Auswirkungen einer Intervention auf die Auseinandersetzung und Arbeit mit Bildungsstandards bei Mathematik-Lehrkräften

The introduction of educational standards in Germany forced teachers to change their perspective in order to achieve competence-oriented teaching. The initial representative surveys throughout Germany indicated that a short time after the introduction of the educational standards, teachers in various school forms were still very slow to implement the idea of competence-oriented teaching in their everyday school life. This article presents the effects of a newly developed intervention programme in which mathematics teachers familiarised themselves with educational standards for the first time. The teacher data and the performance data of the pupils of the schools participating in the project are compared in a longitudinal study with the data of schools which were not included in the intervention programme. The results indicate that after the intervention programme has run for one year, mathematics teachers in the project schools are more competence-oriented in their teaching and reflect more intensively on the concept of the educational standards than mathematics teachers in the comparison schools.     

Body composition and nutritional profile of male adolescent tennis players

Abstract

In this cross-sectional study, we evaluated the body composition and dietary intake of 44 adolescent tennis players. After being divided into two groups (age 10–13 years and age 14–18), the players had their weight, height, and sexual maturation assessed. Dual-energy X-ray absorptiometry was used to assess body composition. Food intake was obtained from a non-consecutive 4-day food record. The data were analysed using the Virtual Nutri v.1.0 software and compared with the present recommendations for adolescent athletes or dietary reference intakes. Body mass index and body fat for tennis practice were adequate for 89% and 71% of the tennis players respectively, regardless of age group. A calorie deficit greater than 10% of energy expenditure was observed in 32% of the sample. Fifty percent of the athletes consumed carbohydrates in accordance with recommended values. Protein and lipid intakes were above recommended values, while fibre, calcium, potassium, magnesium, and folic acid intakes were below recommendation for 98%, 80%, 100%, 100%, and 98% of the tennis players respectively. The observed nutritional deficiencies represent an additional barrier for adolescents engaged in competitive sports to achieve an optimum nutrition to maintain growth, health, and performance.     

Optimised heart rate formulae to monitor endurance training in sedentary individuals

Abstract

The aim of this study was to assess the validity of the heart rate formula 170 – 0.5 age ± 10 used to prescribe endurance training for healthy sedentary or moderately trained individuals. A total of 795 incremental tests of women and men during running and cycling were analysed. The maximum heart rate, heart rate at deflection and age-dependent declines of these heart rates were determined. The maximum heart rate and the heart rate at deflection were greater during running (women: 192 ± 10 and 181 ± 9 bpm; men: 191 ± 10 and 179 ± 10 bpm) than cycling (women: 185 ± 11 and 170 ± 11 bpm; men: 187 ± 10 and 169 ± 11 bpm, P < 0.001) without any sex-based difference. With the upper limit of the existing heart rate formula, 4% during running and 35% during cycling exceeded the heart rate at deflection. We suggest two heart rate formulae for healthy sedentary or moderately endurance trained individuals separated for mode of exercise but not for sex: 165 – 0.5 age ± 5 for running and 160 – 0.5 age ± 5 for cycling.     

The influence of a new sole geometry while running

Abstract

Running shoe construction influences the forces experienced by the human body while running. The aim of this study was to ascertain whether the new sole architecture of the On running shoe reduces ground reaction forces compared with running barefoot or with a conventional running shoe and whether it changes the physiological parameters of running in shoes. Thirty-seven trained male participants were studied while running at submaximal speeds wearing their conventional running shoe, wearing the On running shoe and while barefoot. Additional biomechanical and physiological values were investigated to determine whether the On running shoe induced any changes in these parameters compared with conventional running shoes. The On exhibited similar ground reaction forces as conventional shoes, and these were different from the forces experienced while running barefoot, showing that the On was more similar to typical shoed running. No difference was observed in running economy between the On and a conventional shoe model. However, a slightly lower heart rate (HR) (≈1.3%) and blood lactate concentration (≈5.5%) were observed during submaximal running with the On running shoe compared with a conventional running shoe, as well as a greater lateral deviation of the centre of pressure mid-stance. The ramifications of the reduced HR and blood lactate concentration for competitive performance are unknown.     

