Opening up open-ended mathematics tasks

This discussion has evolved from ideas in Peter Sullivan and Pat Lilburn's Open-Ended Maths Activities; Using 'Good' Questions to Enhance Learning (1997). This is a compilation of open-ended questions, and methods for generating open-ended questions, along with a brief rationale for using such questions. This classroom-oriented teaching resource developed from earlier research and teaching development work by Peter Sullivan and David Clarke, and others. Two methods are offered for constructing a 'good question'.

Professional development online : showcasing good practice to support open, distance and flexible learning

Designing Electronic Learning and Teaching Approaches (DELTA) is an online professional development initiative to support pedagogically-appropriate teaching with technology by showcasing examples of good practice in e-learning. The site aims to increase appreciation of e-learning possibilities for teaching staff through an easy-to-access, just-in-time resource. This paper describes the site and introduces the modular evaluation approach which is being implemented to examine it from different stakeholder perspectives. It then focuses on the first evaluation module which investigates how users perceive and engage with DELTA. The paper provides the initial evaluation findings which will contribute to the ongoing improvement of DELTA as a professional development resource that supports open, distance and flexible learning.

Investigative interviewers' perceptions of the value of different training Tasks on their adherence to open-ended questions with children

Prior research has highlighted the considerable difficulties investigative interviewers have in adhering to open-ended questions in child abuse interviews. Although improvements in interviewing can be achieved by providing training that incorporates multiple practice opportunities and feedback, currently little is known about the way in which these elements are best administered. The current study extends debate and research on this issue by examining the perceptions of 15 trainee interviewers (police as well as social workers) regarding the relative value of various practical training exercises experienced in a recent training program. The findings indicated that although practice in interviewing was deemed essential, not all tasks were perceived to be equally beneficial. The two most favoured exercises were (a) simulated interviews involving trained actors playing the role of the child, and (b) self-evaluation of a transcribed interview using an objective coding protocol. A summary of the participants' perceptions is provided along with a discussion of the implications for trainers and researchers.

Physical environmental conditions, spawning and early-life stages of an estuarine fish : climate change implications for recruitment in intermittently open estuaries

Significant variation in the egg and larval survival and juvenile recruitment of estuarine fishes has been linked to fluctuating environmental conditions. This present study compared the distribution and abundance of black bream (Acanthopagrus butcheri) eggs and yolk-sac larvae between two microtidal estuaries of different flow regimes, where the riverine flow into the Glenelg estuary was around eight times the flow volume into the Hopkins estuary. Samples were collected monthly from September to November at sites along each estuary where vertical profiles of temperature, salinity and dissolved oxygen (DO) were measured, and vertically stratified sampling of black bream eggs and yolk-sac larvae was conducted using a Schindler sampler. Salt wedge formation was apparent in both estuaries, with significant de-oxygenation of deeper, saline waters. Eggs occurred in a wide range of DO levels but yolk-sac larvae were less common at the lowest levels. Most eggs and yolk-sac larvae were collected in salinities greater than 10. Results suggested that egg mortality was higher in the Hopkins than the Glenelg estuary, which may be associated with the hypoxic conditions characteristic of low-flow conditions. The results have significant implications in terms of climate change that is predicted to lead to warmer, drier conditions in south-eastern Australia, potentially increasing stratification and subsequent hypoxic zones.

Clinical risk managment and the ethics of open disclosure : part 2 : implications for the nursing profession

Patient safety experts and other authorities have strongly postulated the open disclosure of errors and adverse events to patients and their nominated support persons as an essential component of effective clinical risk management in health care. Commentators also contend that ‘when things go wrong’, openly disclosing such events to the patient is simply ‘the right thing to do’. Important questions about the ethics of open disclosure remain, however. Is openly disclosing errors and adverse events to patients necessarily ‘the right thing to do’? Do hospital authorities and health care professionals always have an overriding duty to openly communicate with patients and their families when thing go wrong? If patients do not suffer any material harm when a mistake is made, should they or their nominated support persons still be told? Are there overriding moral considerations that might justify non-disclosure in certain circumstances? Despite the obvious importance of these issues and their possible implications for the nursing profession, they have not been comprehensively explored in the nursing literature. An important aim of this article (the second of a two-part discussion) is to contribute to the positive project of redressing this oversight.

Clinical risk management and the ethics of open disclosure : part 1 : benefits and risks to patient safety

Patient safety experts and other authorities have strongly postulated the open disclosure of errors and adverse events to patients as an essential component of effective clinical risk management in health care. Commentators also contend that ‘when things go wrong’, openly disclosing such events to the patient and his or her nominated support person is simply ‘the right thing to do’. Despite the obvious importance of the issue of open disclosure and its possible implications for the nursing profession, it has not been comprehensively addressed in the nursing literature. A key aim of this article (the first of a two-part discussion) is to contribute to the positive project of redressing this oversight by providing a brief overview of what open disclosure is and what its intended purpose, aims, and rationale are. Consideration is also given to the risks and benefits of open disclosure as a public policy and whether it will succeed in achieving the anticipated outcomes envisaged. In a second article (to be presented as Part II), the ethics of open disclosure and its possible implications for the nursing profession are explored.

