Gaming in a 3D multiuser virtual environment: engaging students in Science lessons

Based on the exploratory study of a 3D multiuser virtual environment (3D MUVE), known as Quest Atlantis (QA), in a series of Primary Four (10‐ to 11‐year‐olds) Science lessons at Orchard Primary School in Singapore, this paper examines the issues of learning engagement and describes the socio‐cultural context of QA's implementation. The students and teacher were observed during the lessons, interviewed after, and the completed quests were analysed to determine the level of engagement achieved. A pre‐ and posttest on the Science concepts covered was also administered. A seven‐level taxonomy of engagement was used to provide the study with a more holistic perspective of engagement, together with the attempt to concretise the element of engagement into observable traits. Although there was a significant improvement of the posttest over the pretest, the level of engagement of the students was low (between 3 and 4). The lack of engagement might be a result of the distractions in the 3D MUVE, the students’ difficulty with language used in the QA, their lack of computer competency for QA tasks, and/or their inability to complete the quests’ section on reflections. The biggest challenges to the integration of QA into the Science curriculum were the interdependent issues of time (or lack of it) and ‘buy‐in’ by the school and parents.     

Physical and psychomotor performance of Australian football and rugby league officials during a match simulation

The onset of exercise facilitates an improvement in psychomotor performance until the second ventilatory threshold, after which performance is reduced. This inverted-U relationship appears valid for incremental and steady-state exercise, however, not for intermittent exercise. This study examined changes in psychomotor performance of team sport officials during a laboratory-based match simulation. Twelve elite Australian football (n = 5) and rugby league (n = 7) officials (32.5 ± 5.5 years; 180.0 ± 6.8 cm; 78.8 ± 7.6 kg) completed the match simulation on a non-motorised treadmill. Physiological measures were routinely taken, while psychomotor performance was assessed using the Eriksen flanker task (multiple-choice response time). Significant reductions (P < 0.05) were observed in distance covered and high-speed running during the second half when compared to the first. No significant differences (P > 0.05) in psychomotor performance at different time points were observed. Response time was significantly improved when running above 65% of maximal sprinting speed (P < 0.01). This data questions the application of the inverted-U hypothesis for intermittent exercise and suggests that the short high-intensity efforts may not result in the same physiological events that limit psychomotor performance during sustained high-intensity exercise. More so, the high-intensity efforts during the match protocol appeared to promote psychomotor performance during the intermittent exercise.     

How much of a difference do principals make? An analysis of between-schools variation in academic achievement in Hong Kong public secondary schools

This article aims to explain the role principals play in the variation in academic achievement between secondary schools in Hong Kong. The article draws on survey data from 179 key staff and 2,037 students from 42 schools. The study uses 2 analytical approaches. First, it employs classification and regression tree analysis (CART). This was used to sort out the most significant leadership practices associated with student achievement. Second, based on first-stage analysis, the study further explores the effects of leadership practices on academic achievement using hierarchical linear modelling (HLM). Results indicate that transparent and efficient communication structures as managed by principals explained approximately 12% of between-schools variation in academic achievement. Leadership practices related to quality assurance and accountability and resource management also contributed to explaining between-schools variation in academic achievement, yet they had negative effects on student achievement. Implications for research and practice are discussed.     

Peer assessment in a test-dominated setting: empowering, boring or facilitating examination preparation?

The literature suggests that peer assessment contributes to the development of student learning and promotes ownership of assessment processes. These claims emerge from research conducted primarily in Western contexts. This exploratory paper reports on the perspectives that a class of Hong Kong primary school students and their teachers have on their engagement with peer assessment. It draws on data collected through extensive interviews and classroom observations from a 2-year case study. The findings indicate that student perceptions about the usefulness of peer assessment follow from their perspectives on quality of peer feedback, peer language proficiency, and the novelty or repetitiveness of its processes. Teachers and students also viewed peer assessment as assuming a wider role in preparing for examinations and future secondary schooling. A key implication is that assessment practices are deeply cultural and, in test-dominated settings, peer assessment may have most potential when explicit links are drawn with preparation for summative assessment.     

Golfers do not respond to changes in shaft mass properties in a mechanically predictable way

A common belief in the golf community is that a lighter shaft allows the golfer to swing the club faster. From a mechanical point of view, reducing the mass of the shaft would result in a faster swing. However, a golfer is not a purely mechanical system, and so it is simplistic to assume that identical loads will be applied when swinging different clubs. Therefore, the purpose of this study was to test the hypothesis that golfers behave similar to a mechanical model when swinging clubs of varying mass. A torque driven model estimated the effects caused by the addition of 22?g to the shaft. Twelve golfers hit balls with a standard driver as well as a driver fitted with the same 22?g increase in mass. Club kinematics were collected with a high-speed motion capture system. The model predicted a 1.7?% lower club head speed for the club with additional mass. One subject showed a similar reduction (1.4?%), but one subject showed an increase in club head speed by 3.0?%. Ten subjects did not show any significant differences. These results suggest that golfers do not respond to changes in club mass in a mechanically predictable way.     

The influence of golf club shaft stiffness on clubhead kinematics at ball impact

The role of shaft stiffness on the golf swing is not well understood. Studies in which golfers hit balls with clubs of varying shaft flex have reported changes in ball distance. The results of mathematical models suggest that shaft stiffness affects only the orientation of the clubhead at impact, not the speed of the clubhead, but there are no experimental results validating these findings. The purpose of this study was therefore to experimentally examine the influence of shaft stiffness on clubhead kinematics at ball impact. Forty golfers hit 10 balls with each of five drivers varying in shaft stiffness from 'Ladies' to 'Extra-Stiff', in a double-blind study design. The motions of three reflective markers attached to the clubhead were captured with a high-speed motion analysis system. At ball impact, shaft stiffness had a statistically significant influence on clubhead speed for 27 subjects, on loft angle for 11 subjects, and on lie angle for all 40 subjects. No effect was observed on face angle, in to out path angle, or attack angle. These results show that shaft stiffness can affect ball launch conditions by altering clubhead speed and/or loft angle.     

Understanding the Power of Words in Multicultural Education

Historically, words are powerful! In many cases, they are used appropriately when we value people and used inappropriately when we hate them. As a result, they have become powerful tools in multicultural education and interactions. In today's changing world with demographic shifts in power and paradigm, the society is bombarded with words that hate and words that love. As it appears, words are used to satisfy jaundiced and myopic views, and they are constructs that frequently lead to labels, stereotypes, and illusory generalizations. While we do not advocate policing or legislating words, we advocate words that can help individuals to maximize their fullest potential in our multicultural society. In this article, we advance this premise and suggest ways to increase multicultural education in schools and communities.