Coordination in gait: Demonstration of a spectral approach

Many important notions in Life Sciences are linked with the idea of cycles, periodicity, fluctuations and transitions. The aim of this paper is to use spectral analysis in a unique way to study and quantify whole body coordination during gait. A participant walked at 3 km/h and ran at 15 km/h on a treadmill for 2 minutes. Position of the approximate center of rotation of the toe, ankle, knee, hip, shoulder, elbow and wrist, heel, PSIS and head were collected (CODAmotion; 100 Hz). Fast Fourier Transform was performed on x-coordinate data of the 1) knee marker; 2) 4 markers attached to the free lower limb (toe, ankle, heel and knee); 3) left and right free lower limbs; 4) whole body (all markers). Gait is described by a largely harmonic and resonant oscillator that operates unilateral free limbs at the stride frequency, and axial regions at the step frequency. Running is described by a more harmonic and resonant oscillating structure than walking, with a 3 times higher Q factor and 47% lower Inharmonicity Index. This method is presented as a way to capture global dynamics of our complex multi-segment system, and presents a novel application of spectral analysis to study coordination.     

The motivations of career change students in teacher education

In this article, results are presented from a large‐scale online survey about the motivations of career change students, and their beliefs about the attributes that they bring to the teaching profession. The findings revealed that career changers' motivations were largely intrinsic, although pragmatic decisions were also important, with perceived family‐friendliness of a teaching career a common response. These findings generally support findings of previous research into motivations to teach, as found in the literature. The data examined in this paper also revealed that career change entrants believed that the most important attributes they bring to teaching are life experiences, generic workplace skills and experience, and personal qualities, rather than specific content knowledge. These findings provide support for the continued targeting of career change people into the profession, particularly in the current policy context in which some stakeholders express concerns about a perceived lack of quality of teaching in Australian schools.     

The flourishing of care in a multidisciplinary Faculty Learning Community

In a multidisciplinary Faculty Learning Community focussed on exploring threshold concepts and bottlenecks in learning, care emerged as an unanticipated dimension to our work, transforming the ways we view teaching, learning, our disciplines, and educational development. In this piece, we reflect on the types of care that emerged and consider implications for educational development.     

Artificial grammar learning in primary school children with and without developmental dyslexia

This paper explores implicit learning in typically developing and primary school children (9–12 years old) with developmental dyslexia using an artificial grammar learning (AGL) task. Two experiments were conducted, which differed in time of presentation and nature of the instructional set (experiment 1—implicit instructions vs experiment 2—explicit instructions). Repeated measures analysis of variance (group × grammaticality × chunk strength) showed a group effect only in experiment 1 (implicit instructions), with only the typically developing children showing evidence of AGL. There was a grammaticality effect (adherence to the rules) for both groups in the two experimental situations. We suggest that the typically developing children exhibited intact implicit learning as manifested in AGL performance, whereas children with developmental dyslexia failed to provide such evidence due to possible mediating cognitive developmental factors.     

Using common formative assessments as a source of professional development in an urban American elementary school

By implementing a system of common formative assessments, the teachers at an American urban elementary school improved student achievement and facilitated their own professional development. By aligning content standards with assessments and purposeful instruction, the teachers at this school developed a depth of knowledge about their content standards, improved their ability to design assessments, learned to better link assessments with instruction, and planned for intervention for students who continued to struggle with reading and writing.     

命运多舛露脊鲸

这是一种奇妙的动物,它们可以轻松下潜50米,让自己那覆盖着瘤状突起物的大脑袋掠过海底;它们也能仰泳,露出的大肚皮像极了倾覆的十七世纪西班牙大帆船;它们张开深不见底的大嘴觅食,让海流把食物直接送进口;大海中惊涛骇浪转瞬即至,     

Projecting to the NAEP Scale: Results from the North Carolina End-of-Grade Testing Program

Data from the North Carolina End-of-Grade test of eighth-grade mathematics are used to estimate the achievement results on the scale of the National Assessment of Educational Progress (NAEP) Trial State Assessment. Linear regression models are used to develop projection equations to predict state NAEP results in the future, and the results of such predictions are compared with those obtained in the 1996 administration of NAEP Standard errors of the parameter estimates are obtained using a bootstrap resampling technique.