Adolescent physical activity levels: discrepancies with accelerometer data analysis

This study investigated the effects of epoch length and cut point selection on adolescent physical activity intensity quantification using vertical axis and vector magnitude (VM) measurement with the ActiGraph GT3X+ accelerometer. Four hundred and nine adolescents (211 males; 198 females) aged 12–16 years of age wore accelerometers during waking hours. The GT3X+ acceleration counts were reintegrated into 1, 5, 15, 30 and 60 s epoch lengths for both vertical axis and VM counts. One cut point was applied to vertical axis counts and three different cut points were applied to VM counts for each epoch length. Significant differences (P < 0.01) in mean total counts per day were observed between vertical axis and VM counts, and between epoch lengths for VM only. Differences in physical activity levels were observed between vertical and VM cut points, and between epoch lengths across all activity intensities. Our findings illustrate the magnitude of differences in physical activity outcomes that occur between axis measurement, cut points and epoch length. The magnitude of difference across epoch length must be considered in the interpretation of accelerometer data and seen as a confounding variable when comparing physical activity levels between studies.     

Research,Development and Tacit Capability in the Education System

The relevance gap between educational practice and research is often seen as a methodological problem. But communicative and social issues are also vitally important. The idea of tacit capability, from recent work in economics on research and development, characterises the knowledge which can be acquired by and attributed to an organisation as a conversational whole. (Schön's idea of reflective practice is unhelpfully monological.) I interpret and validate this idea in the light of Habermas’ account of communicative action. I use it to explore social problems in the relation between educational practice and research and suggest solutions modelled on enlightened industrial practice in Europe.     

Creating a model to examine motivation for sustained engagement in online communities

This paper considers factors that influenced long-term engagement in an online community. It draws on a case study of a 6 year online collaboration amongst a group of European teachers. The email interchange between these teachers was, with their agreement, saved and used as research data; intensive group interviews were also conducted, involving all the participants in the online group. Dynamic motivation models and Csikszentmihalyi’s concept of motivational flow were used to create a theoretical framework to analyse the email interchanges and group interview data so as to build an understanding of the teachers’ commitment to the online community. As a result of the analysis, the existing theoretical models were modified to produce a new combined model. This incorporates ideas grounded in the participants’ reasons for their sustained engagement in the collaboration. This combined model could provide a basis for planning future virtual interactions and for assessing their sustainability.     

The interface between mathematics and design and technology in secondary schools

ABSTRACT

This article suggests that there are important connections between design and technology and mathematics curricula and that these are not fully made in the United Kingdom National Curriculum. Using three examples, the authors show how there are real opportunities in design and technology teaching for incorporating mathematical learning, but that all too often these are lost because they are not made explicit. Again, the authors argue that too much mathematics teaching is dominated by abstract investigation rather than practical problem‐solving. They conclude by suggesting that teaching should transcend subject boundaries and be concerned with real‐life situations.     

The global classroom: advancing cultural awareness in special schools through collaborative work using ICT

This paper reports research on cross‐national collaboration through Information and Communications Technology (ICT) within the statutory curricula of 10 special schools in Northern Ireland and the Republic of Ireland. Working in north–south paired classes, the pupils carried out joint tasks using asynchronous computer conferencing and videoconferencing. The full spectrum of learning difficulty and disability was represented amongst the participating pupils. Interviews were conducted to elicit the views and experiences of the teachers in the 2002/03 cohort. The main aims were to discover whether cultural awareness developed through joint tasks using the two technologies, if computer conferencing improved literacy and ICT skills, and if videoconferencing enhanced oral communication. The results showed that cultural awareness developed as far as cognition allowed, when pupils in partner schools became aware of similarities as well as differences. Those with sufficient keyboard ability benefited from computer conferencing and ICT competence improved, but the much preferred medium for collaborative, inter‐school work was videoconferencing. All but the most dependent pupils could participate, and valuable, transferable social and communication skills were acquired.     

Between ‘Bastard’ and ‘Wicked’ leadership? School leadership and the emerging policies of the UK Coalition Government

Barker argues that in England under New Labour, school leaders and teachers have been ‘bastardised’ and suggests that the situation in 2010, with a general election afforded an opportunity in education policy for the ‘pendulum to swing’. In this article, the key points about ‘bastard Leadership’ are briefly summarised. The article then develops a view of schools as sites of complexity and ‘wickedity’ as an alternative to the linear reductionist approaches of managerialists. These two perspectives present the extremes of a spectrum against which the trajectory of school leadership can be viewed as it emerges from the New Labour years and is now being developed by the Coalition Government. Evidence from ministerial speeches and the Coalition Government's flagship White Paper, The Importance of Teaching, are used to examine key issues of freedom and trust, reducing bureaucracy and increasing autonomy for schools as ways of exploring the extent to which the new government's policies on school leadership are, or are not, moving away from those of their New Labour predecessors.     

Evolution and revolution: gauging the impact of technological and technical innovation on Olympic performance

A number of studies have pointed to a plateauing of athletic performance, with the suggestion that further improvements will need to be driven by revolutions in technology or technique. In the present study, we examine post-war men's Olympic performance in jumping events (pole vault, long jump, high jump, triple jump) to determine whether performance has indeed plateaued and to present techniques, derived from models of human growth, for assessing the impact of technological and technical innovation over time (logistic and double logistic models of growth). Significantly, two of the events involve well-documented changes in technology (pole material in pole vault) or technique (the Fosbury Flop in high jump), while the other two do not. We find that in all four cases, performance appears to have plateaued and that no further "general" improvement should be expected. In the case of high jump, the double logistic model provides a convenient method for modelling and quantifying a performance intervention (in this case the Fosbury Flop). However, some shortcomings are revealed for pole vault, where evolutionary post-war improvements and innovation (fibre glass poles) were concurrent, preventing their separate identification in the model. In all four events, it is argued that further general growth in performance will indeed need to rely predominantly on technological or technical innovation.