Science Teacher Education in Brazil: 1950–2000

This paper analyzes the most significant events occurring in Brazil’s educational, social and political areas over the last half century, viewed against a background of relevant worldwide events. The hypothesis presented here is that the relations between the country’s educational policies, the demands of the various segments of academia, and the public school system have always been strained. This strain has contributed positively to the evolution of academic knowledge and production, to the design of more modern curricular projects by institutional authorities, and to the initial recognition of the specific construction of school knowledge by the school system itself. However, the interaction of these major institutions lacks a crucial element—one that would lead to an effective change in the education of science teachers and produce a positive impact on Brazil’s schools—namely, the wholehearted participation of science teachers themselves. With this analysis, we intend to contribute by offering some perspectives and proposals for science teacher education in Brazil.     

Soft and hard variables in determining pre‐service teachers' intentions and decisions to pursue a special education career

This study examined the roles of hard variables and soft variables in determining college teachers' intentions to pursue a special education career and education majors' actual decisions to major in special education. This study surveyed 243 college students taking special education courses at a state university, including 213 education majors. The survey questions included four blocks of variables, pertaining to demographics, training and work experience, soft variables (i.e., personal connections to people with disabilities, personal value and commitment and perceived social support) and hard variables (i.e., estimated salary, workload, professional development opportunities and job security). Results suggest that (1) after controlling for other variables, hard factors such as salary did not add significant contributions to college students' intention or education majors' actual action to pursue a special education career; (2) soft variables, such as value, commitment to special education and perceived social support, significantly predicted college students' intention to pursue a special education career, but did not significantly influence education majors' actual decision to choose a special education program, and (3) workloads significantly affect education majors' decisions making decisions of enrolling in a special education program. Implications are discussed about the importance of enhancing soft‐variable aspects of working conditions for special education recruitment and retention.     

What actually works to enhance graduate employability? The relative value of curricular,co-curricular,and extra-curricular learning and paid work

Higher Education - The focus on short-term graduate employment metrics has catalysed the employability agenda as a strategic directive in universities. A raft of embedded, co-curricular, and...     

The role of feedback in the under-attainment of ethnic minority students: evidence from distance education

In UK higher education, the attainment of ethnic minority students is lower than that of white students, and this remains the case when differences in entry qualifications have been taken into account. The present study investigated whether the under-attainment of ethnic minority students might be due to the nature of the feedback that they received for their assignments. The assignments submitted by 470 ethnic minority and 470 matched white students taking a distance-learning course were compared using a computer system, Open Mentor, to categorise the feedback given by tutors based on a scheme devised by Bales. Asian and black students and students of mixed ethnicity obtained lower marks for their assignments than did the white students. However, there were only small differences between the ethnic minority students and the white students in terms of the pattern of feedback that they received, and these disappeared when the marks that they had received for their assignments had been taken into account. It is concluded that students from all ethnic groups received feedback that was commensurate with their marks, and that the origins of the attainment gap in ethnic minority students in UK higher education must be sought elsewhere.     

An Empirical Examination of the IRT Information of Polytomously Scored Reading Items Under the Generalized Partial Credit Model

Using Muraki's (1992) generalized partial credit IRT model, polytomous items (responses to which can be scored as ordered categories) from the 1991 field test of the NAEP Reading Assessment were calibrated simultaneously with multiple-choice and short open-ended items. Expected information of each type of item was computed. On average, four-category polytomous items yielded 2.1 to 3.1 times as much IRT information as dichotomous items. These results provide limited support for the ad hoc rule of weighting k-category polytomous items the same as k - 1 dichotomous items for computing total scores. Polytomous items provided the most information about examinees of moderately high proficiency; the information function peaked at 1.0 to 1.5, and the population distribution mean was 0. When scored dichotomously, information in polytomous items sharply decreased, but they still provided more expected information than did the other response formats. For reference, a derivation of the information function for the generalized partial credit model is included.     

Business graduate employability – where are we going wrong?

Persistent gaps in certain non-technical skills in business graduates continue to impact on organisational performance and global competitiveness. Despite business schools' best efforts in developing non-technical skills, widely acknowledged as fundamental to graduate employability, there has been considerably less attention to measuring skill outcomes and even less on their subsequent transfer to the workplace. It appears stakeholders are assuming transfer occurs automatically in graduates, neglecting the influence of learning program, learner and workplace characteristics on this complex process and its potential impact on graduate employability. This paper unpacks the concept of transfer and proposes a model of graduate employability that incorporates the process. Measures for empirical analysis are discussed. Testing the model would indicate the extent to which transfer occurs and highlight collaborative strategies for employers, universities and graduates in nurturing learning and workplace environments in which transfer may flourish, taking us one step closer to the elusive ‘work-ready’ graduate.     

A typology of undergraduate students' conceptions of size and scale: Identifying and characterizing conceptual variation

The importance of “size and scale” in nanoscience and engineering has been recognized by both scientists and science educators. A solid understanding of this concept is key to the learning of nanoscience. Students, however, have been reported to have considerable difficulty grasping this concept; yet little is known regarding their state of understanding. To address this knowledge gap, we conducted a series of studies that were aimed at exploring the different ways students conceive of “size and scale” in the context of undergraduate nanoscience and engineering courses. Informed by Variation Theory of Learning (Marton and Booth, 1997), we identified four major categories (with two sub‐categories within each) of student conception—fragmented, linear, proportional, and logarithmic. These conception categories, together with the aspects of variation that characterize and distinguish them, are summarized in a typology. In addition to serving as a diagnostic tool to describe students' understanding, this typology can also be used to guide the development of instructional interventions that facilitate students to move toward a more sophisticated understanding of “size and scale.” © 2011 Wiley Periodicals, Inc., Inc. J Res Sci Teach 48: 512–533, 2011     

A study of technical signs in science: implications for lexical database development

Both classroom instruction and lexical database development stand to benefit from applied research on sign language, which takes into consideration American Sign Language rules, pedagogical issues, and teacher characteristics. In this study of technical science signs, teachers' experience with signing and, especially, knowledge of content, were found to be essential for the identification of signs appropriate for instruction. The results of this study also indicate a need for a systematic approach to examine both sign selection and its impact on learning by deaf students. Recommendations are made for the development of lexical databases and areas of research for optimizing the use of sign language in instruction.     

Relating Preschool Quality to Children’s Literacy Development

Preschool classrooms were investigated to determine the extent to which quality is related to children’s literacy development. The study included 24 classrooms of 428 prekindergarten children in a large, urban Midwestern school district. Results suggest that global classroom quality and literacy environment quality are strongly related. Literacy environment quality and children’s literacy abilities are also related. Differences in classroom quality were found to have an impact on children’s literacy scores—the higher the quality, the higher the scores. This article also describes lessons learned from the investigation and provides suggestions for teachers and administrators for improving quality to enhance literacy development.