O ensino da química na perspectiva da literacia química: recursos didácticos para o ensino básico

Defende-se hoje que o Ensino Básico deve, acima de tudo, dotar os alunos de competências que lhes permitam interagir com a sociedade em que se inserem, o que legitima as expectativas no sentido da formação de cidadãos capacitados para exercer a sua responsabilidade social. O processo de Reorganização Curricular do Ensino Básico actualmente em curso, em Portugal, segue esta orientação e propõe um ensino das ciências no sentido da formação dos alunos para a literacia científica. Ora, neste contexto o movimento CTS (Ciência-Tecnologia-Sociedade) assume-se como uma filosofia de ensino que muito se coaduna com os fins pretendidos. Para tal, é importante ter recursos didácticos consonantes com esta perspectiva, que suportem as práticas dos professores. O presente estudo teve por objectivo conceber e validar recursos didácticos CTS utilizáveis por professores e alunos, no âmbito do ensino e da aprendizagem do tema Sustentabilidade na Terra, no 3º ciclo do Ensino Básico. O percurso metodológico seguido incluiu várias etapas de entre as quais se destacam pela sua importância: a selecção de um contexto viável para a abordagem do tema Sustentabilidade na Terra; a planificação da abordagem CTS do referido tema; a formulação de questões-problema centradas nos domínios científico, social e tecnológico; a definição dos objectivos CTS na abordagem do problema em causa; a organização de estratégias de exploração das questões problema; a validação dos Recursos Didácticos por professores de Química qualificados e experientes. Optou-se, de uma forma fundamentada, pelo contexto geral “Barragem de Alqueva”. O produto final do presente estudo apresenta-se na forma de um Caderno de Recursos Didácticos CTS constituído por catorze actividades, organizado em Notas para o Professor, Tarefas para o Aluno e Resposta Adequada, concebidas para o contexto geral Barragem de Alqueva, e estruturadas em torno de quatro sub-temas orientadores: Água, Energia, Materiais e Resíduos. Com vista à validação dos Recursos Didácticos construídos planificou-se e realizou-se o Workshop “Sustentabilidade na Terra – perspectivas didácticas para a sua abordagem” que foi dinamizado pela autora e dirigido a um painel de treze Professores Avaliadores e no qual participaram também, como Avaliadoras Externas, duas professoras especialistas em formação de professores. VII O processo de validação evidenciou que na opinião dos avaliadores: o contexto Barragem de Alqueva é de grande relevância social e adequado à abordagem da temática Sustentabilidade na Terra; os recursos didácticos são adequados quanto ao interesse e extensão dos textos inseridos nas problemáticas desenvolvidas, quanto à adequabilidade da linguagem à faixa etária a que se destinam, quanto ao grau de profundidade dos objectos de ensino, favorecem o desenvolvimento de uma atitude crítica, favorecem o desenvolvimento de uma atitude investigativa, de recolha de dados e busca de informação complementar, contribuem para o desenvolvimento de atitudes de preservação do ambiente e contribuem para a compreensão do tema Sustentabilidade na Terra; as questões que constituem as Tarefas para o Aluno são, em geral, exequíveis pelos alunos a que se destinam. O processo de validação foi considerado quer pelos Professores Avaliadores, quer pelas Avaliadoras Externas, adequado aos objectivos do Workshop e, de um modo geral, muito importante na formulação de uma opinião sobre os Recursos Didácticos. As Avaliadoras Externas consideraram-no válido e fiável o que legitima as conclusões dele decorrentes. Deste modo, pode dizer-se que o contributo do presente estudo para a inovação no ensino da Química se reflecte no Caderno de Recursos Didácticos construído bem como na explicitação de uma metodologia útil para investigadores e professores interessados na concepção e construção de recursos CTS.

