Curve and instep kick kinematics in elite female footballers

The three-dimensional kinematics of international female footballers performing a simulated direct free kick (curve kick) were compared with those of an instep kick. Reflective markers attached to the participants were tracked by 17 Vicon cameras sampling at 250 Hz. Foot velocity at ball impact did not differ between the two types of kick, but the way in which foot velocity was generated did differ, with instep kicks using a faster approach velocity and greater linear velocities of the hip and knee, and curve kicks using a greater knee angular velocity at impact. In both types of kick, peak knee angular velocity and peak ankle linear velocity occurred at ball impact, providing biomechanical support to the common coaching recommendation of kicking through the ball. To achieve a curved ball trajectory, players should take a wide approach angle, point the support foot to the right of the intended target (for right-footed players), swing the kicking limb across the face of the goal, and impact the ball with the foot moving upwards and in an abducted position. This information will be useful to coaches and players in identifying the fundamental coaching points necessary to achieve a curved trajectory of the ball compared with the more commonly described instep kick kinematics.     

Career Narratives of African American Female College Students: Insights for College Counselors

The authors collected narrative data from 11 African American female college students at a predominantly White institution using the Career Construction Interview (Savickas & Hartung, 2012 ), the Future Career Autobiography (Rehfuss, 2009 ), and a qualitative career experiences questionnaire. Using the constant comparison method (Strauss & Corbin, 1990 ), the authors uncovered 4 overarching themes based on the unique experiences of participants. The authors present insights for college counselors providing career development services.     

ePortfolios and Reflective Practice for Food Science Students

The study investigated students’ perceptions and attitudes toward the use of ePortfolios for reflective practice as a learning and teaching strategy. A mixed‐method approach was applied to the study in a first‐year food science unit, at a regional Australian university. Data were generated via 3 sources, in order to provide the evidential basis for the investigation, including: a mixed method survey, access to student's exam results, and students’ ePortfolio reflections. The findings identified 3 key positive aspects. First, a variety of assessment methods was key to enhancing the overall learning of 1st‐year food science students. Second, ePortfolio reflective writing can be a key aspect for improved student engagement. Finally, structured ePortfolio sessions can help food science students consolidate knowledge, while also allowing them to encounter new ideas related to food science theory and develop technical knowledge. However, technological issues with using an ePortoflio can cloud the value of the reflective task for some students. Recommendations are made for how to better support and implement reflective practice using ePortfolios to enhance the learning of food science students.     

“Do you want an idea of what they’re doing?” Transgressive data generation and analysis within a bilingual writers workshop

We consider how research participants engage alongside researchers as choreographers of data generation and highlight the everyday practices of researchers and participants in motion within and across time and space. Data for this case analysis were generated during a two-year qualitative study investigating multimodal literacies, multilingualism, and literacy teacher development. We utilized microethnographic discourse analysis to analyze a video excerpt from a classroom observation during writers workshop in a fourth-grade bilingual classroom. We sought to understand how the teacher’s and students’ discursive moves during the event tactically disrupted the researchers’ agenda in the moment and complicated attempts at data analysis. Our analyses illustrate how the teacher multiply situated herself in ways that trouble dichotomous framings of teachers’ work, such as traditional or nontraditional, as well as dominant conceptualizations of qualitative research, such as data “collection.” We end with implications for interpreting and representing research findings.     

Dropouts in Swiss vocational education and the effect of training companies’ trainee selection methods

In the Swiss vocational education system, which is often called a ‘Dual System’, trainees enter into an apprenticeship contract with a training company. On average, 25% of those contracts are terminated prematurely (PCT). This article examines the relationship between training companies’ selection methods and PCTs. The investigation is based on a quantitative study with a cross-sectional design and on qualitative interviews. Trainers and operations managers (N = 335) of Swiss training companies for cooks and painters were surveyed. Half of the companies have been affected by a PCT in the past and the other half have not. The findings indicate that a certain amount of the explained variance between companies with and without reported PCTs can be explained by the companies’ selection process. Companies that were affected by a PCT use a job interview and a company visit significantly less often in their selection process than companies without a PCT.     

A student-centred approach: a qualitative exploration of how students experience access and success in a South African University of Technology

This article investigates students’ understanding and students’ experiences of access and success at a Higher Education Institution. There is a growing discourse around how students at Higher Education Institutions experience access and success. These discussions are imperative so that educational practices, university systems and processes as well as educational development initiatives can be tailored to meet the needs of all students. This specifically relates to issues of how students access the university, both epistemically and culturally and what their stories of success are in their path to and through the university. Qualitative research methodologies have been used for data collection and analysis. This article describes a six-month pilot study, which falls under the Siyaphumelela (‘we succeed’) student success project. In this pilot, forty-five interviews were conducted with undergraduate students. This article is underpinned by Tinto’s theory of integration. Moving away from the discourse of unprepared and underprepared students, our approach advocates that institutions prepare better for students who have not had the advantage of acquiring the necessary skills and knowledges that would assist them to be successful in their higher education journey. This study has found that the institution is already providing services which are much needed by students for their success. However, an extension of these systems needs to take place so they reach the entire student population. Our approach in this project is holistic because we understand that how students experience access, success and student centeredness is intricately linked to becoming university students.     

Hands on what? The relative effectiveness of physical versus virtual materials in an engineering design project by middle school children

“Hands‐on” activities play an important, but controversial, role in early science education. In this study we attempt to clarify some of the issues surrounding the controversy by calling attention to distinctions between: (a) type of instruction (direct or discovery); (b) type of knowledge to be acquired (domain‐general or domain‐specific); and (c) type of materials that are used (physical or virtual). We then describe an empirical study that investigates the relative effectiveness of the physical–virtual dimension. In the present study, seventh and eighth grade students assembled and tested mousetrap cars with the goal of designing a car that would go the farthest. Children were assigned to four different conditions, depending on whether they manipulated physical or virtual materials, and whether they had a fixed number of cars they could construct or a fixed amount of time in which to construct them. All four conditions were equally effective in producing significant gains in learners' knowledge about causal factors, in their ability to design optimal cars, and in their confidence in their knowledge. Girls' performance, knowledge, and effort were equal to boys' in all conditions, but girls' confidence remained below boys' throughout. Given the fact that, on several different measures, children were able to learn as well with virtual as with physical materials, the inherent pragmatic advantages of virtual materials in science may make them the preferred instructional medium in many hands‐on contexts. © 2006 Wiley Periodicals, Inc. J Res Sci Teach     

Interactions between defining,explaining and classifying: the case of increasing and decreasing sequences

This paper describes a study in which we investigated relationships between defining mathematical concepts — increasing and decreasing infinite sequences — explaining their meanings and classifying consistently with formal definitions. We explored the effect of defining, explaining or studying a definition on subsequent classification, and the effect of classifying on subsequent explaining and defining. We report that (1) student-generated definitions and explanations were highly variable in content and quality; (2) explicitly considering the meaning of the concept facilitated subsequent classification, and giving a personal definition or explanation had a greater effect than studying a given definition; (3) classifying before defining or explaining resulted in significantly poorer definitions and explanations. We discuss the implications of these results for the teaching of abstract pure mathematics, relating our discussion to existing work on the concept image/concept definition distinction and on working with examples.     

Confronting,Challenging, and Changing Teachers' Beliefs: Implications from a Local Systemic Change Professional Development Program

Journal of Science Teacher Education -     

Teaching the Inquiry Process Through Experimental Mathematics

Abstract

In this paper, we discuss the Experimental Mathematics course taught at Valparaiso University since 2009. We focus on aspects of the course that facilitate students’ abilities to ask and explore their own research questions.