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

Dr. Claudia Pöhlmann  Hans Anand Pant  Jenny Frenzel  Alexander Roppelt  Olaf Köller 《Zeitschrift für Erziehungswissenschaft》2014,17(1):113-133

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.  相似文献   

Cross‐Country Skiing     

Johnny Nilsson  Per Tveit  Olav Eikrehagen 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(1):85-108

The purpose was to study the adaptation to speed in the temporal patterns of the movement cycle and determine any differences in velocity, cycle rate and cycle length at the maximum speed level in the different classical style and freestyle cross‐country skiing techniques. Eight skilled male cross‐country skiers were filmed with a digital video camera in the sagittal plane while skiing on a flat cross‐country ski track. The skiers performed three classical style techniques the diagonal stride, kick double poling and the double poling technique and four freestyle techniques paddle dance (gear 2), double dance (gear 3), single dance (gear 4) and combiskate (gear 5) at four different self‐selected speed levels slow, medium, fast and their maximum. Cycle duration, cycle rate, cycle length, and relative and absolute cycle phase duration of the different techniques at the different speed levels were analysed by means of a video analysis system. The cycle rate in all tested classical and freestyle techniques was found to increase significantly (p < .01) with speed from slow to maximum. Simultaneously, there was a significant decrease in the absolute phase durations of all the investigated skiing techniques. A minor, not significant, change in cycle length, and the significant increase in cycle rate with speed showed that the classical and freestyle cross‐country skiing styles are dependent, to a large extent, on an increase in cycle rate for speed adaptation. A striking finding was the constant relative phase duration with speed, which indicates a simplified neural control of the speed adaptation in both cross‐country skiing styles. For the practitioner, the knowledge about the importance of increasing cycle frequency rather than cycle length in the speed adaptation can be used to optimise a rapid increase in speed. The knowledge about the decrease in absolute phase duration, especially the thrust phase duration, points to the need for strength and technique training to enable force production at a high cycle rate and skiing speed. The knowledge that the relative phase duration stays constant with speed may be used to simplify the learning of the different cross‐country skiing techniques.  相似文献   

Knee angular displacement and extensor muscle activity in telemark skiing and in ski-specific strength exercises     

Johnny Nilsson  Per Haugen 《Journal of sports sciences》2013,31(4):357-364

Much of the training of competitive telemark skiers is performed as dry-land exercises. The specificity of these exercises is important for optimizing the training effect. Our aim here was to study the activation of the knee extensor musculature and knee angular displacement during competitive telemark skiing and during dry-land strength training exercises to determine the specificity of the latter. Specificity was analysed with respect to angular amplitude, angular velocity, muscle action and electromyographic (EMG) activity. Five male telemark skiers of national and international standard volunteered to participate in the study, which consisted of two parts: (1) skiing a telemark ski course and (2) specific dry-land strength training exercises for telemark skiing (telemark jumps and barbell squats). The angular displacement of the right knee joint was recorded with an electrogoniometer. A tape pressure sensor was used to measure pressure between the sole of the foot and the bottom of the right ski boot. Electromyographic activity in the right vastus lateralis was recorded with surface electrodes. The EMG activity recorded during maximum countermovement jumps was used to normalize the EMG activity during telemark skiing, telemark jumps and barbell squats. The results showed that knee angular displacement during telemark skiing and dry-land telemark jumps had four distinct phases: a flexion (F1) and extension (E1) phase during the thrust phase of the outside ski/leg in the turn/jump and a flexion (F2) and extension (E2) phase when the leg was on the inside of the turn/jump. The vastus lateralis muscle was activated during F1 and E1 in the thrust phase during telemark skiing and telemark jumps. The overall net knee angular amplitude was significantly greater (P<0.05) for telemark jumps than for telemark skiing. Barbell squats showed a knee angular amplitude significantly greater than that in telemark skiing (P<0.05). The mean knee angular velocity of the F1 and E1 phases during telemark skiing was about 0.47 rad?·?s^?1; during barbell squats, it was about 1.22 rad?·?s^?1. The angular velocity during telemark jumps was 2.34 and 1.59 rad?·?s^?1 in the F1 and E1 phase, respectively. The normalized activation level of the EMG bursts during telemark skiing, telemark jumps and barbell squats was 70–80%. In conclusion, the muscle action and level of activation in the vastus lateralis during the F1 and E1 phases were similar during telemark skiing and dry-land exercises. However, the dry-land exercises showed a larger knee extension and flexion amplitude and angular velocity compared with telemark skiing. It appears that an adjustment of knee angular velocity during barbell squats and an adjustment of knee angle amplitude during both telemark jumps and barbell squats will improve specificity during training.  相似文献   

Alternative Pathways to Chronic Depressive Symptoms in Young Adults: Gender Differences in Developmental Trajectories   总被引：1，自引：0，他引：1  

