Explanations in STEM Areas: an Analysis of Representations Through Language in Teacher Education

Constructing explanations of scientific concepts is one of the most frequent strategies used in the science classroom and is a high-leverage teaching practice. This study analysed the explanations provided by student teachers in STEM areas from a socio-materiality perspective focused on verbal and nonverbal language and representations. The study was conducted in a hybrid research format by scholars and a preservice teacher. First, the study compared the representational elements used by 86 student teachers to construct explanations about various concepts in a roleplay setting. Next, a positioning analysis was done by a preservice teacher, to a selection of five of these explanations focused on the concept of “force”. The positioning analysis highlighted the embedded voices in the construction of explanations, with a focus on the intersection between science and language. The results showed that the student teachers created explanations as static artefacts, mainly using examples, graphs and images to clarify the concepts. The voices of learners and scientists were mostly absent from the explanations, which led to the presentation of explanations in STEM areas as finished and unquestionable artefacts, with references neither to nature nor to the history of science. We reflect on the meanings attributed to learning to be a practitioner in the context of interconnecting science and language through explanations, as a process of meaning (re)production within the classroom. Implications for teacher education are discussed in order to enhance student teachers’ awareness about constructing knowledge by enacting explanations in the science classroom.

     

EditorialKeeping information centre stage amid changing scenery

With conference season upon us, consideration is given to the importance of subject‐specific and library association conferences. The biennial Health Libraries Group (HLG) conference meets both these criteria and takes place in Greater Manchester in July. The conference provides an opportunity for peer‐to‐peer learning, identifying new trends and professional rejuvenation. An open invitation is given to attend the Health Information and Libraries Journal‘Writing for Publication’ workshop at the HLG conference. An overview of three bursaries available from the Health Libraries Group and Library and Information Research, both groups of the UK Chartered Institute of Library and Information Professionals (CILIP) is provided. The bursaries offer opportunities to cover the costs of registration and travel expenses to national and international conference.     

‘I’m older but I can still do this job’: the experiences of mature women in an age-sensitive occupation

This paper explores how mature female flight attendants [FAs] use Selection, Optimization and Compensation [SOC] strategies to cope with age-related diminishing resources at work. The role of FAs is an age-sensitive occupation, and in some organizations, women are under constant pressure to look young and attractive. This Interpretative Phenomenological Analysis study aims to add depth and nuance to our understanding of SOC strategies qualitatively; most published studies are quantitative. A homogenous sample of 5 mature single Filipina FAs, foreign workers employed by Arabian Gulf-based airlines, were interviewed through a semi-structured protocol. Recruitment was through a snowball process. The study found that FAs use SOC strategies to compensate for age-related decline. Off-duty, their focus is directed to activities that help them to meet the organizations’ expectations of youthful appearance and productivity. To achieve this, resources from other life domains are diverted, which leads to negative outcomes from focusing SOC strategies on only one aspect of life. Despite negative personal implications and concerns about the future, the participants still felt attached to their work identities. This shows the importance of understanding the use of SOC strategies within and across life domains, as well as their implications for career sustainability and workability. The use of such strategies at work when detrimental to other life roles is unsustainable. The findings highlight the importance of conducting more qualitative studies on SOC behaviors of specific groups, so the experiences of aging at work can be explored in more depth, allowing areas of concern to be identified.     

Influence of regression model and initial intensity of an incremental test on the relationship between the lactate threshold estimated by the maximal-deviation method and running performance

Abstract

This study investigated the influence of the regression model and initial intensity during an incremental test on the relationship between the lactate threshold estimated by the maximal-deviation method and performance in elite-standard runners. Twenty-three well-trained runners completed a discontinuous incremental running test on a treadmill. Speed started at 9 km · h^?1 and increased by 1.5 km · h^?1 every 4 min until exhaustion, with a minute of recovery for blood collection. Lactate–speed data were fitted by exponential and polynomial models. The lactate threshold was determined for both models, using all the co-ordinates, excluding the first and excluding the first and second points. The exponential lactate threshold was greater than the polynomial equivalent in any co-ordinate condition (P < 0.001). For both models, the lactate threshold was lower when all co-ordinates were used than when the first and the first and second points were excluded (P < 0.001). 10-km race pace was correlated with both the exponential and polynomial lactate thresholds for all the co-ordinate conditions (r ≥ 0.75, P < 0.001 and r ≥ 0.56, P < 0.05, respectively). The results suggest that the exponential lactate threshold should be used instead of the polynomial equivalent since it is more strongly associated with performance and is independent of the initial intensity of the test.     