"The X in balance", a serious game to learn how to solve mathematical equations

(Prefácio) This dissertation is submitted for the degree of Masters (Engenharia Informática) at University of Évora. Under the supervision of Professor Francisco Manuel Gonçalves Coelho, i have selected to work on game design. With the specific period of time and resources, an attempt has been made to make a serious educational game. While writing this thesis, the objective was to describe a math game for solving mathematical equations. Injecting learning factor in a game, is a main concern of this project. The document is about the description of ‘X in Balance’ game. This game provides a platform for school aged students to solve the equations by playing game. It also gives a unique dimension of putting fun and math in a same platform. The document describes full detail on the project. The first chapter gives an introduction about the problem faced by students in doing maths and the learning behavior of a game. It also points out the opportunities that this game might brings and the motivation behind doing this work. It describes the game concept and its genre too. Besides, the second chapter tells state of an art of serous educational game. It defines the concept of serious game and its types. Furthermore, it justifies the flexibility of serious games to adapt all learning styles. The impact of serious games on learning is also mentioned. It also includes the related work of other researchers.

Qualidade de vida, percepção de saúde, resiliência, auto-regulação e suporte social nos adolescentes portugueses com a doencça crónica

Tese de Doutoramento em Psicologia na área de especialidade Psicologia da Saúde

Theory of mind after mild TBI in preschool children : a longitudinal perspective

Les enfants d’âge préscolaire (≤ 5 ans) sont plus à risque de subir un traumatisme crânio-cérébral (TCC) que les enfants plus agés, et 90% de ces TCC sont de sévérité légère (TCCL). De nombreuses études publiées dans les deux dernières décennies démontrent que le TCCL pédiatrique peut engendrer des difficultés cognitives, comportementales et psychiatriques en phase aigüe qui, chez certains enfants, peuvent perdurer à long terme. Il existe une littérature florissante concernant l'impact du TCCL sur le fonctionnement social et sur la cognition sociale (les processus cognitifs qui sous-tendent la socialisation) chez les enfants d'âge scolaire et les adolescents. Or, seulement deux études ont examiné l'impact d'un TCCL à l'âge préscolaire sur le développement social et aucune étude ne s'est penchée sur les répercussions socio-cognitives d'un TCCL précoce (à l’âge préscolaire). L'objectif de la présente thèse était donc d'étudier les conséquences du TCCL en bas âge sur la cognition sociale. Pour ce faire, nous avons examiné un aspect de la cognition sociale qui est en plein essor à cet âge, soit la théorie de l'esprit (TE), qui réfère à la capacité de se mettre à la place d'autrui et de comprendre sa perspective. Le premier article avait pour but d'étudier deux sous-composantes de la TE, soit la compréhension des fausses croyances et le raisonnement des désirs et des émotions d'autrui, six mois post-TCCL. Les résultats indiquent que les enfants d'âge préscolaire (18 à 60 mois) qui subissent un TCCL ont une TE significativement moins bonne 6 mois post-TCCL comparativement à un groupe contrôle d'enfants n'ayant subi aucune blessure. Le deuxième article visait à éclaircir l'origine de la diminution de la TE suite à un TCCL précoce. Cet objectif découle du débat qui existe actuellement dans la littérature. En effet, plusieurs scientifiques sont d'avis que l'on peut conclure à un effet découlant de la blessure au cerveau seulement lorsque les enfants ayant subi un TCCL sont comparés à des enfants ayant subi une blessure n'impliquant pas la tête (p.ex., une blessure orthopédique). Cet argument est fondé sur des études qui démontrent qu'en général, les enfants qui sont plus susceptibles de subir une blessure, peu importe la nature de celle-ci, ont des caractéristiques cognitives pré-existantes (p.ex. impulsivité, difficultés attentionnelles). Il s'avère donc possible que les difficultés que nous croyons attribuables à la blessure cérébrale étaient présentes avant même que l'enfant ne subisse un TCCL. Dans cette deuxième étude, nous avons donc comparé les performances aux tâches de TE d'enfants ayant subi un TCCL à ceux d'enfants appartenant à deux groupes contrôles, soit des enfants n'ayant subi aucune blessure et à des pairs ayant subi une blessure orthopédique. De façon générale, les enfants ayant subi un TCCL ont obtenu des performances significativement plus faibles à la tâche évaluant le raisonnement des désirs et des émotions d'autrui, 6 mois post-blessure, comparativement aux deux groupes contrôles. Cette étude visait également à examiner l'évolution de la TE suite à un TCCL, soit de 6 mois à 18 mois post-blessure. Les résultats démontrent que les moindres performances sont maintenues 18 mois post-TCCL. Enfin, le troisième but de cette étude était d’investiguer s’il existe un lien en la performance aux tâches de TE et les habiletés sociales, telles qu’évaluées à l’aide d’un questionnaire rempli par le parent. De façon intéressante, la TE est associée aux habiletés sociales seulement chez les enfants ayant subi un TCCL. Dans l'ensemble, ces deux études mettent en évidence des répercussions spécifiques du TCCL précoce sur la TE qui persistent à long terme, et une TE amoindrie seraient associée à de moins bonnes habiletés sociales. Cette thèse démontre qu'un TCCL en bas âge peut faire obstacle au développement sociocognitif, par le biais de répercussions sur la TE. Ces résultats appuient la théorie selon laquelle le jeune cerveau immature présente une vulnérabilité accrue aux blessures cérébrales. Enfin, ces études mettent en lumière la nécessité d'étudier ce groupe d'âge, plutôt que d'extrapoler à partir de résultats obtenus avec des enfants plus âgés, puisque les enjeux développementaux s'avèrent différents, et que ceux-ci ont potentiellement une influence majeure sur les répercussions d'une blessure cérébrale sur le fonctionnement sociocognitif.

