Examining the Beliefs and Practices of Four Effective Australian Primary Science Teachers     

Angela Fitzgerald  Vaille Dawson  Mark Hackling 《Research in Science Education》2013,43(3):981-1003

With trends across many countries still indicating the decline of student interest in school science and diminishing numbers of students studying science beyond the compulsory years, it seems that the field remains in crisis. To address these unfortunate trends, there needs to be a greater emphasis on science education research that highlights the good news stories. For example, what are science teachers actually doing in their classrooms to increase student interest and understanding in science? This article focuses on the science teaching beliefs and practices of four Western Australian primary school teachers. The teachers were nominated by a professional colleague as effective practitioners. The study involved gathering information from classroom observations and teacher interviews to provide background information to assist in developing understandings of these teachers and their science teaching. This article reports on the initial findings drawn from Deanne A, Kate B, Lisa C and Rebecca D. Their practices were organised into the following six categories: classroom environment; conceptual knowledge and procedural skills; teaching strategies and approaches; student-specific considerations; teacher-specific considerations; and context-specific considerations. In examining the components contributing to these categories, it was evident that the teachers’ beliefs, as well as the contextual factors inherent in each classroom environment, influenced how and why they teach science in the ways they do.  相似文献   

Families as Partners     

Neil Dawson  Brenda McHugh 《Pastoral Care in Education》2013,31(2):102-109

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A comparison of haemolytic responses in fore-foot and rear-foot distance runners     

Stuart Caulfield  Kirsty A. McDonald  Brian Dawson  Sarah M. Stearne  Ben A. Green  Jonas Rubenson 《Journal of sports sciences》2016,34(15):1485-1490

This study examined the haemolytic effects of an interval-based running task in fore-foot and rear-foot striking runners. Nineteen male distance runners (10 fore-foot, 9 rear-foot) completed 8 × 3 min repeats at 90% vVO_2peak on a motorised treadmill. Pre- and post-exercise venous blood samples were analysed for serum haptoglobin to quantify the haemolytic response to running. Vertical ground reaction forces were also captured via a force plate beneath the treadmill belt. Haptoglobin levels were significantly decreased following exercise (P = 0.001) in both groups (but not between groups), suggesting that the running task created a haemolytic stress. The ground reaction force data showed strong effect sizes for a greater peak force (d = 1.20) and impulse (d = 1.37) in fore-foot runners, and a greater rate of force development (d = 2.74) in rear-foot runners. The lack of difference in haptoglobin response between groups may be explained by the trend for fore-foot runners to experience greater peak force and impulse during the stance phase of their running gait, potentially negating any impact of the greater rate of force development occurring from the rear-foot runners’ heel strike. Neither type of runner (fore-foot or rear-foot) appears more susceptible to technique-related foot-strike haemolysis.  相似文献   

How first-year students perceive and experience assessment of academic literacies     

Jiming Zhou  Phillip Dawson 《Assessment & Evaluation in Higher Education》2020,45(2):266-278

Abstract

First-year university students’ underdeveloped academic literacies can lead to dissatisfaction and poor performance. University teachers find it difficult to take action without an understanding of students’ perceptions and needs. This study investigates first-year Chinese students’ perceptions and experiences related to assessment of academic literacies in an English-as-a-foreign-language university context. The datasets include student focus groups at two different time points over their first university year, self-reflective essays written by students at the end of the year, and audio records of nine units of teaching in three teachers’ classes. Findings highlight that fostering students’ academic literacies incorporates both linguistic development and epistemological adaptation. Students held mixed feelings towards alternative assessment other than examinations. Their personal learning goals of using English in everyday scenarios dampened their commitment to teachers’ goals of developing learners’ academic literacies. Findings suggest assessment can be an effective ‘card’ played by teachers to nurture students’ appreciation of new learning goals, communicate areas for improvement in learning strategies, and demonstrate their visible progress.  相似文献   

How do professional tennis players move? The perceptions of coaches and strength and conditioning experts     

Brandon Giles  Peter Peeling  Brian Dawson  Machar Reid 《Journal of sports sciences》2019,37(7):726-734

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The Rock     

George G. Dawson 《The Educational forum》2013,77(2)

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ARE STUDENTS PREPARED TO COMMUNICATE? A CASE STUDY OF AN AUSTRALIAN DEGREE COURSE IN BIOTECHNOLOGY     

Joanne Edmondston  Vaille Dawson  Renato Schibeci 《International Journal of Science and Mathematics Education》2010,8(6):1091-1108

