Comparison of physiological responses to graded exercise test performance in outrigger canoeing

The aim of this study was to establish a graded exercise test protocol for determining the peak physiological responses of female outrigger canoeists. Seventeen trained female outrigger canoeists completed two outrigger ergometer graded exercise test protocols in random order: (1) 25 W power output for 2 min increasing by 7.5 W every minute until exhaustion; and (2) 25 W power output for 2 min increasing by 15 W every 2 min to exhaustion. Heart rate and power output were recorded every 15 s. Expired air was collected continuously and sampled for analysis at 15-s intervals, while blood lactate concentration was measured immediately after and 3, 5, and 7 min after exercise. The peak physiological and performance variables examined included peak oxygen uptake (VO2peak), minute ventilation, tidal volume, ventilatory thresholds 1 and 2, respiratory rate, respiratory exchange ratio, heart rate, blood lactate concentration, power output, performance time, and time to VO2peak. There were no significant differences in peak physiological responses, ventilatory thresholds or performance variables between the two graded exercise test protocols. Despite no significant differences between protocols, due to the large limits of agreement evident between protocols for the peak physiological responses, it is recommended that the same protocol be used for all comparison testing to minimize intra-individual variability of results.     

Promoting intercultural friendship among college students

This study assessed the efficacy of a semester-long buddy project in facilitating intercultural friendship development. Results of pre-, post-, and follow-up surveys show significant improvements in knowledge and attitude; correlations between post-project knowledge, attitude, and interest in continued contact; and correlations between interest in continued contact and actual contact in the follow up. The majority of the participants evaluated the project as effective for friendship formation. Of the follow-up respondents, 23% developed friendships with their former buddies. The project serves as an example for assignments with the potential for friendship development, which is essential for optimal intergroup contact.     

Learning to Lead: an Approach to Mathematics Teacher Leader Development

This paper describes a partnership between a university and an urban school district, formed with a goal of preparing mathematics teacher leaders to conduct professional development (PD) at their schools. The university and district partners worked together to achieve the district’s mission of providing every student with high-quality instruction and equitable learning opportunities in mathematics by building the district’s capacity to conduct school-based PD for mathematics teachers. Given the power of school-based subject-specific PD for improving instructional quality, we worked with Teacher Leaders from participating schools to prepare and support them to lead PD workshops at their schools. In this paper, we examine how Teacher Leaders learn and adapt key elements of a PD model over three school years through the lenses of Prediger et al.’s Three-Tetrahedron-Model (2019) and the university’s Learning to Lead model. Over 3 years, we see that Teacher Leaders use the key structures of the PD model; make adaptations in response to school goals, interests, and priorities; and gain confidence in their work with colleagues. By viewing the adaptations through the lens of pedagogies of practice as well as the relationships illustrated by the 3-T model, this work offers insights into the complexities of teacher leadership development.

     

Parent Support for Children’s Physical Activity: A Qualitative Investigation of Barriers and Strategies

Purpose: Parents play an important role in supporting children’s physical activity (PA) behavior. Parent PA support is a behavior unto itself that has been examined within the framework of an adapted theory of planned behavior (TPB). The primary purpose of this research was to identify key barriers to parent PA support to understand perceptions of control in relation to parent PA support. The second purpose of this research was to identify potential strategies to enhance parent PA support via enhanced perceived behavioral control. Method: Focus groups were conducted with parents (N = 21) of children aged 5 to 11 years old. A deductive content analysis was employed to analyze the data guided by an adapted TPB. Results: Themes related to barriers included parents’ motivation, affective experiences in providing PA support, and control factors (e.g., cost, time, safety concerns, screen). Themes related to potential strategies included opportunities for participation and improved affective experiences for parents, community parenting, and self-regulatory strategies. Conclusion: The identification of specific barriers to parent PA support can guide the development of interventions to facilitate parent PA support. Informational, programming, and self-regulatory training interventions may be useful in enhancing parent support.     

The application of science education theories: A reply to Stephen P. Norris and Tone Kvernbekk

Norris and Kvernbekk (1997) deal with questions which arguably should be central to the field of science education: namely, what constitutes normative goal-directed theories in science education and what bearing does the nature of normative goal-directed educational theories have on their application to practice. The response is in sections. First, I present a number of general comments on the characteristics of normative goal-directed theories as specified by Norris and Kvernbekk. Second, I present my argument in outline about the nature of our theory. Third, I focus on the authors' interpretation of our work (as represented in the three articles) in terms of the characteristics of normative goal-directed theories. Fourth, I respond to their criticisms of our theory which they put forward as a result of their analysis. (The authors' analysis of our theory is technical and closely argued. To respond appropriately involves necessarily paying attention to technical details of the ways they interpreted our theory.) Fifth, the response considers a number of additional points relating to the authors' arguments which go beyond or extend their formulation of normative goal-directed theories. In particular, attention is given to the nature of interpretive theory and to the role of teachers in the application of a normative goal-directed theory. The sixth section addresses the central issue of whether, based on the authors' elaboration of normative goal-directed theories, the theory of Driver and associates constitutes such a theory. Finally, I summarize the contributions that the article makes. © 1997 John Wiley & Sons, Inc. J Res Sci Teach 34: 1007–1018, 1997.     