Contextual factors related to chronic condition in portuguese adolescents: Highlights from the HBSC/WHO study

Adolescence’s changes may become more pronounced when living with a chronic condition (CC). This study aims to examined the differences in satisfaction with family life, perception of school competence and “pressure with homework” of Portuguese adolescents’ 1) living with CC; 2) how living with CC affects school participation; taking into account age, gender and family socioeconomic status (SES). Five thousand fifty Portuguese adolescents (mean age 14 ± 1.85) of the Health Behaviour in School-aged Children (HBSC/WHO) were included. Results showed increased vulnerability in adolescents living with CC, presenting a lower satisfaction with family life and poor school outcomes. Younger boys, having a higher SES and not having CC are significantly associated with satisfaction with family life. Older girls, having a lower SES and living with CC were associated with more stress related to school work. Future interventions should include these features combined with ‘listening’ to adolescents and their needs, allowing their participation in the promotion of personal health.

Pathways to adulthood and their precursors: Roles of gender and race

Research on the transition to adulthood dates back nearly four decades, but a growing body of research has taken a new approach by investigating multiple demographic markers in the transition to adulthood simultaneously. Using the life course perspective, this dissertation is built on the literature by first examining contemporary young adults’ pathways to adulthood from ages 18 to 30 and their differences by gender. Data for this study were drawn from the National Longitudinal Survey of Youth 1997; the final sample included 2,185 men and 2,086 women. The college-educated single workers pathway, the college-educated married working parents pathway, and the high-school-educated single parents pathway were identified in both genders. For men, the study also identified the high-school-educated single workers pathway and the high-school-educated married working parents pathway. For women, the study also identified the high-school-educated workers pathway and the high-school-educated married parents pathway. Not only did the definitions of some pathways differ by gender, but even in the pathways with the same definition, gender differences were found in the probabilities of being married, of being a parent, or of being employed full-time. Based on the pathways to adulthood identified, this research examined the family and adolescent precursors and whether race moderates the associations between family structure experiences and young adults’ pathways to adulthood. Parental education, family structure, GPA, delinquency, early sexual activity, and race/ethnicity were the family and adolescent precursors that distinguished among pathways taken by the youth. Two interactions between race and family structure/instability were identified. The positive association between growing up in a single-parent family and the odds of taking the high-school-educated single workers pathway compared to the college-educated married working parents pathway was weaker for Black males than for White males. The positive association between family instability and the odds of taking the college-educated single workers pathway compared to the college-educated married working parents pathway was weaker for Black females than for White females. This dissertation accounted for changes in the multiple statuses related to becoming an adult by following contemporary young adults for 12 years. More research on contemporary young adults’ pathways to adulthood and subgroup differences in the effects of precursors are recommended. Limitations and implications of this study are discussed.

