Interviews with deaf children about their experiences using cochlear implants

Within the framework of a longitudinal study of deaf children with cochlear implants, 11 children with implants were interviewed. The objective was to shed light on what it is like for a child to use a cochlear implant, based on these children's own experience with implants, which ranged from 5.0 to 7.5 years. Six of the children were in schools for the deaf, five in regular classes. All but one used an implant daily. The children appreciated that an implant enabled them to perceive sounds in the environment. Some of the children in regular classes could take part in one-to-one conversations with teachers but had difficulty following teaching and discussions. This observation was consistent with what the children's parents and teachers had maintained. Peer interaction was said to be best when other children had the use of at least some signs.     

PISA truth effects: the construction of low performance

This article seeks to unpack the taken-for-granted notion of low performance, arguing that performance and competency are not a given categories; rather they are “objects-for-thought” that receive their discursive and material contours through a chain of translations. As suggested previously by Gorur, PISA is analyzed through the lens of Latourian Science and Technology Studies. The arguments in this article are based on an analysis of situations constructed to observe how performance is enacted in socio-material practice, as 15-year-old students collaboratively solve PISA scientific-literacy items. As background a text analysis, concerning how scientific literacy and performance are discursively constructed in various PISA materials, is reported. We suggest the notion of ‘competency’ be linked to the historical event of trying to start to detect it and argue that PISA results are products of the situated adjustments that are enacted by students and items created in the very moments of scientific measurement.     

Students' understanding of molecular structure representations

The purpose of the investigation was to determine the meanings attached by students to the different kinds of molecular structure representations used in chemistry teaching. The students (n = 124) were from primary (aged 13-14 years) and secondary (aged 17-18 years) schools and a university (aged 21-25 years). A computerised 'Chemical Visualisation Test' was developed and applied. The research indicates that students' appreciation of three-dimensional molecular structures differs according to the kind of representation used. The best results were achieved with the use of concrete, and pseudo-concrete types of representations (e.g. three-dimensional models, their photographs, computer-generated models). However, the use of more abstract types (e.g. schematic representations, stereochemical formula) was less effective. A correlation between students' results on the Chemical Visualisation Test and their educational level, spatial visualisation, and spatial relations skills was shown statistically, but no statistically significant gender differences were observed.     

Elementary Teachers' Classroom Practices and Beliefs in Relation to US Science Education Reform: Reflections from within

This study unveils the stories of 3 public school elementary teachers from the USA who reflected on their beliefs about science education reform, and implementation of the reform in their classroom teaching, in response to state recommendations for change in science education. The teachers' stories show how various factors assisted or impeded the implementations of reform in their teaching, the various challenges related to their grade-level teaching, and the teachers' personal struggles to make sense of reform recommendations. Within each case study, we describe 4 common themes from the teachers' interviews. These themes are related to teachers' science teaching strategies, their science teaching efficacy beliefs about adopting reform, the types of science learning outcomes teachers target, and the types of teaching resources available to them. Implications for teacher education and practice are discussed in relationship with study findings.     

Teachers’ Experience of Working with Socio-scientific Issues: A Large Scale and in Depth Study

The research is an investigation of teachers’ experience of working with socio-scientific issues (SSI). A large group of teachers (55) chose one of six cases with the characteristics of SSI and were free to organize the work as they found appropriate. The research focuses on how teachers chose content, organized their work and experienced the students’ interest and learning. The teachers answered a questionnaire after working with the cases and seven of them were interviewed to provide in-depth understanding of issues raised in the questionnaire. The teachers found the SSI to be current topics with interesting content and relevant tasks and they felt confident about the work. They were quite content with the students’ learning of scientific facts, how to apply scientific knowledge and to search for information. However, they found that the students did not easily formulate questions, critically examine arguments or use media to obtain information about the task. The interviewed teachers did not find this work new, but they organized it as ‘a special event’. They understood SSI work as ‘free’ work and group work was frequent, but only a few of the teachers developed explicit strategies for teaching SSI. They had different ideas about learning but they all talked about knowledge as a set of facts to be taken in by the students. They all included elements of SSI but mostly to introduce the regular science content. However the teachers started to reflect upon the potential of using SSI to cover more goals in the curriculum.     

