Diagnosing Portuguese Students' Misconceptions about the Mineral Concept

Educational researchers and teachers are well aware that misconceptions—erroneous ideas that differ from the scientifically accepted ones—are very common amongst students. Daily experiences, creative and perceptive thinking and science textbooks give rise to students' misconceptions which lead them to draw erroneous conclusions that become strongly attached to their views and somehow affect subsequent learning. The main scope of this study was to understand what students consider a mineral to be and why. Therefore, the goals were (1) to identify eleventh-grade students' misconceptions about the mineral concept; (2) to understand which variables (gender, parents' education level and attitude towards science) influenced students' conceptions; and (3) to create teaching tools for the prevention of misconceptions. In order to achieve these goals, a diagnostic instrument (DI), constituted of a two-tier diagnostic test and a Science Attitude Questionnaire, was developed to be used with a sample of 89 twelfth-grade students from five schools located in central Portugal. As far as we know, this is the first DI developed for the analysis of misconceptions about the mineral concept. Data analysis allows us to conclude that students had serious difficulties in understanding the mineral concept, having easily formed misconceptions. The variables gender and parents' education level influence certain students' conceptions. This study provides a valuable basis for reflection on teaching and learning strategies, especially on this particular theme.     

Las posibilidades de un modelo teórico para la enseñanza de la comprensión lectora

Resumen

La autora aborda la problemática de la enseñanza de la comprensión lectora desde la perspectiva del modelo interactivo. Tras explicitar las características de este módelo y los avances que supone respecto de formalizaciones anteriores—bottom up y top down—, el artículo se centra en las indicaciones que de él se desprenden para la planificación de actividades de enseñanza/aprendizaje cuyo objeto es la comprensión de textos. Se insiste particularmente en la imposibilidad de aplicar mecánicamente dichos principios, y en la función primordial del maestro para promover en los alumnos estrategias adecuadas de comprensión lectora.     

Sex education in Spain: the relevance of teachers’ training and attitudes / Educación sexual en España: importancia de la formación y las actitudes del profesorado

Abstract

This research has two main aims: a) the study of Spanish teachers’ training and attitudes towards sex education, as well as the delivery of this subject in classrooms, while also exploring the existence of differences according to personal and professional characteristics; and b) to examine the association between teachers’ training and attitudes, and the extent to which these variables predict the delivery of sex education. A total of 3,695 Infant, Primary, Secondary and High school teachers (66.1% women, 33.9% men) throughout the country completed a voluntary online questionnaire that inquired about their training and attitudes towards sex education, their delivery or non-delivery of this subject in classrooms, and other personal and professional characteristics. Analyses indicate that participants show positive attitudes towards sex education, but that 43.3% are not trained in this issue, and 48.6% do not teach it at school. Some significant differences by sex, educational stage and type of school have been found. In addition, trained teachers show more positive attitudes to sex education. Finally, having more positive attitudes and, to a lesser extent, having prior training, positively predicts the delivery of sex education. These results highlight the importance of reviewing and improving teachers’ training on sexuality and sex education, with particular emphasis on attitudinal contents.     

Cognitive skills used to solve mathematical word problems and numerical operations: a study of 6- to 7-year-old children

This study investigates the relationship between skills that underpin mathematical word problems and those that underpin numerical operations, such as addition, subtraction, division and multiplication. Sixty children aged 6–7 years were tested on measures of mathematical ability, reading accuracy, reading comprehension, verbal intelligence and phonological awareness, using a mix of standardised and experimenter-designed tests. The experimental hypothesis was that mathematical word problems will call upon cognitive skills that are different and additional to those required by numerical operations, in particular verbal ability and reading comprehension, while phonological awareness and reading accuracy will be associated with both types of mathematical problems. The hypothesis is partly affirmed and partly rejected. Reading comprehension was found to predict performance on mathematical word problems and not numerical operations, and phonological awareness was found to predict performance on both types of mathematics. However, the predictive value of verbal ability and reading accuracy was found to be non-significant.     

Predicting child outcomes from preschool quality in Portugal

The main purpose of this study is to analyze whether quality of preschool classrooms relates to 4- and 5-year-old children developmental outcomes. The study was conducted in 60 classrooms in Porto Metropolitan Area, Portugal. Children (N?=?215) were evaluated in the literacy, math, and behavior domains. Preschool quality was assessed through classroom observations using the ECERS-R and the Early Language and Literacy Classroom Observation. Global classroom quality although relatively low, predicted children’s literacy skills and behavior but not math skills. Quality of language and literacy environment was not consistently related to child outcomes. Mother educational level stood out as consistently predicting most of child developmental outcomes. The relevance of these results is discussed considering the Portuguese educational scenario, in the realm of an international context.     

Sources of differences in the pattern of adoption of organizational and managerial innovations from early to late 1990s, in the UK

This paper explores empirically how the pattern of adoption of an organizational and managerial innovation changes as diffusion occurs. In particular, the paper investigates whether and how differences over time in the patterns of use of organisational innovation are related to changes in the characteristics of the innovation in terms of its functionality and relative complementarity with other innovations, as well as to changes in the needs and capabilities of firms. For this purpose, firm level data from the British Workplace Industrial Relations Survey, in 1990 and 1998, are used.     

Mapping public support for innovation: A comparison of policy alignment in the UK and France

This paper proposes and tests a three-dimensional model of public support design as a framework to compare public incentives for innovation in firms through time and across countries, and consequently to compare forms of policy alignment of innovation objectives in an economy. Using data on 149 French and British policy programmes from the early 1980s to 2002, this paper shows that policy-makers implement programmes within a different three-dimensional design space in order to align several distinctive objectives and consequently strengthen the impact of governmental measures. Moreover, as the objectives of the national players and policy-makers evolved, the portfolio of innovation policies also evolved in their separate ways. Nevertheless, some similar trends are also observed.     

The assessment of minority students: Are adaptive behavior scales the answer?

The use of adaptive behavior scales in the assessment of minority children was discussed. Postive and negative characteristics of the scales developed by Mercer and Lambert were identified and discussed. Recommendations included cautions for the use of such scales in the evaluation of culturally different minority children.