Português língua de herança em contexto plurilingue na Finlândia : aspetos de aquisição/aprendizagem da competência pragmática e expressão da delicadeza

Os fluxos migratórios das últimas décadas têm contribuído para que as comunidades de falantes de português se estabeleçam um pouco por todo o mundo, nomeadamente, nos países escandinavos. Um desses países de acolhimento, a Finlândia, tem desenvolvido esforços para a integração dos imigrantes que aí se estabelecem, designadamente, através da promoção de políticas de língua, que visam o ensino da língua de herança aos alunos em idade escolar. Tem sido neste contexto que as pequenas comunidades lusófonas, a viverem no país, têm podido facultar aos filhos, imigrantes de primeira e segunda gerações, acesso ao ensino formal da sua língua de herança, o português. Os sujeitos da nossa amostra fazem parte de uma dessas pequenas comunidades e residem em Tampere, na Finlândia, onde frequentam escolas cuja língua de ensino é o finlandês. O presente trabalho pretende, por um lado, dar conta da realidade sociocultural daqueles alunos de Português Língua Não-Materna, e, por outro, visa refletir sobre a aquisição/ aprendizagem da competência pragmática por parte destes sujeitos, falantes de herança, através da realização que fazem de atos ilocutórios diretivos – de pedido e de ordem –, bem como, sobre o grau de formalização das expressões de delicadeza que fazem. Por conseguinte, elaborámos uma Ficha Sociolinguística para recolha de dados referentes ao contexto familiar, sociocultural e linguístico dos alunos. Posteriormente, elaborámos e aplicámos um teste linguístico, de Tarefas de Elicitação do Discurso, com vista à recolha de dados para a construção de um corpus linguístico que nos permitisse desenvolver o presente estudo. A aplicação do teste linguístico e consequente tratamento dos dados recolhidos revelaram que as escolhas pragmáticas dos sujeitos são condicionadas pelo contexto sociocultural e linguístico em que estão imersos. Constatámos, igualmente, que a generalidade dos alunos recorre a duas estratégias de mitigação do discurso, pelo uso de duas expressões de delicadeza: a fórmula «se faz favor»/«por favor» e o verbo modal «poder».

Young people's well-being and the economic crisis: How does parental unemployment and family wealth affect the downturn experience?

Background: Portugal is among the European countriesmost severely hit by the economic recession and the fifth with the highest unemployment rate. Given that adolescents' development is highly influenced by their living contexts, monitoring the repercussions of the economic recession is essential for the evaluation and improvement of their current and future public health. Objective: To investigate youth perceived repercussions of the economic recession, its association with life satisfaction, as well as to assess differences across parental employment status and family perceived wealth. Methods: Data were drawn from the Portuguese 2014 Health Behaviour in School-aged children survey, aWHO collaborative cross-national study, with a nationally representative sample of 2748 students (Mage = 14.7 years ± 1.2; 48% boys). Descriptive statistics and linear regression models were performed. Results: Levels of life satisfaction are lower when young people perceive that the economic recession generated negative lifestyle changes. Having unemployed parents was found to be significantly associated with perceiving such repercussions and family wealth to decrease the perception of repercussions of the recession. Conclusions: Findings enhance our understanding of how Portuguese youth are being affected by the socioeconomic conditions surrounding them. Such information contributes to improve future research and also allow some considerations about the policies aimed at protecting young people'swellbeing during a period of high unemployment and socioeconomic downturn.

Character in Context: Informing Character Education Programming

The Positive Youth Development (PYD) perspective is a strength-based conceptualization of youth. It highlights the importance of mutually beneficial relationships between youth and their environment to develop the “Five Cs”, key assets that include character. Character has long been a subject of programming due to its focus on helping children lead moral, empathic, and prosocial lives. There are, however, many limitations in character research, including poorly operationalized definitions of character; a failure to examine the developmental and broader social context in which character exists; and a lack of evaluation of more practical character programming. The goal of this dissertation was to address these gaps in knowledge and inform the character education programming literature. The first study examined the relationships among age, gender, the school social context, and character. Moral character was negatively associated with grade, and being a girl was positively associated with moral character. The relationships between positive peer interactions at school and character (fairness, integrity) were stronger among students who reported low initial moral character when positive peer interactions was high. In the second study, the Build Character: Build Success Program, a character education program, was evaluated over six months to examine its effects on character behaviours, victimization, and school climate. No program effects were found for students in grades 1 to 3, but a slight decrease in victimization in one experimental school was found for students in grades 4 to 8. This lack of general program effects may be due to the short-term nature of the intervention, which may not have been long enough to result in measurable behaviour change. Implementation data indicated that teachers did not teach all program elements, which also may have influenced the results of the program evaluation. The present dissertation contributes to knowledge about character and its programming by: introducing new measures to operationalize character, discovering developmental patterns in character in school-aged children, highlighting gender differences in character, examining character within its broad social context, and evaluating short-term character education programming.

