Understanding teacher instructional change: the case of integrating NGSS and stewardship in professional development

The environmental education (EE) field has encountered persistent challenges in fostering the integration of EE practices in public schools, a challenge that may be addressed through integration of EE with the Next Generation Science Standards (NGSS) in the United States. In addition to the potential for fostering EE, the integration of EE and NGSS may provide a unique set of conditions for understanding how and why teachers shift their practice to incorporate more EE in their classrooms. Using a mixed methodology research design, this study examines the outcomes and processes of a professional development institute that integrated NGSS and student-driven environmental stewardship. This study provides evidence that integrating NGSS Science and Engineering Practices with stewardship may help infuse EE into classrooms. The research also contributes to theoretical understanding of the processes by which professional development shapes teacher change within an organizational context. Specifically, teacher instructional change was predicated on a shift in their beliefs that stewardship was possible in a standards and accountability-based educational context. The requisite shift in beliefs came about through the expectations and supportive resources provided by the professional development, teacher observation of student engagement, and the justification NGSS integration provided for stewardship activities.     

Online student evaluation improves Course Experience Questionnaire results in a physiotherapy program

This paper reports the use of an online student evaluation system, Course Experience on the Web (CEW), in a physiotherapy program to improve their Course Experience Questionnaire (CEQ) results. CEW comprises a course survey instrument modelled on the CEQ and a tailored unit survey instrument. Closure of the feedback loop is integral in the CEW system. Analysis of the data shows that the students’ evaluation in their final year of the program is closely correlated with their CEQ results. Increases in the CEQ scores from 2001–04 included an increase in the Good Teaching Scale (27.5), Generic Skills Scale (10.3) and Overall Satisfaction Index (29.3). By using CEW, academics at the School of Physiotherapy were able to determine students’ perceptions during the course, make changes to teaching and learning, where appropriate, in a timely manner and, as a result, the CEQ scores were improved markedly.     

Use of the decomposition technique to test the educational screening hypothesis

The principal issue addressed in this article is whether or not education directly creates productivity and earnings as taught by traditional human capital theory. If not, an alternative argument could be that employers use education as a screening device to select employees. Employing the decomposition technique to compare income for self-employed and private sector employees, evidence is presented which rejects the screenist theory.     

Learning,teaching, and constructing identities: ESL pre-service teacher experiences during a short-term international experience programme

Short-term international experience programmes are a common element of English second language (ESL) teacher education in many countries. This study problematizes the belief that such programmes necessarily result in beneficial changes in pre-service teachers thinking about themselves as teachers – their beliefs, habits, and values – by exploring the experiences of eight pre-service ESL teachers from Hong Kong as they undertook a short-term international experience programme in Australia. Drawing on a theory of identity construction, the findings suggest that identity conflicts impacted how the student teachers experienced this programme as they struggled to reconcile past, present, and future trajectories of teacher identity. In particular, the student teachers constructed rigid divisions between different types of teachers and teaching they experienced at home and abroad. These divisions were reflected in antagonistic relations between the types of English language teachers and teaching they aligned their own teaching activities and practices with and the teacher identities that they perceived to be available to them within the Hong Kong education system. Implications for addressing such identity conflicts throughout international experience programmes are considered and implications for future research are discussed.     

The Politics of Teacher Evaluation: A Case Study of New System Design and Implementation

The purpose of this article is to describe the political aspects of the implementation of a new teacher evaluation system through the means of an observational case study. Designing and implementing a systemwide reform such as that involved in a new teacher evaluation system often is emotionally laden and politically challenging. Technical expertise is required in defining what constitutes good teaching and selecting appropriate methods for collecting accurate data. Equally important, however, is a sophisticated political understanding of how to structure the development and implementation processes to optimize the support of various stakeholders for the new evaluation system. In addition to describing the phenomenon, policy and practice recommendations will be offered to facilitate the negotiation of such a change.     

