Constitutive Pluralism of Chemistry: Thought Planning, Curriculum, Epistemological and Didactic Orientations

Maybe the most difficult aspect of thinking about chemistry arises from the fact that chemistry isn’t an homogeneous subject. As a central science, it draws on a range of philosophical perspectives which in turn can result in different cognitive, learning and teaching styles in chemical education. This idea, apparently non-controversial, needs to be validated by more research. Without assuming this constitutive pluralism, describing it, and determining it, it becomes difficult to think of curricular goals and content. Thus, if we intend to improve the teaching of chemistry it is necessary, first, to assume explicitly this constitutive pluralism, then to map it in order to find the guiding principles: first for the mind (thought process), then for the curriculum and finally for the teaching, in such a way that it is as close as possible to the chemical way of operating and thinking. This is the aim of this paper. It reports the authors’ experiences in drafting structural ideas and planning for the subject “didactic of chemistry” based on the philosophy of chemistry at the University of Porto in Portugal.     

Dislexia fonémica: decodificación-codificación fonémica y comprensión lectora silenciosa

Resumen

Se estudiaron los procesos fonémicos de decodificación y codificación en relaáón a la comprensión lectora en una muestra de 49 disléxicos de 10 a 12 años, comparándolos con un grupo de 32 lectores normales, pareados por edad, curso y nivel socio-económico. Todos los niños tenían un CI normal y se les aplicó cuatro tests verbales estandarizados, más tareas experimentales de percepción, discriminación e integración auditivo-fonémica y de comprensión.

Se pudo delimitar, dentro de los disléxicos, un subgrupo de ellos con un rendimiento inferior en decodificación de pseudo-palabras, perceptión auditivo-fonémica, comprensión verbal oral y comprensión lectora silenciosa, lo que confirmó la hipótesis principal del estudio. Las diferencias entre disléxicos y lectores normales también fueron significativas. Los procesos fonémicos más estrechamente relaáonados con lectura y deletreo de pseudopalabras fueron discriminación auditiva de palabras similares e inversión oral de secuencias de letras CVC (trigramas). Esta investigación forma parte de un estudio de seguimiento.     

Development of a Measure to Assess Youth Self-reported Experiences of Activity Settings (SEAS)

There is a need for psychometrically sound measures of youth experiences of community/home leisure activity settings. The 22-item Self-Reported Experiences of Activity Settings (SEAS) captures the following experiences of youth with a Grade 3 level of language comprehension or more: Personal Growth, Psychological Engagement, Social Belonging, Meaningful Interactions, and Choice & Control. Forty-five youth aged 14–23 years (10 with severe disabilities) completed the SEAS in 160 leisure activity settings. The SEAS has good to excellent internal consistency (Cronbach’s alpha from 0.71 to 0.88) and moderate test–retest reliability (mean scale intra-class correlation coefficient = 0.68), as expected due to changes in activity settings over time. The SEAS was able to differentiate various types of activity settings and participation partners. The SEAS can be used to gain greater understanding of situation-specific experiences of youth participating in various types of recreation and leisure activity settings, including youth with different types of disabilities and those without disabilities.     

Longitudinal associations between motor competence and different physical activity intensities: LabMed physical activity study

An appropriated level of motor competence is essential for children´s healthy growth and development and a key factor in the promotion of lifelong active lifestyles and health.

The purpose of this study was to examine associations between motor competence and different physical activity intensities (light, moderate, moderate-to-vigorous and vigorous physical activity), as well as total physical activity, over a two-year period, in adolescents. The sample comprised of 103 adolescents (13.49 ± 0.87 years, 53 girls), from the north of Portugal. Motor competence was evaluated with the body coordination test, Körperkoordination-Test-für-Kinder. Physical activity was objectively assessed with GT1M accelerometers (ActiGraph, Pensacola, FL, USA). Physical activity variables were expressed as proportions of accelerometer wear time. Regression analyses showed positive longitudinal associations between motor competence at baseline and moderate physical activity (B = 0.0033, p = 0.018), moderate-to-vigorous physical activity (B = 0.0052, p = 0.024) and total physical activity (B = 0.067, p = 0.040) at follow up, after adjustments for age, sex, the corresponding physical activity intensity at baseline, body mass index, pubertal stage and socioeconomic status. Our ?ndings highlight the importance of motor competence development to promote moderate-to-vigorous physical activity during adolescence.     

University students’ conceptions of learning across multiple domains

Research on students’ conceptions of learning is a growing and complex area of interest in the field of psychology of education. Even though much of the investigation addressed to explore conceptions of learning at the university level, still less research has considered how naïve (i.e. ‘learning as reduction of deficit knowledge through individual effort’) and sophisticated (i.e. ‘learning as opportunity and self-efficacy’) conceptions of learning are related to personal and contextual factors. This research investigated how gender, academic area, and level of study influence university students’ conceptions of learning. Three hundred forty-six university students participated in the study. They were either from humanities (240) or technical-scientific (106) areas of study and they were attending either a Bachelor (140) or Master’s degree (206) course. Conceptions of learning were explored using a self-report instrument (Learning Conceptions Questionnaire; LCQ). A MANOVA revealed that females show conceptions of learning more related to social and motivational aspects of learning with a greater personal involvement, compared with males. No typical pattern of conceptions of learning was found for humanities students or for technical-scientific students. Increasing with the level of study, students showed both naïve and sophisticated conceptions of learning increased, since both ‘learning as reduction of deficit knowledge through individual effort’ and ‘learning as opportunities and self-efficacy’ were more likely. Implications of these results and future lines of research will be discussed.     

Teachers as Change‐Agents for Young People with Special Needs: an approach to teacher training in Portugal

The practice of integrated education for pupils with special needs has been attempted nationally in Portugal. This has prompted the development of area support teams across the country. Whilst this is a positive move, it has created a pressure for specialist training of teachers. This demand is yet to be fulfilled; an example of an inservice course is outlined in this report.     

Stone consolidation: The role of treatment procedures

Four types of carbonate stones and three consolidation products were used in a systematic study to assess the influence of the application procedures on the amount of product applied, as a primary step to evaluate consolidation treatments. Microdrilling, ultrasonic velocity and flexural resistance were used as performance indicators. The amount of product of a specific treatment and its action depend on the application procedures, both when the treatments are carried out in the laboratory and on site. The results are expected to contribute to the standardisation of testing protocols on stone consolidation.     

THE EFFECTS OF A SOCIAL–EMOTIONAL LEARNING PROGRAM ON ELEMENTARY SCHOOL CHILDREN: THE ROLE OF PUPILS’ CHARACTERISTICS

This quasi‐experimental exploratory study investigated whether a social–emotional learning program, implemented during a 1‐year period, could lead to gains in social–emotional competencies and a reduction in internalizing and externalizing problems. Furthermore, it showed which pupils would benefit most from the program. The program was applied to 213 fourth‐grade Portuguese pupils. One hundred five controls followed an Origami curriculum during the same period. Sixteen teachers also participated in this study. Self‐report (pupils) and hetero‐report (teachers) questionnaires were administered before and after the intervention. There were significant intervention gains in some social–emotional competencies, namely, peer relations and social competence, but no gains were found in internalizing and externalizing problems. Intervention pupils with average pre‐test scores profited more in self‐management and peer relations than controls. Boys showed greater gains in self‐management, aggressiveness, and social problems than girls. There were no significant differences regarding socioeconomic status.