Equivalent Hearing Loss in Children

Early intervention is the key to spoken language for hearing impaired children. A severe hearing loss diagnosis in young children raises the urgent question on the optimal type of hearing aid device. As there is no recent data on comparing selection criteria for a specific hearing aid device, the goal of the Hearing Evaluation of Auditory Rehabilitation Devices (hEARd) project (Coninx & Vermeulen, 2012) evolved to collect and analyze interlingually comparable normative data on the speech perception performances of children with hearing aids and children with cochlear implants (CI). METHOD: In various institutions for hearing rehabilitation in Belgium, Germany and the Netherlands the Adaptive Auditory Speech Test AAST was used in the hEARd project, to determine speech perception abilities in kindergarten and school aged hearing impaired children. Results in the speech audiometric procedures were matched to the unaided hearing loss values of children using hearing aids and compared to results of children using CI. 277 data sets of hearing impaired children were analyzed. Results of children using hearing aids were summarized in groups as to their unaided hearing loss values. The grouping was related to the World Health Organization’s (WHO) grading of hearing impairment from mild (25–40 dB HL) to moderate (41–60 dB HL), severe (61-80 dB HL) and profound hearing impairment (80 dB HL and higher). RESULTS: AAST speech recognition results in quiet showed a significantly better performance for the CI group in comparison to the group of profoundly impaired hearing aid users as well as the group of severely impaired hearing aid users. However the CI users’ performances in speech perception in noise did not vary from the hearing aid users’ performances. Within the collected data analyses showed that children with a CI show an equivalent performance on speech perception in quiet as children using hearing aids with a “moderate” hearing impairment.

Actividad física, imagen corporal y condiciones de vida. Un abordaje teórico desde los determinantes y la determinación social de la salud

El objetivo de este trabajo fue analizar la construcción social del conocimiento en Actividad física desde dos planteamientos teóricos de la salud centrando el análisis en la relación con la imagen corporal y las condiciones de vida. Se trata de un estudio teórico desde el análisis de contenido de corte narrativo de 98 artículos desarrollado en cinco etapas a través de: rastreo de documentos en bases de datos en el periodo 2000-2014, revisión de artículos, y análisis y hallazgos de significados, sentidos o contenidos. Como hallazgo importante se puede mencionar que en la literatura científica relacionada con la triada Actividad física-imagen corporal-condiciones de vida predomina la construcción del conocimiento a partir de modelos hegemónicos y dominantes que priorizan la intensidad, la frecuencia y el tiempo dedicado a la AF, la estandarización en la comparación de la apariencia física y la medición de elementos materiales en el modo de vivir de las personas, principalmente desde el abordaje de los determinantes sociales de la salud. Se concluye que es necesario revisar las poblaciones que incluyendo en los estudios al estar concentrados el conocimiento en solo unos grupos; así como se hace explícita la necesidad de revisar cuales son los aportes de la Educación Física y otras disciplinas (ciencias sociales) para una mayor comprensión teórica y práctica de la AF.

Normative reference values for the 20-meter shuttlerun test in a population-based sample of schoolchildren in Bogota, Colombia: The FUPRECOL Study

Our aim was to determine the normative reference values of cardiorespiratory fitness (CRF) and to establish the proportion of subjects with low CRF suggestive of future cardio-metabolic risk.