An examination of the limitations in investigative interviewer's use of open-ended questions

Best-practice guidelines in the area of investigative interviewing of children specify the importance of using open-ended questions. However, use of open-ended questions per se does not maximise interview outcome; open-ended questions can vary markedly in quality. The aim of this study was to identify the nature of investigative interviewers' limitations when using open-ended questions, and to compare how representative these limitations are in three distinct interview paradigms. These interview paradigms include: (a) interviews in which trained actors played the role of a 5-6-year-old child; (b) interviews where 5-6-year-old children recalled an innocuous event that was staged in their school; and (c) actual field interviews where child witnesses aged 5 to 7 years recalled an abusive event. Overall, several common problems that would restrict children's opportunity to provide elaborate and accurate narrative accounts of events were identified and described. Our identification of these problems (using a dichotomous rating scale) was found to be consistent with an independent expert, and their presence was not limited to those interviewers who used a low frequency of open-ended questions. The implications of the findings for researchers and trainers in the area of investigative interviewing of children are discussed.

Features of public open spaces and physical activity among children : findings from the CLAN study

Objective : To examine associations between features of public open spaces, and children's physical activity.
Participants : 163 children aged 8–9 years and 334 adolescents aged 13–15 years from Melbourne, Australia participated in 2004.
Methods : A Geographic Information System was used to identify all public open spaces (POS) within 800 m of participants' homes and their closest POS. The features of all POS identified were audited in 2004/5. Accelerometers measured moderate-to-vigorous physical activity (MVPA) after school and on weekends. Linear regression analyses examined associations between features of the closest POS and participants' MVPA.
Results : Most participants had a POS within 800 m of their home. The presence of playgrounds was positively associated with younger boys' weekend MVPA (B = 24.9 min/day; p ≤ 0.05), and lighting along paths was inversely associated with weekend MVPA (B = − 54.9 min/day; p ≤ 0.05). The number of recreational facilities was inversely associated with younger girls' MVPA after school (B = − 2.6 min/day; p ≤ 0.05) and on the weekend (B = − 8.7 min/day; p ≤ 0.05). The presence of trees providing shade (5.8 min/day, p ≤ 0.01) and signage regarding dogs (B = 6.8 min/day, p ≤ 0.05) were positively associated with adolescent girls' MVPA after school.
Conclusion : Certain features of POS were associated with participants' MVPA, although mixed associations were evident. Further research is required to clarify these complex relationships.

Do features of public open spaces vary according to neighbourhood socio-economic status?

This study examined the relations between neighbourhood socio-economic status and features of public open spaces (POS) hypothesised to influence children's physical activity. Data were from the first follow-up of the Children Living in Active Neighbourhoods (CLAN) Study, which involved 540 families of 5–6 and 10–12-year-old children in Melbourne, Australia. The Socio-Economic Index for Areas Index (SEIFA) of Relative Socio-economic Advantage/Disadvantage was used to assign a socioeconomic index score to each child's neighbourhood, based on postcode. Participant addresses were geocoded using a Geographic Information System. The Open Space 2002 spatial data set was used to identify all POS within an 800 m radius of each participant's home. The features of each of these POS (1497) were audited. Variability of POS features was examined across quintiles of neighbourhood SEIFA. Compared with POS in lower socioeconomic neighbourhoods, POS in the highest socioeconomic neighbourhoods had more amenities (e.g. picnic tables and drink fountains) and were more likely to have trees that provided shade, a water feature (e.g. pond, creek), walking and cycling paths, lighting, signage regarding dog access and signage restricting other activities. There were no differences across neighbourhoods in the number of playgrounds or the number of recreation facilities (e.g. number of sports catered for on courts and ovals, the presence of other facilities such as athletics tracks, skateboarding facility and swimming pool). This study suggests that POS in high socioeconomic neighbourhoods possess more features that are likely to promote physical activity amongst children.

Presence of fish on the shallow flooded margins of a small intermittently open estuary in South Eastern Australia under variable flooding regimes

Shallow water habitats within estuarine systems are believed to be important areas for small fish. While a wide variety of shallow habitats have been studied, the land that becomes inundated by the damming effect after the closure of intermittently open mouths has previously been overlooked. Fish were sampled monthly from both the main channel and flood zone of an intermittently open estuary between July 2004 and June 2005 using minifyke nets during the day and at night. A total of 7,787 fish were collected during the study representing 13 species and 11 families. Philypnodon grandiceps was the most abundant species and, together with Atherinosoma microstoma, Pseudogobius olorum, and Galaxias maculatus, made up 94% of the total catch. Inundation of the flood zone occurred in two discrete forms associated with mouth condition, which consisted of sporadic flooding while the mouth was open, to long-term flooding for 6 months after its closure. Large numbers of fish were captured on the flood zone, which included nine species; however, A. microstoma dominated the catch. A distinct shift in the flood zone fish assemblage occurred between the two mouth conditions, which is likely associated with changes in hydro-period and food availability of the flood zone and physico-chemical parameters in the main channel. There was no longitudinal variation in the fish assemblage in both the main channel and flood zone; similarly, the diel period was found to have little effect on the fish assemblage. The total catch per unit effort did not vary across seasons and suggests that fish abundance within the estuary is stable throughout the year. Unlike other estuarine systems where shallow water fish assemblages may be structured by variations in tide and elevation within the Surrey, freshwater inflow and, more importantly, mouth condition appear to have the greatest influence in composition of the shallow water flood zone fish assemblage of intermittently open estuaries.