Capillary flow in sacrificially etched nanochannels

Planar nanochannels are fabricated using sacrificial etching technology with sacrificial cores consisting of aluminum, chromium, and germanium, with heights ranging from 18 to 98 nm. Transient filling via capillary action is compared against the Washburn equation [E. W. Washburn, Phys. Rev. 17, 273 (1921)], showing experimental filling speeds significantly lower than classical continuum theory predicts. Departure from theory is expressed in terms of a varying dynamic contact angle, reaching values as high as 83° in channels with heights of 18 nm. The dynamic contact angle varies significantly from the macroscopic contact angle and increases with decreasing channel dimensions.     

Evaluate to Improve Learning: Reflecting on the role of teaching and learning models

Focusing attention on models of teaching and learning during design and development phases can become the key to integrating evaluation in a teaching development project. This article reflects on an experience in planning and conducting an evaluation of a prototype of a new technology-based teaching initiative. The learning experiences designed as part of the prototype were explicitly built on a model of teaching and learning. This had implications for evaluation not recognised in many evaluation manuals. Aligning evaluation to a model of teaching and learning is revealed to be complex in the sense that an initial model needs to be interpreted and extended to include reference to underlying epistemological assumptions. Yet aligning evaluation with an extended model of teaching and learning simplifies and assists the process of evaluation including the choice of methods, analysis of the data and determining improvements. It directly links evaluation to design and development.     

Piloting a dispersed and inter-professional Lesson Study using technology to link team members at a distance

This article presents an evaluation of distance technology used in a novel Lesson Study (LS) approach involving a dispersed LS team for inter-professional purposes. A typical LS model with only school teachers as team members was modified by including university-based lecturers with the school-based teachers, using video-conferencing and online video sharing. The aim was to examine the experiences of using video-conferencing and video transfer technology to support the use of LS procedures to connect team members between schools and university. The meetings from two LS teams (primary and secondary) were recorded and analysed using a discourse analysis framework, and team members were interviewed after the LS cycle. Despite some technical difficulties, the communication between the dispersed members of the teams was largely smooth and successful. Extending LS teams and practice to include non school teachers, using distance-linking technology, can more effectively support teachers, while reducing the practical constraints of bringing other professionals into the LS team.     

The use and misuse of pleasure in sex education curricula

Since Michelle Fine's writing on the missing discourse of desire in sex education, there has been considerable prompting among sexuality educators and feminist scholars to incorporate talk of pleasure into sex education curricula. While the calls for inclusion continue, few have actually examined the curricula for a pleasure discourse or explored how it is contextualised within sex education curricula. In this paper, we analysed curricula used in the USA in the past decade. A qualitative thematic analysis revealed that the discourse around pleasurable sex was often linked to a range of dangerous or negative outcomes including not using condoms, rushing into sex without thinking, regretted sex, and pregnancy or STDs. When the discourse around pleasure was included in sections on ‘knowing one's body’, this discourse took a medicalised, scientific tone. Pleasurable sex was also presented in more positive ways, either linked to marriage in Abstinence Only Until Marriage curricula, or within a more feminist discourse about female pleasure in comprehensive sex education curricula. Our research indicates that a discourse of desire is not missing, but that this discourse was often situated as part of a discourse on safe practice and there, continues to equate pleasure with danger.     

Recognising the needs of gender-variant children and their parents

Gender variance confronts widely held assumptions that children born as males will act like ‘boys’ and children born as females will act like ‘girls’. This imposed binary has the effect of perpetuating negativity towards people who express themselves with gendered variations in attire, behaviour or preferences. Despite the existence of gender-variant individuals in every culture and throughout time, many people are unaware that diversity in gender expression and sexual formation is a naturally occurring phenomenon. This qualitative study aimed to establish the needs of gender-variant children and their parents in order to inform education programmes, policies and clinical approaches to gender variance. Three Internet surveys were conducted to explore the experiences of parents raising gender-variant children, the childhood experiences of transgender adults and the views of professionals who work with the transgender community. The needs of gender-variant children emerged in terms of the need for information, peer contact, personal gender expression, safety, and to be heard and accepted by their parents. The most common needs for parents were for information (stories from other parents, research and guidelines; peer support) and educational resources for schools, professionals and local communities. The paper provides comparisons between the three participant groups and recommendations for future research.     

The Implementation and Evaluation of a Computer Simulation Game in a University Course

The purpose of this study was to implement a computer simulation game in a university course and to assess its value as an educational technique. College students (N = 200) were randomly assigned to a treatment or delayed treatment group. Lecture plus a computer simulation game was compared to lecture alone on a broad range of measures (attitudinal, attendance, achievement, information-seeking behavior). Students who participated in the game earlier in the semester responded more favorably than those who participated later in the semester, p = .02. Furthermore, students attended more during the earlier part of the course than in the later, p < .01. Students performed better on the final exam than on the second exam, p < .01. No students displayed information-seeking behavior. An implication of the results is that early implementation provides a more positive response to computer simulations.