Per F. Gjerde 《Child development》1995,66(5):1277-1300

Personality and intelligence associated with depressive symptoms in 23-year-olds were evaluated using prospective data from preschool through adolescence. Gender moderated the prospective relations between personality/intelligence and age-23 depressive symptoms. Young men with elevated age-23 General Behavior Inventory (GBI) scores manifested as early as in preschool allocentric behaviors: undersocialization and interpersonal antagonism. This pattern remained highly stable over the following 15 years. Prospective correlates of depressive symptoms in young women—not reliably identified until adolescence—were more likely than in young men to express autocentric concerns: oversocialization and introspective concern with self. These gender differences continued to persist but decreased in strength after puberty. Intellectual competence displayed significantly stronger negative correlations with age-23 GBI scores in males than in females. Findings were discussed in terms of gender differences in the development of chronic depressive symptoms, with special emphasis on equifinality in developmental pathways.  相似文献   

Reading training by means of disappearing text: effects on reading performance and eye movements     

Sebastian Peter Korinth  Olaf Dimigen  Werner Sommer  Zvia Breznitz 《Reading and writing》2016,29(6):1245-1268

The Reading Acceleration Program (RAP), which uses adaptively increasing text erasure rates to enforce reading rate improvements, has been positively evaluated in various languages, reader and age groups. The current study compared the established incremental increase of text erasure rate with a training using fixed erasure rates in two groups of young, non-impaired German adults. Eye-tracking measures prior and post training examined training-related changes of eye-movement patterns. Equal gains in reading performance in both training groups led to the conclusion that not the adaptive increase but already text erasure at fixed rates provides an economically efficient tool for the enhancement of reading rates. Furthermore, eye-tracking results suggest that text erasure training affects word processing not only at one specific level, but simultaneously at pre-lexical, lexical, and post-lexical stages. Although these outcomes are promising, further research is necessary to determine the optimal individual erasure rates that preserve good comprehension at varying levels of text difficulty and in different orthographies.  相似文献   

Teachers’ objects of responsibility: something to care about in education for sustainable development?   总被引：3，自引：2，他引：1  

Per Sund  Per‐Olof Wickman 《Environmental Education Research》2008,14(2):145-163

Answers to questions about good teaching in environmental education can be expressed in different selective traditions. Questions as to what should be included in good teaching tend to be addressed by both teachers and researchers on an ideological basis. This qualitative study uses a pragmatist approach, and aims to make an empirical contribution to the debate. Rather than telling teachers what they should teach, this interview study involved listening to ten upper secondary school teachers in Sweden, and their arguments concerning their long‐term teaching purposes. Why should students learn particular things? The teachers’ answers revealed habits and frequently used the same arguments. These arguments recurrently dealt with what teachers particularly cared about, and five objects of responsibility were identified in the interviews. These objects of responsibility constitute the starting points of teachers’ actions and can be seen as personal anchor points within a selective tradition. These points of departure remind the teachers of their teaching aims and objectives, and at the same time, keep them within a tradition. While they help the teachers in their everyday practice, they could just as easily be seen as tacit obstacles to efforts to change environmental education into Education for Sustainable Development. The results are also relevant for science education in general. Issues identified in the study include how the same scientific knowledge could be used for different purposes in education, and the different personal anchor points for long‐term purposes of teaching based on teachers’ own ideas of good teaching. These results can be important in developing a reflection tool for teachers, which in turn can help them to reflect more deeply about how they might change their teaching practices.  相似文献   

Moral motivation and the battle for students: The case of studies in nursing and social work in Norway     

Karen Jensen  Per Olaf Aamodt 《Higher Education》2002,44(3-4):361-378

This paper presents data from a project onmoral motivation. It is more pragmaticallyframed on what it is that attracts students to`untrendy' fields and makes them want to do agood job. As the value structure in societychanges and the battle for students hardens,there is a growing concern that fields crucialto the development of society may lose out inthe competition for the best students. Amongthe fields that have received attention inthese debates are nursing and social work. Inpart, this is due to the fact that these fieldshave already experienced a decline inapplicants which merits concern, and in partdue to the image these studiesproject. In the debate on intake qualitiesfocus has primarily been on the academicquality of the students, and less on themotivational qualities that work of this typeimplies. The data presented here highlightsqualities related to this dimension ofprofessional work.  相似文献   

Introducing a symbolic interactionist approach on teaching mathematics: the case of revoicing as an interactional strategy in the teaching of probability     

Andreas?EckertEmail authorView author&#;s OrcID profile  Per?Nilsson 《Journal of Mathematics Teacher Education》2017,20(1):31-48

This study examines an interactional view on teaching mathematics, whereby meaning is co-produced with the students through a process of negotiation. Further, teaching is viewed from a symbolic interactionism perspective, allowing the analysis to focus on the teacher’s role in the negotiation of meaning. Using methods inspired by grounded theory, patterns of teachers’ interaction are categorized. The results show how teachers’ actions, interpretations and intentions form interactional strategies that guide the negotiation of meaning in the classroom. The theoretical case of revoicing as a teacher action, together with interpretations of mathematical objects from probability theory, is used to exemplify conclusions from the proposed perspective. Data are generated from a lesson sequence with two teachers working with known and unknown constant sample spaces with their classes. In the lessons presented in this article, the focus is on negotiations of the meaning of chance. The analysis revealed how the teachers indicate their interpretations of mathematical objects and intentions to the students to different degrees and, by doing so, create opportunities for the students to ascribe meaning to these objects. The discussion contrasts the findings with possible interpretations from other perspectives on teaching.  相似文献