Transformation and contextualisation: conceptualising students’ conceptual understandings of threshold concepts in calculus

Research on student learning in higher education suggests that threshold concepts within various disciplines have the capacity to transform students’ understanding. The present study explores students’ understanding in relation to particular threshold concepts in mathematics—integral and limit—and tries to clarify in what sense developing an understanding of those threshold concepts involves a transformation of understanding in relation to ways of thinking in mathematics. Drawing on data collected in interviews with students taking a basic course on calculus the analysis offers an initial characterisation of students’ understandings as algorithmic. It then proceeds to construct a more fine-grained theoretical account for how these understandings develop in the course of the interview, suggesting that the transformative aspects of threshold concepts may be conceptualised in terms of shifts in students’ contextualisations allowing the development of conceptions at different levels of abstraction simultaneously interacting to shape students’ awareness of the ways of thinking and practising in the subject.     

Intercultural learning in English as foreign language instruction: The importance of teachers’ intercultural experience and the usefulness of precise instructional directives

The development of intercultural competence, especially in foreign language instruction, is considered a key goal of teaching in German schools. The present article sheds light on the teaching of intercultural topics in the context of English as a foreign language (EFL). It presents the results of an analysis of data from a larger study (DESI study – Assessment of Student Achievements in German and English as a Foreign Language) bringing the intercultural experience of teachers and observable aspects of instruction into focus. Videotapes of EFL-classroom instruction of 9th and 10th grade students are analyzed in order to assess characteristic of the implementation of intercultural topics. The study reveals the impact of teachers’ intercultural experience on the quality of their intercultural instruction. Furthermore, the results indicate that precise external directives for particular lessons can help teachers put intercultural topics into practice.     

Acculturative stress in Latino Immigrants: The impact of social, socio-psychological and migration-related factors

The purpose of this study was to investigate factors that predict acculturative stress in a nationally representative sample of Latino migrants. The participants in this study were 2059 Latinos. Among them were 868 Mexicans, 577 Cubans and 614 other Latinos. The subcategory other Latinos consisted of immigrants and refugees from Colombia, the Dominican Republic, El Salvador, Ecuador, Guatemala, Honduras, Peru and Nicaragua. The participants took part in face-to-face interviews, which were conducted with computer-assisted interviewing software in Spanish and English. Findings revealed that acculturative stress decreases with an increase in the English proficiency index, the context of migration exit index, and the social network index. Furthermore, acculturative stress was lower for US citizens versus non-citizens; immigrants who wanted to migrate to the US versus refugees who had to leave their country of origin; and later generation immigrants. Acculturative stress increases with a higher native language proficiency index and a higher discrimination index.     

An international collaborative investigation of beginning seventh grade students' understandings of scientific inquiry: Establishing a baseline

Although understandings of scientific inquiry (as opposed to conducting inquiry) are included in science education reform documents around the world, little is known about what students have learned about inquiry during their elementary school years. This is partially due to the lack of any assessment instrument to measure understandings about scientific inquiry. However, a valid and reliable assessment has recently been developed and published, Views About Scientific Inquiry (VASI; Lederman et al. [2014], Journal of Research in Science Teaching, 51, 65–83). The purpose of this large-scale international project was to collect the first baseline data on what beginning middle school students have learned about scientific inquiry during their elementary school years. Eighteen countries/regions spanning six continents including 2,634 students participated in the study. The participating countries/regions were: Australia, Brazil, Chile, Egypt, England, Finland, France, Germany, Israel, Mainland China, New Zealand, Nigeria, South Africa, Spain, Sweden, Taiwan, Turkey, and the United States. In many countries, science is not formally taught until middle school, which is the rationale for choosing seventh grade students for this investigation. This baseline data will simultaneously provide information on what, if anything, students learn about inquiry in elementary school, as well as their beginning knowledge as they enter secondary school. It is important to note that collecting data from all of the approximately 200 countries globally was not humanly possible, and it was also not possible to collect data from every region of each country. The results overwhelmingly show that students around the world at the beginning of grade seven have very little understandings about scientific inquiry. Some countries do show reasonable understandings in certain aspects but the overall picture of understandings of scientific inquiry is not what is hoped for after completing 6 years of elementary education in any country.     