Correlating Spatial Ability With Anatomy Assessment Performance: A Meta-Analysis

Interest in spatial ability has grown over the past few decades following the emergence of correlational evidence associating spatial aptitude with educational performance in the fields of science, technology, engineering, and mathematics. The research field at large and the anatomy education literature on this topic are mixed. In an attempt to generate consensus, a meta-analysis was performed to objectively summarize the effects of spatial ability on anatomy assessment performance across multiple studies and populations. Relevant studies published within the past 50 years (1969–2019) were retrieved from eight databases. Study eligibility screening was followed by a full-text review and data extraction. Use of the Mental Rotations Test (MRT) was required for study inclusion. Out of 2,450 screened records, 15 studies were meta-analyzed. Seventy-three percent of studies (11 of 15) were from the United States and Canada, and the majority (9 of 15) studied professional students. Across 15 studies and 1,245 participants, spatial ability was weakly associated with anatomy performance (r_pooled = 0.240; CI at 95% = 0.09, 0.38; P = 0.002). Performance on spatial and relationship-based assessments (i.e., practical assessments and drawing tasks) was correlated with spatial ability, while performance on assessments utilizing non-spatial multiple-choice items was not correlated with spatial ability. A significant sex difference was also observed, wherein males outperformed females on spatial ability tasks. Given the role of spatial reasoning in learning anatomy, educators are encouraged to consider curriculum delivery modifications and a comprehensive assessment strategy so as not to disadvantage individuals with low spatial ability.     

Teaching communication in general science degrees: highly valued but missing the mark

Abstract

Effective communication of science is a ubiquitous learning outcome for most science degrees, and a national threshold learning outcome for science in Australia. Evidence suggests that employers and academics are dissatisfied with the communication skills of many science graduates. Our study examines communication tasks used in summative assessment in bachelor of science (BSc) degrees. We compiled public information for all units of study from the BSc programmes at five research-intensive Australian universities. Our analysis suggests that science academics place high value on developing the ability of students to communicate, with 66% of all science units (n?=?1225) using one or more communication tasks as assessment (mean weighting 44%). However, opportunities for students to communicate in a variety of contexts are lacking. We found that communication tasks from eight majors (n?=?683) across the five universities addressed a very narrow range of contexts; an audience of scientists (including students) in the same discipline (97%), in the mode of traditional writing (79%) and for the purpose of interpreting and presenting results (66%). As such, assessment practice does not match the variety of contexts required by the Australian threshold learning outcomes or guiding statements in other countries. We identify opportunities and offer practical recommendations to help correct this mismatch.     

Do the Colors of Educational Number Tools Improve Children’s Mathematics and Numerosity?

This study examined how colored educational tools improve children’s numerosity (“number sense”) and/or mathematics. We tested children 6–10 years (n = 3,236) who had been exposed to colored numbers from the educational tools Numicon (Oxford University Press, 2018) or Numberjacks (Ellis, 2006), which map colors to magnitudes or Arabic numerals, respectively. In a free association task pairing numbers with colors, a subset of children spontaneously provided colors matching one of these schemas. These children, who had internalized Numicon (colored magnitude), showed significantly better numerosity but not mathematics compared to peers. There was no similar benefit from internalizing Numberjacks (colored numerals). These data support a model in which colored number tools provide benefits at different levels of numerical cognition, according to their different levels of cross-modal mappings.     

‘Certified to make a difference’: the motivation and perceptions of newly qualified early years teachers in England

The last 20 years have brought numerous workforce reforms to the early years sector, enacted in the name of professionalisation, including the recent introduction of a new postgraduate qualification, the Early Years Teacher Status. This article features data from interviews with 22 participants who had just completed this award and situates their views in the relevant policy context and alongside a discussion of what it means to professionalise the early years sector and create a graduate led workforce. The data support findings from similar studies of Early Years Professionals, namely that the interviewees are passionate about working with young children. They view the sector as in need of change, and themselves as potential leaders and agents of change. The participants endorse the view that up-skilling the workforce is essential to the professionalisation of the sector and improving the quality of early years education.