Research Experiences for Teachers (RET): Motivation, Expectations, and Changes to Teaching Practices due to Professional Program Involvement

This study investigated teachers’ motivation, expectations, and changes to teaching practices due to a 6 week summer professional development program involvement. Participants (n = 67) attended the Research Experiences for Teachers (RET) program within a major university in southeast. Surveys and interviews were used to collect data to answer the following research questions: (1) Who attends the RET program? (2) In what ways do elementary teachers differ from middle/secondary teachers with respect to their motivation for attending the RET program and their expectations about the program? (3) In what ways do elementary teachers differ from middle/secondary teachers with respect to implementing changes to their teaching practices due to RET program attendance? Survey results indicated significant differences between elementary teachers and secondary education teachers with respect to their expectations about the program, and changes to their teaching practices. Interview results provided support to survey findings. Implications for professional development and science teacher education are discussed in relationship with the current study findings.     

Book Reviews

The present study explored the relationships of preservice teachers’ levels of commitment to teaching and their beliefs and perceptions of teaching as a career. Participants were undergraduate students enrolled in a teacher education program at a major university in the southeast. Sixty‐seven preservice teachers completed a survey in which they rated the importance of 20 factors for influencing their choice of career. Additionally, among the survey respondents, nine students were selected from three groups of preservice teachers for in‐depth interviews: (1) students who were currently considering teaching as a career choice, (2) students who were undecided about their future teaching career, and (3) students who were no longer considering teaching as a career. Overall, findings from this study revealed that preservice teachers’ understanding of their goal of becoming teachers and interpretations of their motivation for teaching were unique, yet the types of influences on their career choices were similar across participants’ stories.     

Two Dimensions of Student Ownership of Learning During Small-Group Work in Physics

The theoretical framework student ownership of learning is developed both theoretically and with qualitative research. The metaphor “ownership” is related to the process towards meaning making and understanding and is seen as relevant especially to improve physics instruction. The dimension group ownership of learning refers to the groups’ actions of choice and control of the management of the task; how the task is determined, performed and finally reported. The other dimension, the individual student ownership of learning, refers to an individual student’s own question/idea that comes from own experiences, interests or anomalies of understanding; an idea/question that comes back several times and leads to new insights. From literature and from our own data, we have developed categories for group and individual student ownership of learning, which were iteratively sharpened in order to identify ownership in the two dimensions. As a consequence, we argue for use of the framework student ownership of learning as a way to identify an optimal level of ownership for better learning and higher motivation in physics teaching.     

Reevaluation of von Willebrand disease diagnosis in a Croatian paediatric cohort combining bleeding scores,phenotypic laboratory assays and next generation sequencing: a pilot study

IntroductionThis study reevaluated von Willebrand disease (vWD) diagnosis in a Croatian paediatric cohort by combining bleeding scores (BS), phenotypic laboratory testing, and next-generation sequencing (NGS).Materials and methodsA total of 25 children (11 males and 14 females, median age 10 years, from 2 to 17) previously diagnosed with vWD were included. BS were calculated using an online bleeding assessment tool. Phenotypic laboratory analyses included platelet count, platelet function analyser closure times, prothrombin time, activated partial thromboplastin time, von Willebrand factor antigen (vWF:Ag), vWF gain-of-function mutant glycoprotein Ib binding activity (vWF:GPIbM), vWF collagen binding activity (vWF:CBA), factor VIII activity (FVIII:C) and multimeric analysis. Next-generation sequencing covered regions of both vWF and FVIII genes and was performed on MiSeq (Illumina, San Diego, USA).ResultsDisease-associated variants identified in 15 patients comprised 11 distinct heterozygous vWF gene variants in 13 patients and one novel FVIII gene variant (p.Glu2085Lys) in two male siblings. Four vWF variants were novel (p.Gln499Pro, p.Asp1277Tyr, p.Asp1277His, p.Lys1491Glu). Three patients without distinctive variants had vWF:GPIbM between 30 and 50%. Patients with identified vWF gene variants had statistically significant lower values of vWF:GPIbM (P = 0.002), vWF:Ag (P = 0.007), vWF:CBA (P < 0.001) and FVIII:C (P = 0.002), compared to those without. Correlations between BS and phenotypic laboratory test results were not statistically significant for either of the tests.ConclusionThe applied diagnostic approach confirmed the diagnosis of vWD in 13 patients and mild haemophilia A in two. Limited utility of BS in the paediatric population was evidenced.