Public concerns about biotechnology have resulted in greater attention being paid to the mechanisms by which biotechnology is communicated with non-scientists, including the provision of science communication training. As undergraduate and postgraduate courses form the foundation of the biotechnology sector by providing a pipeline of university graduates entering into the profession, it has been proposed that formal science communication training be introduced at this early stage of career development. Using an Australian biotechnology degree course as a case study, this paper examines science communication training within this course and the views of past and present students towards this training. Interviews were undertaken with 22 stakeholders in the case, including undergraduate lecturers (who also supervise postgraduate research students), doctoral candidates and biotechnologists recently graduated from the course. Few of the students felt the course provided them with any form of science communication training, let alone training in how to engage non-scientists. Many were unaware of the training available to them and few of the lecturers were able to identify where communication skills are taught within the course. A previous study of this case has also shown that biotechnology undergraduates taking this course do not value communication with non-scientists. Clearly, the current state of science communication training for these students needs to be improved if they are to enter the biotechnology workforce as able civic scientists. The findings of this study may be useful for other university biotechnology courses which have yet to integrate science communication training into their curriculum.  相似文献   

Renal lactate elimination is maintained during moderate exercise in humans     

Volianitis S  Dawson EA  Dalsgaard M  Yoshiga C  Clemmesen J  Secher NH  Olsen N  Nielsen HB 《Journal of sports sciences》2012,30(2):149-153

Reduced hepatic lactate elimination initiates blood lactate accumulation during incremental exercise. In this study, we wished to determine whether renal lactate elimination contributes to the initiation of blood lactate accumulation. The renal arterial-to-venous (a-v) lactate difference was determined in nine men during sodium lactate infusion to enhance the evaluation (0.5 mol x L(-1) at 16 ± 1 mL x min(-1); mean ± s) both at rest and during cycling exercise (heart rate 139 ± 5 beats x min(-1)). The renal release of erythropoietin was used to detect kidney tissue ischaemia. At rest, the a-v O(2) (CaO(2)-CvO(2)) and lactate concentration differences were 0.8 ± 0.2 and 0.02 ± 0.02 mmol x L(-1), respectively. During exercise, arterial lactate and CaO(2)-CvO(2) increased to 7.1 ± 1.1 and 2.6 ± 0.8 mmol x L(-1), respectively (P < 0.05), indicating a -70% reduction of renal blood flow with no significant change in the renal venous erythropoietin concentration (0.8 ± 1.4 U x L(-1)). The a-v lactate concentration difference increased to 0.5 ± 0.8 mmol x L(-1), indicating similar lactate elimination as at rest. In conclusion, a -70% reduction in renal blood flow does not provoke critical renal ischaemia, and renal lactate elimination is maintained. Thus, kidney lactate elimination is unlikely to contribute to the initial blood lactate accumulation during progressive exercise.  相似文献   

Physiological responses and time-motion characteristics of various small-sided soccer games in youth players     

Hill-Haas SV  Dawson BT  Coutts AJ  Rowsell GJ 《Journal of sports sciences》2009,27(1):1-8

The aim of this study was to examine acute physiological responses and time-motion characteristics associated with three different small-sided soccer game formats in youth players. Sixteen male soccer players aged 16.3+/-0.6 years (mean+/-s) completed three variations of a small-sided game (i.e. 2 vs. 2, 4 vs. 4, and 6 vs. 6 players) in which heart rate, rating of perceived exertion (RPE), blood lactate concentration, and time-motion characteristics were recorded. The pitch size was altered to keep the relative pitch area per player consistent for each game format. The 2 vs. 2 games exhibited greater blood lactate, heart rate, and RPE responses compared with 4 vs. 4 and 6 vs. 6 games (P<0.05). The players travelled less (P<0.05) distance at speeds of 0-7 km.h(-1) in the 4 vs. 4 compared with the 2 vs. 2 games (1128+/-10 m and 1176+/-8 m, respectively). Average maximal sprint distances above 18 km.h(-1) were lower (P<0.05) in 2 vs. 2 than in 4 vs. 4 and 6 vs. 6 games (11.5+/-3.9 m, 15.3+/-5.5 m, and 19.4+/-5.9 m, respectively), and in 4 vs. 4 compared with 6 vs. 6 games. The results show that as small-sided game formats decrease in size and relative pitch area remains constant, overall physiological and perceptual workload increases.  相似文献   

Different systems—Similar challenges? Factors impacting the motivation of German and U.S. teachers to become school leaders     

Dawson R. Hancock  Ulrich Müller 《International Journal of Educational Research》2009,48(5):299-306

In the United States and Germany, effective school leadership is pivotal to a school's success. Yet in each country, attracting and retaining qualified school leaders is a formidable challenge. This study compares the influence of possible motivators and inhibitors that impact teachers’ decisions to become principals in the two countries. Survey responses of 311 U.S. students in principal preparation programs in the United States and responses of 117 German students in similar programs in Germany indicate that many factors that motivate and inhibit U.S. and German teachers to become school leaders are similar. The results also reveal areas in which the U.S. and Germany may learn from each other regarding motivators and inhibitors to becoming school administrators.  相似文献