels and, finally, the level of cell processes. Data from 1200 students were analysed. Results show that students have an analogical mechanism that establishes an isomorphism between the representation of the functioning of multicellular organisms of cell processes. A series of problems in understanding was also shown. Results imply that these problems are mainly due to students' lack of differentiation between some processes at organism and organ level, and have important implications for learning this subject. Finally, some suggestions are made for teaching.     

REEARCH REPORT

This paper addresses the concept of geological time as used by students who face tasks that demand three types of skills: to locate events in time, to order them according to time calendar, and to manage time intervals. The empirical study consisted of asking high school students as well as technical school students to carry out tasks that required the use of the three previously mentioned components. It was found, first, that students frequently used erroneous temporal labels, which shows a lack of knowledge that would allow them to locate events within the context of geobiologic data. Second, the students did not store the representation of a succession of events, but were nevertheless able to create it by means of the deductive use of previous knowledge. Finally, the importance of having an appropriate representation of geological time intervals became patent while observing the students' difficulties in understanding geologic changes.     

On not being able to read or speak Malayalam: language and region in Kerala

Abstract

This paper attempts to read aspects of language, history, and literariness historically from the perspective of both Brazil and Kerala. It is also an attempt to compare two very distinct places from within a framework centred on the South. Initially, region and nation are discussed, as well as modernity and development, and the issue of thinking South–South connections from an anthropological perspective. Next, the matter of the complex connected histories of Kerala within the Indian Ocean is mentioned, including Portuguese colonial history. The image and influence of Latin America in Kerala is briefly brought up, especially in what concerns literary influence. There follows an extended discussion of issues of literacy and the rise of the novel in Kerala as well as the historical intricacies of the construction of Malayalam as a modern medium. A contrast with the literary construction of modernity in Brazil is made, and the importance of English in Kerala is accordingly highlighted as well as the issue of the coloniality of the Portuguese within Brazil's complex creolized history. An analysis of the pioneering novel of Chandumenon is offered, and a comparison with a novel in Brazil is subsequently sketched. The different historical contexts of nineteenth century Brazil and Kerala are stressed. The close interrelatedness between issues of language, nation, and region is emphasised as well as the internal complexities of modernity in both regions.     

The pedagogical limitations of inclusive education

Abstract

The aim of this article is to contribute to a better conceptual and practical delimitation of inclusive education. A pedagogy that reacts to the need to face the dilemmas of difference. An interpretive and critical methodology with a documentary basis and a normative-pedagogical perspective is used. The results show a tension between theoretical approaches and the practical achievements of inclusive education. The article concludes by considering the position that if the most basic definition of education is essentially inherently inclusive, as it aims to foster the maximum development of everyone, then for the same reason it must also essentially be differentiating. This is precisely because the limits of inclusive education are in recognising and promoting excellence in difference, while the limits of differentiated education lie in recognising and promoting inclusion.     

Knee joint position sense of roller hockey players: a comparative study

This study aimed to compare knee joint position sense of roller hockey players with an age-matched group of non-athletes. Forty-three male participants voluntarily participated in this cross-sectional study: 21 roller hockey players (mean age: 23.2 ± 4.2 years old, mean weight: 81.8 ± 9.8 kg, mean height: 180.5 ± 4.1 cm) and 22 age-matched non-athletes (mean age: 23.7 ± 3.9 years old, mean weight: 85.0 ± 6.2 kg, mean height: 181.5 ± 5.0 cm). Knee joint position sense of the dominant limb was evaluated using a technique of open-kinetic chain and active knee positioning. Joint position sense was reported using absolute, relative and variable angular errors. The main results indicated that the group of roller hockey players showed significantly lower absolute (2.4 ± 1.2º vs. 6.5 ± 3.2º, p ≤ 0.001) and relative (1.7 ± 2.1º vs. 5.8 ± 4.4º, p ≤ 0.001) angular errors in comparison with the non-athletes group. In conclusion, the results from this present study suggest that proprioceptive acuity, assessed by measuring joint position sense, is increased in roller hockey players. The enhanced proprioception of the roller hockey players could contribute to injury prevention and improved performance during sporting activities.     

Reading prosody development in Spanish children

Reading prosody is considered one of the essential markers of reading fluency, alongside accuracy and speed. The aim of our study was to investigate how development of reading prosody in Spanish children varies with sentence type and length. We compared primary school children from the third and fifth grades with an adult sample. Participants were recorded reading aloud a narrative text including short and long declarative, exclamatory and interrogative sentences. Recordings were analysed using Praat software to measure several prosodic features (i.e., pauses, duration, pitch and intensity). We found that third-grade children had not yet developed an adult-like prosody: they made more pauses, had a flatter melodic contour and had difficulty anticipating sentence structure. Fifth-graders displayed some features of adult prosody. Both length and type of sentence influenced the expressiveness of reading in the three groups. We conclude that reading expressiveness is closely related to reading experience and develops in a similar way to decoding and reading speed.     

Stressors,Self‐Efficacy,Coping Resources,and Burnout among Secondary School Teachers in Spain

The relationships among teacher occupational stressors, self‐efficacy, coping resources, and burnout were investigated in a sample of 247 Spanish secondary school teachers. Concretely, two specific aims were formulated in order to examine the effect of teaching stressors on teacher burnout and the role of self‐efficacy and school coping resources as mediator or moderator variables in the stressor–burnout relationship. Teachers reported that when their pedagogical practice in the school setting was being interfered with or hindered by a set of factors from the multiple contexts involved in students’ learning, problems of burnout occurred. In addition, results revealed that teachers with a high level of self‐efficacy and more coping resources reported suffering less stress and burnout than teachers with a low level of self‐efficacy and fewer coping resources, and vice versa.     

Special Education: an overview of recent changes

Over the last two decades, there have been major changes in policy and practice in special education. Three theoretical models are outlined together with analysis of their underlying assumptions, effects on practice and implications for innovation and change. Finally, a brief discussion of new directions in the training of specialist teachers is presented.     

Child abuse: An operational longitudinal study

A one-year longitudinal study was conducted of the medical, social and legal status of 102 (65%) of 156 abused children identified during 1975. The data revealed that the prognosis is grave with almost half of the sample showing indication of repeated abuse or residual effects of the Initial incident. Most of the abused children were returned to their homes with minimal supervision by an otherwise active Division of Family Service of the State Welfare Agency. Children under three years of age were at higher risk than older patients. Improvement was associated most frequently with separation of the perpetrator and the victim or by receipt of appropriate supportive measures. The data emphasize the therapeutic importance of interagency and Interprofessional communication and cooperation.Since the syndrome of the battered child was established,^(1,2) considerable advances have been made in the diagnosis, treatment and protection of the abused children.(3) The prognosis is still grave. A retrospective study showed that the majority of the abused children were developmentally retarded⁽⁴⁾ and a prospective study confirmed this finding.⁽⁵⁾Those seeking to promote the welfare of the identified abused child are confronted with severely limited therapeutics alternative, a grave prognosis and a paucity of data to guide them in their decisions.The present one-year longitudinal study of abused children seen during 1975 at Cardinal Glennon Memorial Hospital for Children was undertaken with the goal of providing Information on the current system of managing the Identified abused child.