A theory of self‐perception in preferences for public figures

This content analysis reveals that men and women network news correspondents differed in how they covered 4 presidential elections (1992–2004). There were fewer women than men reporters involved in election coverage, but on average, women reported more stories than men and were tonally tougher watchdogs than men. In terms of framing candidates, male reporters were strongly associated with a masculine approach that emphasized the competitiveness of campaigns. By contrast, women correspondents employed both more feminine and gender-neutral frames than their male colleagues. These findings were interpreted against the backdrop of information derived from in-depth interviews with 5 women reporters who appeared in the sampled content.     

Linguistic Complexity,Schematic Representations,and Differential Item Functioning for English Language Learners in Math Tests

This article examines nonmathematical linguistic complexity as a source of differential item functioning (DIF) in math word problems for English language learners (ELLs). Specifically, this study investigates the relationship between item measures of linguistic complexity, nonlinguistic forms of representation and DIF measures based on item response theory difficulty parameters in a state fourth-grade math test. This study revealed that the greater the item nonmathematical lexical and syntactic complexity, the greater are the differences in difficulty parameter estimates favoring non-ELLs over ELLs. However, the impact of linguistic complexity on DIF is attenuated when items provide nonlinguistic schematic representations that help ELLs make meaning of the text, suggesting that their inclusion could help mitigate the negative effect of increased linguistic complexity in math word problems.     

Conceptions of teaching and educational knowledge requirements

Abstract

This paper scrutinises the educational knowledge requirements of craft, technical, and reflective professional conceptions of teaching, as recently outlined by Winch, Oancea, and Orchard. Drawing on Bernsteinian sociology of knowledge we identify the different requirements each conception makes of educational knowledge, and how it is envisaged that this knowledge will be used in educational practice. While craft conceptions dismiss the value of educational knowledge per se, they nevertheless value other forms of disciplined knowledge. Arguing that technical conceptions of teaching may be either narrowly instrumental or autonomous, we suggest that an advanced technical knowledge base requires a disciplinary aspect, while knowledge for purely instrumental purposes offers a reductive view of educational practice. Moreover, the varying notions of reflection suggested by reflective professional conceptions require certain forms of engagement with educational knowledge, which are challenged by contemporary reforms in teacher education globally. It is suggested that there are often interdependencies between forms of educational knowledge and conceptions of teaching, with potential implications for the trajectories of educational reforms. The argument is briefly illustrated with reference to the national contexts of Germany, England, and Finland.     

Should I use co-assessment in higher education? Pros and cons from teachers and students’ perspectives

Co-assessment is a type of participatory assessment in which the teacher and student jointly discuss, negotiate and assess the student’s task or performance. Although the literature on co-assessment is scarce, some authors highlight the benefits for students of participating in co-assessment in higher education, including learning, improved communication, and greater assessment literacy. This study has a double objective: on the one hand, to analyse the strengths and limitations perceived by students participating in co-assessment practices; on the other hand, to explore the strengths, weaknesses, opportunities and threats perceived by professors participating in the experience. The study was developed in 8 class groups with the participation of 470 students and 4 teachers. The qualitative analysis of the data obtained from the questionnaires and focus groups indicates that the students acknowledged several strengths, among which learning from mistakes was prominent. Students also noted some limitations, particularly the lack of adjusted scoring. Professors offered another perspective that complemented the vision of their students, noting that co-assessment presents opportunities as well as risks that may jeopardise its implementation.