The acute effects of bodyweight suspension exercise on muscle activation and muscular fatigue

This investigation examined effects of two exercise modes (barbell, BB; bodyweight suspension, BWS) on muscle activation, resistance load, and fatigue. During session one, nine resistance-trained males completed an elbow flexion one-repetition maximum (1RM). During sessions two and three, subjects completed standing biceps curls to fatigue at 70% 1RM utilizing a randomized exercise mode. Surface electromyography (sEMG) recorded muscle activation of the biceps brachii, triceps brachii, anterior deltoid, posterior deltoid, rectus abdominis, and erector spinae. BWS resistance load was measured using a force transducer. Standing maximal voluntary isometric contractions of the elbow flexors recorded at 90° were used to determine the isometric force decrement and rate of fatigue (ROF) during exercise. sEMG and resistance load data were divided into 25% contraction duration bins throughout the concentric phase. BWS resulted in a 67.7?±?7.4% decline in resistance load throughout the concentric phase (p?≤?0.05). As a result, BB elicited higher mean resistance loads (31.4?±?4.0?kg) and biceps brachii sEMG (84.7?±?27.8% maximal voluntary isometric contractions, MVIC) compared with BWS (20.4?±?3.4?kg, 63.4?±?21.6% MVIC). No difference in rectus abdominis or erector spinae sEMG was detected between exercise modes. Isometric force decrement was greater during BWS (?21.7?±?7.0?kg) compared with BB (?14.9?±?4.7?kg); however, BB (?3.0?±?0.8?kg/set) resulted in a steeper decline in ROF compared with BWS (?1.7?±?0.6?kg/set). The variable resistance loading and greater isometric force decrement observed suggest that select BWS exercises may resemble variable resistance exercise more than previously considered.     

Habitual physical activity levels and sedentary time of children in different childcare arrangements from a nationally representative sample of Canadian preschoolers

BackgroundChildren spend substantial time in childcare, and the reasons parents choose a particular childcare type may differ by family. However, little is known about how childcare type influences habitual (full day) activity levels among children. Therefore, exploring patterns between childcare type and habitual physical activity (PA) (i.e., light, moderate-to-vigorous PA (MVPA), and total PA) and sedentary time (ST) in young Canadian children is needed.MethodsA nationally representative sample of preschoolers from Cycles 3 and 4 of the Canadian Health Measures Survey was used in this cross-sectional study. Childcare type (e.g., center-based childcare, home-based childcare, home with parent, kindergarten) was reported by parents. Preschoolers wore an Actical accelerometer for 7 days. Device and population-spcific cut-points were applied to delineate PA intensities and ST. Population means and sample totals were calculated to examine average daily and hourly rates of activity.ResultsPreschoolers’ rates of MVPA and total PA from the 4 childcare arrangements ranged from 65.99 min/day to 74.62 min/day (5.48–6.18 min/h) and 274.20 min/day to 281.66 min/day 22.69–23.21 min/h), respectively, while ST ranged from 443.13 min/day to 460.57 min/day (36.80–37.31 min/h). No significant differences were observed in daily or hourly rates of activity.ConclusionThis study provides a snapshot of the levels of PA and ST among preschoolers in various childcare settings at a national level, with no differences observed in habitual activity levels based on childcare enrollment. Additional research is needed to clarify the relationship between young children's PA and childcare type, with consideration given to the quality of the childcare settings.     

Functions for school psychologists in community colleges

School psychologists are trained as developmental specialists. There is a tendency to assume that they function only in the K-12 educational system. In this paper, school psychology is presented as a viable resource for service to special needs students in a postsecondary setting, including those in the community college system. Student, teacher, and administrator perceptions of educational needs are examined, and the argument is made that no one professional in the community college currently meets all the needs discussed.     

Muscle co-activation and its influence on running performance and risk of injury in elite Kenyan runners

The relationship between muscle co-activation and energy cost of transport and risk of injury (initial loading rate and joint stiffness) has not been jointly studied. Fourteen elite Kenyan male runners were tested at two speeds (12 and 20 km · h^?1), where oxygen consumption, kinematic, kinetic and electromyography were recorded. Electromyography of seven lower limb muscles was recorded. Pre-activation and ground contact of agonist:antagonist co-activation was determined. All muscles displayed higher activity during pre-activation except rectus femoris (RF). Conversely, no differences were found during ground contact except for higher biceps femoris (BF) at 20 km · h^?1. Knee stiffness was correlated to RF–BF co-activation during both pre-activation and ground contact at both running speeds. However, energy cost of transport was only positively correlated to the above-mentioned muscle pairs at 20 km · h^?1 (r = 0620, P = 0.032; r = 0.682, P = 0.015, respectively). These findings emphasise the influence of neuromuscular control and performance and its support to musculoskeletal system to optimise function and modulate risk of injury. Further, neuromuscular activity during terminal swing is also important and necessary to execute and maintain performance.