Concerns of Teachers about Implementing Individualized Instruction in the Physical Education Setting

Abstract

Teacher concerns about individualized physical education were measured by the Stages of Concern (SoC) questionnaire developed at The University of Texas Research and Development Center. Data were collected immediately before and just following a replicable, seven-week, client-centered, field-based inservice training program involving 15 physical education teachers. A case study approach was used to report group and selected individual concerns profiles. The results of this study indicated that while change is a difficult and time-consuming process, it can be facilitated by trainers focusing on individual teacher's needs and concerns.     

Deaf and hard of hearing students' problem-solving strategies with signed arithmetic story problems

The use of problem-solving strategies by 59 deaf and hard of hearing children, grades K-3, was investigated. The children were asked to solve 9 arithmetic story problems presented to them in American Sign Language. The researchers found that while the children used the same general types of strategies that are used by hearing children (i.e., modeling, counting, and fact-based strategies), they showed an overwhelming use of counting strategies for all types of problems and at all ages. This difference may have its roots in language or instruction (or in both), and calls attention to the need for conceptual rather than procedural mathematics instruction for deaf and hard of hearing students.     

A Case Study of a Turnaround High School: An Examination of the Maryland State Department of Education Breakthrough Center Intervention

This study examined the Maryland State Department of Education Breakthrough Center (BTC) engagement in a Baltimore City turnaround high school. Utilizing a case-study design and mixed-methods research, data were collected through interviews, informal observations, and review of administrative and achievement documents. Beginning in the 2011–2012 academic year, the BTC has been working in collaboration with school personnel to improve the educational experiences and academic achievement of students. School personnel recognized that the BTC has been responsive to teachers' requests and has exhibited a flexible approach building collaborative and nonevaluative relations. Administrative and achievement data also indicated improvement in school outcome measures during the past 3 years. Nevertheless, school faculty also identified important challenges of the BTC intervention, such as the relevance of this intervention for veteran teachers, the extent to which the needs of all student populations were met, and the sustainability of the intervention.     

The explosion of real time and the structural conditions of temporality in a society of control: durations and urgencies of academic research

In the context of ongoing debates about the distinctive temporalities associated with contemporary regulative regimes, this paper explores the interpretive trajectories initiated in contrasting conceptualisations of the politics of time. This exploration is developed through analysis of interview data from a study of unconscious relations in academic practice. Section one uses one moment of data to contrast phenomenological, Deleuzian and Lacanian theorisations of the relation between time and subjectivity. Section two is an exegesis of Lacan’s paper on Logical Time. This outlines the way temporality is structured in relation to the subject’s guess about the expectations of the Other. Section three uses this to develop an interpretation of three temporalities that constitute the space of contemporary academic subjectivities. The final section considers the intensification of the juxtaposition of these incongruent temporalities, contrasting Lacanian and Deleuzian theorisations of time in the Real/virtual and their implications for both methodological and political strategy.     

A change of perspective – Exploring Mexican primary and secondary school students’ perceptions of their teachers differentiated instructional practice

With the increasing student diversity, the establishment of inclusive classrooms has become a top concern of policy-makers worldwide urging teachers to differentiate their instruction according to students’ individual learning needs. As the implementation of differentiated instruction (DI) relies mainly on teachers, previous research has mostly focused on examining teachers’ perspectives on their use of differentiation. In contrast, far less attention has been paid to explore students’ perspectives about their experiences in inclusive classrooms. Therefore, this study aims at examining students’ experiences of their teachers’ actual DI practice. Moreover, this study sets the spotlight on Mexico, a country that has faced changes with a recent proposed educational model. Results from a mixed analysis of variance revealed that students do in fact perceive that their teachers implement DI practices. It appears that both primary and secondary school teachers implement more frequent variants of mastery learning as well as tutoring systems as a means to differentiate their instruction. Implications of the results, as well as further lines of research, are discussed.     

Evaluation of a High-Engagement Teaching Program for STEM Graduate Students: Outcomes of the Future Academic Scholars in Teaching (FAST) Fellowship Program

Higher education institutions prepare future faculty members for multiple roles, including teaching. However, teaching professional development programs for graduate students vary widely. We present evaluation data from a high engagement program for STEM doctoral students. We analyzed the impact on three cohorts of participants over three academic years and identified the components most influential upon their teaching professional development. Participants found the year-long teaching assessment project and the disciplinary and reflective focus instrumental for improving their knowledge of teaching and learning. We recommend these components for the design of other such high-engagement programs.