Latin American immigrant women and intergenerational sex education

People of Latin American descent make up the largest and fastest-growing minority group in the USA. Rates of pregnancy, childbirth, and sexually transmitted infections among people of Latin American descent are higher than among other ethnic groups. This paper builds on research that suggests that among families of Latin American descent, mothers have a particularly strong influence on the sexual attitudes and behaviours of their children, yet that parents of Latin American descent communicate less with their children about sex than parents of other ethnic groups. It examines the messages about sex women received as children in their countries of origin, and how these messages and their views of the USA influence the sexual education women provide for their children. On the basis of data from focus groups, we suggest that, in spite of the persistence of sexual silence, some women's self-reflective analyses of their own sexual education as well as their views of the USA as a sexually more open society contribute to their views of silence as dangerous and trigger more open communication with sons and daughters. Mothers hope to break the cycle of unwanted pregnancy by speaking with daughters about the consequences of menstruation and with sons about contraception.     

DNA as a Work of Art: Processes of Semiosis between Contemporary Art and Biology

When A Genomic Portrait – Sir John Sulston by Mark Quinn appeared in the London National Portrait Gallery's exhibition in 2001/2, the ensuing public controversy over its portrayal raised a number of questions about the representation of a publicly known figure. Because the portrait was the Gallery's first contemporary commission using specialised, scientific procedures in its creation, a number of issues arose surrounding its authenticity. How questions of authenticity are answered depends upon how the viewer reads aspects of scientific coding as it functions within the artistic domain. This is a form of visual literacy that depends on the viewer's ability to lift the veil that operates between coding systems and the context of their use. Literacy in this case is built upon the relationship between visual interpretation and ascribed systems of meaning within the context of their recontextualisations. By playing with the intersections between artistic and scientific discourses, the authors investigate how the representation of identity functions as a polysemy across different semiotic domains. Using visual semiotics to examine the intersections between sign systems across these domains, some of the communication aspects of how new modes of art function in present‐day communities are provoked. By illustrating the complexity of this process as a part of transforming expert knowing into pedagogical practice, support is given for improving teacher education in the arts and cultural domain.     

Changing literacies,changing formations: the role of elicitation in teacher action research with new technologies

As new technologies promise to be an enduring feature of the landscape of teachers’ work, we consider how teachers implicitly bring stories forward into their classroom explorations with new media as a part of their ‘informal learning’. By ‘stories’ is meant specific classroom texts as well as preferred teacher practices with those texts. The article represents a reflection on the methodological role that ‘elicitation’ can play in drawing out teacher thinking during a time of professional change, thinking that would otherwise likely remain embedded, particularly when teachers’ attention is focused forward on innovation in practice. The methodological use of ‘elicitation’ emerged in the first year of an ongoing teacher action research study, in which seven teachers have been involved in a professional development initiative that actively engages teachers in examining changing literacy formations, beginning with the teachers’ own literacy formations. The methodological practice of elicitation borrows from phenomenology, ethnomethodology, narrative research, reader response theories, curriculum theory and psychoanalysis, and emerged as a way to acknowledge the life histories that teachers were bringing to their professional development with new media. We suggest that elicitation can potentially draw out deep and sustaining sources of a teacher’s commitment, as well as resistance, to change. It can help disclose the tensions between commitment and resistance that even teachers who voluntarily undertake to incorporate new technologies into their practice may experience. Within a teacher action research framework, elicitation can also serve to remind teachers (and others) of the value of what they know and are learning, thus contributing to teachers developing a ‘scholarship of practice’ in response to any actual or perceived ‘intensification’ of their work.     

A One-year Case Study: Understanding the Rich Potential of Project-based Learning in a Virtual Reality Class for High School Students

This paper presents a qualitative case analysis of a new and unique, high school, student-directed, project-based learning (PBL), virtual reality (VR) class. In order to create projects, students learned, on an independent basis, how to program an industrial-level VR machine. A constraint was that students were required to produce at least one educational application of VR. This study incorporated in-depth classroom observations, interviews with students, analyses of student projects, and surveys of parents and teachers to examine the social and learning processes in the class, and the nature of content learning represented in student projects. The results demonstrated that PBL can be effective even with minimal teacher guidance. The findings substantiate an educational approach rich with promise, for at least some students, that deserves considerable additional study to maximize its powerful potentials for independent and peer-mentored learning.     

Examining the Validity of Standards-Based Assessments for Initially Fluent Students and Former English Language Learners

To date, assessment validity research on non-native English speaking students in the United States has focused exclusively on those who are presently English language learners (ELLs). However, little, if any, research has been conducted on two other sizable groups of language minority students: (a) bilingual or multilingual students who were already English proficient when they entered the school system (IFEPs), and (b) former English language learners, those students who were once classified as ELLs but are now reclassified as being English proficient (RFEPs). This study investigated the validity of several standards-based assessments in mathematics and science for these two student groups and found a very high degree of score comparability, when compared with native English speakers, for the IFEPs, whereas a moderate to high degree of score comparability was observed for the RFEPs. Thus, test scores for these two groups on the assessments we studied appear to be valid indicators of their content knowledge, to a degree similar to that of native English speakers.     

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.     

Cognitive attainment in online learning environments: matching cognitive and technological presence

To know whether students' achievements are the result of online interaction and not just a consequence of individual differences themselves, it seems essential to link the cognitive results to the students' online behavior (technological presence). In technological presence, interaction is based on the degree in which the online student senses the availability of, and connectedness with, other students, the teacher, and the context. Cognitive presence as a part of the interaction process of teaching and learning reflects the level of accomplishment in online learning environments (cognitive attainment). The purpose of this article is to show some evidence of the mutual influence of the students' technological behaviors and the students' cognitive factors in online learning environments – including teacher and instructional design factors. Two thousand one-hundred thirty written computer-mediated communications from 88 participants in four prototypical online learning activities have been analyzed for this purpose. The analysis shows the influence of technological presence on the quality of learning results of the online knowledge construction process. The conclusions point out the importance of considering technological presence as a new and complementary type of presence as it provides relevant information for instructional and technological design.     

Medical teachers' professional development – perceived barriers and opportunities

This paper explores medical teachers' perceived barriers and opportunities for educational and professional development. Data has been gathered through 19 semi-structured interviews with participants on a staff development course 1 year after their participation. The analysis shows that most perceived barriers are found on an organisational level, whilst motivation for development is found on an individual level and often related to the notion of teaching as a ‘private business’. However, what some respondents perceive as barriers are by others seen as opportunities. Some of these differences in perception may be explained by self-efficacy beliefs.     

Granite desalination using electromigration. Influence of type of granite and saline contaminant

We describe the results of electromigration desalination of two soluble salt-contaminated Galician granites. The efficacy of electromigration, which had not been previously applied to granite, was assessed for two types of granite contaminated with a 20% NaCl solution and seawater. Desalination effectiveness was evaluated as follows: (1) analysis of anode and cathode ion content during testing; (2) analysis of ions at different distances from the electrodes after testing; (3) pH assessment of the stone surfaces; and (4) evaluation of colour changes. Results were very satisfactory; by the end of testing, chloride was reduced by almost 100% in both the NaCl and seawater contaminated samples. Sulfate reduction was also significant, despite this ion's lower mobility. The granite pH values remained close to neutral and colour changes were minimal. The difference in effectiveness of the process for the two types of stone was associated with their dissimilar pore structure.