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131.
Chen Chen Matthew H. Schneps Gerhard Sonnert 《Journal of Science Education and Technology》2016,25(5):806-823
Teachers choosing between different models to facilitate students’ understanding of an abstract system must decide whether to adopt a model that is simplified and striking or one that is realistic and complex. Only recently have instructional technologies enabled teachers and learners to change presentations swiftly and to provide for learning based on multiple models, thus giving rise to questions about the order of presentation. Using disjoint individual growth modeling to examine the learning of astronomical concepts using a simulation of the solar system on tablets for 152 high school students (age 15), the authors detect both a model effect and an order effect in the use of the Orrery, a simplified model that exaggerates the scale relationships, and the True-to-scale, a proportional model that more accurately represents the realistic scale relationships. Specifically, earlier exposure to the simplified model resulted in diminution of the conceptual gain from the subsequent realistic model, but the realistic model did not impede learning from the following simplified model. 相似文献
132.
Koehler K Braun H De Marees M Fusch G Fusch C Mester J Schaenzer W 《Journal of sports sciences》2010,28(13):1435-1449
The assessment of nutrition and activity in athletes requires accurate and precise methods. The aim of this study was to validate a protocol for parallel assessment of diet and exercise against doubly labelled water, 24-h urea excretion, and respiratory gas exchange. The participants were 14 male triathletes under normal training conditions. Energy intake and doubly labelled water were weakly associated with each other (r = 0.69, standard error of estimate [SEE] = 304 kcal x day(-1)). Protein intake was strongly correlated with 24-h urea (r = 0.89) but showed considerable individual variation (SEE = 0.34 g kg(-1) x day(-1)). Total energy expenditure based on recorded activities was highly correlated with doubly labelled water (r = 0.95, SEE = 195 kcal x day(-1)) but was proportionally biased. During running and cycling, estimated exercise energy expenditure was highly correlated with gas exchange (running: r = 0.89, SEE = 1.6 kcal x min(-1); cycling: r = 0.95, SEE = 1.4 kcal x min(-1)). High exercise energy expenditure was slightly underestimated during running. For nutrition data, variations appear too large for precise measurements in individual athletes, which is a common problem of dietary assessment methods. Despite the high correlations of total energy expenditure and exercise energy expenditure with reference methods, a correction for systematic errors is necessary for the valid estimation of energetic requirements in individual athletes. 相似文献
134.
Skedsmo Guri Huber Stephan Gerhard 《Educational Assessment, Evaluation and Accountability》2021,33(4):587-589
Educational Assessment, Evaluation and Accountability - 相似文献
135.
Huber Stephan Gerhard Helm Christoph 《Educational Assessment, Evaluation and Accountability》2020,32(2):237-270
Educational Assessment, Evaluation and Accountability - The crisis caused by the COVID-19 virus has far-reaching effects in the field of education, as schools were closed in March 2020 in many... 相似文献
136.
This paper explicates a central conflict that can affect science research organizations, the conflict between the anti-bureaucratic stance believed to advance science and concerns for gender equity rooted in the universalist ethos of science. We present a case study of a science research organization, using employment and publication records, a survey of 308 employees, and qualitative interviews with 60 employees. We show how anti-bureaucratic organizational structures perpetuate gender inequities for both female scientists and non-scientists. 相似文献
137.
Jennifer D. Cribbs Zahra Hazari Gerhard Sonnert Philip M. Sadler 《Child development》2015,86(4):1048-1062
This article empirically tests a previously developed theoretical framework for mathematics identity based on students’ beliefs. The study employs data from more than 9,000 college calculus students across the United States to build a robust structural equation model. While it is generally thought that students’ beliefs about their own competence in mathematics directly impact their identity as a “math person,” findings indicate that students’ self‐perceptions related to competence and performance have an indirect effect on their mathematics identity, primarily by association with students’ interest and external recognition in mathematics. Thus, the model indicates that students’ competence and performance beliefs are not sufficient for their mathematics identity development, and it highlights the roles of interest and recognition. 相似文献
138.
139.
Skill Acquisition and Reflection‐based Decision Making in a Teaching Laboratory: an evaluative study
Hans Gerhard Klinzing 《欧洲师范教育杂志》1988,11(2):167-175
This paper continues the tradition of research, development and evaluation of teaching laboratories, and, at the same time, extends earlier research in two directions: by placing more emphasis on the improvement of a reflection‐based decision‐making ability in becoming a teacher (beyond effective skill acquisition), and by concentrating on the improvement of presentation skills, an area neglected in teacher training. Based on research on teaching and teacher training, a training program was developed for enhancing the trainees’ nonverbal expressiveness in presentations that, by fostering reflection‐based decision making through experimenting with presentation skills in a laboratory with feedback and discussions, also improves the clarity, interest and social climate of presentations. The evaluation of the most recent Version of this program reveals that significant gains could be achieved not only in nonverbal expressiveness as an indicator for successful skill acquisition, but also in the global aspects of successful lecturing indicating that the program was also effective for the improvement of the trainees’ reflection‐based decision making. 相似文献
140.
Gerhard Reichmann 《Zeitschrift für Hochschulrecht, Hochschulmanagement und Hochschulpolitik: zfhr》2007,6(2):37-45
Gegenstand des vorliegenden Beitrages ist die Vorstellung eines Projektes zur Evaluierung eines Studienplanes in Form der
Ermittlung von Verbesserungsm?glichkeiten hinsichtlich der Studienbedingungen. Evaluiert wird der aktuelle Studienplan für
die Studienrichtung Betriebswirtschaft an der Karl-Franzens-Universit?t Graz. Zun?chst werden anhand einer kombinierten offenen
und strukturierten Befragung Verbesserungswünsche von Studierenden, die nach diesem Studienplan studieren, gewonnen. Im Anschluss
werden jene Verbesserungswünsche identifiziert, die realisierbar erscheinen. Zielsetzung der gegenst?ndlichen Evaluierung
ist eine Verbesserung der Studienqualit?t. 相似文献