Reading Strategies in Children with Cerebral Visual Impairment caused by Periventricular Leukomalacia

Four children with cerebral visual impairment caused by periventricular leukomalacia were followed in an ethnographic clinical case study for two years during their process of learning to read in mainstream classes. When compared to children with ocular visual impairment, children with cerebral visual impairment often exhibit an uneven cognitive profile with visuo-spatial deficits but good verbal capacities. One main problem for children with deficits due to periventricular leukomalacia is decreased visual acuity with crowding, that is, an inability to identify symbols in a line, while single symbols of the same size may be identified. A question addressed in the study is what kind of strategies does the child with "crowding" problems develop in reading long words in print. Could Braille, as a sequential reading medium, be an alternative for the child with simultaneous visual problems? Two children were offered both Braille and print reading as reading media, one of whom preferred Braille after two years of training. The other two children read ordinary print without any special teaching. After two years, considerable differences in reading acquisition and reading strategies could be detected among the four children. No single factor seemed to account for the differences. Individual factors as well as teaching methods could be reasons for the differences.     

Strengths and Weaknesses of Non-enhanced and Contrast-enhanced Cadaver Computed Tomography Scans in the Teaching of Gross Anatomy in an Integrated Curriculum

Cadaver-specific postmortem computed tomography (PMCT) has become an integral part in anatomy teaching at several universities. Recently, the feasibility of contrast-enhanced (CE)-PMCT has been demonstrated. The purpose of this study was to identify particular strengths and weaknesses of both non-enhanced and contrast-enhanced PMCT compared to conventional cadaver dissection. First, the students’ perception of the learning effectiveness of the three different modalities have been assessed using a 34-item survey (five-point Likert scale) covering all anatomy course modules. Results were compared using the nonparametric Friedman Test. Second, the most frequent artifacts in cadaver CT scans, were systematically analyzed in 122 PMCT and 31 CE-PMCT data sets to quantify method-related limitations and characteristics. Perfusion quality was assessed in 57 vascular segments (38 arterial and 19 venous). The survey was answered by n = 257/320 (80.3%) students. Increased learning benefits of PMCT/ CE-PMCT compared to cadaver dissection were found in osteology (2/3 categories, P < 0.001), head and neck (2/5 categories, P < 0.01), and brain anatomy (3/3 categories, P < 0.01). Contrast-enhanced-PMCT was perceived particularly useful in learning vascular anatomy (10/10 categories, P < 0.01). Cadaver dissection received significantly higher scores compared to PMCT and CE-PMCT in all categories of the abdomen and thorax (7/7 categories, P < 0.001), as well as the majority of muscular anatomy (5/6 categories, P < 0.001). Frequent postmortem artifacts (total n = 28, native-phase n = 21, contrast injection-related n = 7) were identified and assessed. The results of this work contribute to the understanding of the value of integrating cadaver-specific PMCT in anatomy teaching.     

Quality criteria for conceptual technology integration models in education: bridging research and practice

Educational technology research and development - In order to effectively use technology in education, appropriate conceptual understandings are needed to guide the integration process. Today,...     

Qualitative sampling in research on international student mobility: insights from the field in Germany1

ABSTRACT

Although over the past decades the numbers of studies investigating international student mobility and migration (ISM) increased, methodological challenges in empirical research on the topic have remained mainly unaddressed. This is particularly the case for sampling, which is a crucial but often less considered part of qualitative research designs. In this article, we identify three main challenges in qualitative sampling for research into ISM: time, space and international students’ heterogeneities. In addressing those challenges, we theoretically discuss their implications and give empirical examples drawing on our research experiences. We argue for a more reflexive research procedure in studying educational mobility.     

Enacting the role of special needs educator – six Swedish case studies

With the increasing focus on inclusion, special needs educators (SNEs) are now expected to share responsibility for pupils with teacher colleagues and to lead school development, but it is a challenge to enact this role in schools. The aim of the study was to explore how professional roles of Swedish SNEs are enacted in local school contexts. From a survey of SNEs in 10 Swedish municipalities, six participants whose work tasks were expected to correspond to the degree ordinances for their university training were chosen. The participants were followed at work, and data were collected through observation of the participants at work, participants’ diaries and interviews with the participants, their teacher colleagues and their school principals. The analysis involved both quantitative and qualitative methods. First, based on the researchers’ observations of the participants at work, categories of SNEs’ tasks were discerned, and the amount of time devoted to those categories of tasks was summarised. Second, case study narratives of the SNEs’ work were constructed to describe how the participants, their teacher colleagues and their school principals view the SNE role and to describe how the work is enacted in various school contexts. The results revealed seven categories of work tasks practised to varying degrees by the six SNEs. The case study narratives exposed large variation in how the SNEs conceptualised their role and how it evolved in relation to local school contexts. The results of the study are discussed with regard to the role of the SNE in relation to policies of inclusion.