Etapas de cambio conductual relacionado al consumo de frutas y verduras en escolares de Bogotá, Colombia

Objetivo: Describir la relación de las etapas de cambio conductual frente al consumo de frutas y verduras con el estado nutricional en un grupo de escolares de Bogotá, Colombia, pertenecientes al estudio FUPRECOL. Métodos: Estudio de corte transversal en 1.922 niños y adolescentes entre 9 y 17 años, pertenecientes a nueve instituciones educativas oficiales de Bogotá. Se aplicó de manera auto-diligenciada el cuestionario de cambio de comportamiento (CCC-Fuprecol) validado en el “estudio FUPRECOL” y se calculó el Índice de Masa Corporal (IMC) como marcador del estado nutricional. Se calcularon prevalencias y se establecieron asociaciones mediante modelos de regresión logística binaria. Resultados: La muestra estuvo conformada por 1.045 niños-niñas y adolescentes vs hombres (45.6%) y mujeres (54.3%) y 877. La mayor proporción de consumo de frutas en el subgrupo de hombres (niños entre 9 y 12 años vs. adolescentes entre 13 y 17 años) se observó en la etapa de mantenimiento, (53.3 % vs. 38.8 %, X2 p<0.001), seguido de preparación/acción (25.0 % vs. 32.4 %, X2 p<0.001). En mujeres entre 9 y 12 años, la mayor proporción se ubicó en la etapa de mantenimiento (54.4 %), a diferencia de las adolescentes entre 13 y 17 años que acusaron mayor frecuencia la etapa de preparación/acción (42.0 %). Se observó que pertenecer al grupo de mujeres, se asociaba como variable para el cumplimiento de la recomendación mínima de frutas y verduras con valores de OR 1.54 (IC95% 1.22-1.93) y OR 1.48 (IC95% 1.19-1.84), respectivamente. Conclusiones: Aproximadamente, 66 % de los participantes tienen la intención o la voluntad de cumplir las recomendaciones de consumo de frutas y verduras. La identificación temprana de niños y adolescentes con bajo consumo de alimentos vegetales, permitirá implementar intervenciones para promover comportamientos saludables a fin de prevenir el riesgo cardiometabólico en la edad adulta.

Factors associated with depression symptoms in high school students in São Paulo, Brazil

OBJECTIVE: To assess factors associated with depression symptoms in high school students. METHODS: A cross-sectional study involving high school students was conducted in the city of São Paulo, Brazil, 2001. A total of 724 students aged 14-18 years answered questionnaires on life and health conditions. Another questionnaire was applied to working (44.8%) and unemployed (22.9%) students to collect information on working conditions. Factors associated to depressive disorders were analyzed using multiple logistic regression controlled for occupational status. RESULTS: Overall prevalence rate of depression was 7.5%. Rates according to gender were 39 (10.3%) in females and 15 (4.3%) in males. The multiple logistic regression analysis showed that factors associated with depressive disorders were: poor self-perception of health (OR=5.78), being female (OR = 2.45), and alcohol consumption (OR=2.35). CONCLUSIONS: The study results showed that sociodemographic, lifestyle and health variables were associated with symptoms of depression in this population. These ndings suggest that it is important to have mental health professionals available in high schools for early detection of mental conditions and student counseling.

Occupational accidents among middle and high school students of the state of São Paulo, Brazil

OBJECTIVES: To estimate the prevalence of occupational injuries and identify their risk factors among students in two municipalities. METHODS: A cross-sectional survey was conducted in public schools of the municipalities of Santo Antonio do Pinhal and Monteiro Lobato, Brazil. A stratified probabilistic sample was drawn from public middle and high schools of the study municipalities. A total of 781 students aged 11 to 19 years participated in the study. Students attending middle and high school answered a comprehensive questionnaire on living and working conditions, as well as aspects of work injuries, and health conditions. Multiple logistic regression models were fitted to estimate risk factors of previous and present occupational injuries. RESULTS: Of 781 students, 604 previously had or currently have jobs and 47% reported previous injuries. Among current workers (n=555), 38% reported injuries on their current job. Risk factors for work injuries with statistically significant odds ratio >2.0 included attending evening school, working as a housekeeper, waiter or brickmaker, and with potentially dangerous machines. CONCLUSIONS: The study results reinforce the need of restricting adolescent work and support communities to implement social promotion programs.