Average acceleration and intensity gradient of primary school children and associations with indicators of health and well-being

ABSTRACT

Average acceleration (AvAcc) and intensity gradient (IG) have been proposed as standardised metrics describing physical activity (PA) volume and intensity, respectively. We examined hypothesised between-group PA differences in AvAcc and IG, and their associations with health and well-being indicators in children. ActiGraph GT9X wrist accelerometers were worn for 24-h·d^?1 over 7days by 145 children aged 9–10. Raw accelerations were averaged per 5-s epoch to represent AvAcc over 24-h. IG represented the relationship between log values for intensity and time. Moderate-to-vigorous PA (MVPA) was estimated using youth cutpoints. BMI z-scores, waist-to-height ratio (WHtR), peak oxygen uptake (VO₂peak), Metabolic Syndrome risk (MetS score), and well-being were assessed cross-sectionally, and 8-weeks later. Hypothesised between-group differences were consistently observed for IG only (p < .001). AvAcc was strongly correlated with MVPA (r = 0.96), while moderate correlations were observed between IG and MVPA (r = 0.50) and AvAcc (r = 0.54). IG was significantly associated with health indicators, independent of AvAcc (p < .001). AvAcc was associated with well-being, independent of IG (p < .05). IG was significantly associated with WHtR (p < .01) and MetS score (p < .05) at 8-weeks follow-up. IG is sensitive as a gauge of PA intensity that is independent of total PA volume, and which relates to important health indicators in children.     

Hidden in plain sight: findings from a survey on the multi-major professional writing course

In this article, the authors report on findings from a survey of writing instructors who teach the multimajor professional writing course (MMPW) across diverse institutional contexts. The authors marshal these findings to advance a series of arguments about the situation of the MMPW course in U.S. higher education.     

Building Calgary’s New Central Library

Abstract

This article summarizes the key elements that led to the successful 2018 launch of the New Central Library in Calgary, Alberta. The perfect marriage of innovative architecture and innovative programing would not have been possible without an innovative approach to planning. It began with a clearly articulated vision, bold leadership, and the coming together of a collaborative project team. A human-centered design process dovetailed with a flawlessly executed operational readiness plan to produce an overall visitor experience that has set a new standard for libraries—named by Time magazine as one of the “Greatest Places 2019” (Davies, 2019 Davies, W. (2019). Greatest places 2019 Central Library (2019). Retrieved from https://time.com/collection/worlds-greatest-places-2019/5654128/central-library-calgary-canada/ [Google Scholar]).     

Novice Elementary Teachers’ Developing Visions of Effective Science Teaching

Research in Science Education - Theories of how people learn and how science connects to students’ lives provide frameworks for exploring the development of teachers’ visions of...     

Improving the Measurement of School Climate Using Item Response Theory

The U.S. government has become increasingly focused on school climate, as recently evidenced by its inclusion as an accountability indicator in the Every Student Succeeds Act. Yet, there remains considerable variability in both conceptualizing and measuring school climate. To better inform the research and practice related to school climate and its measurement, we leveraged item response theory (IRT), a commonly used psychometric approach for the design of achievement assessments, to create a parsimonious measure of school climate that operates across varying individual characteristics. Students (n = 69,513) in 111 secondary schools completed a school climate assessment focused on three domains of climate (i.e., safety, engagement, and environment), as defined by the U.S. Department of Education. Item and test characteristics were estimated using the mirt package in R using unidimensional IRT. Analyses revealed measurement difficulties that resulted in a greater ability to assess less favorable perspectives on school climate. Differential item functioning analyses indicated measurement differences based on student academic success. These findings support the development of a broad measure of school climate but also highlight the importance of work to ensure precision in measuring school climate, particularly when considering use as an accountability measure.     

Construct Equivalence of PISA Reading Comprehension Measured With Paper‐Based and Computer‐Based Assessments

For many years, reading comprehension in the Programme for International Student Assessment (PISA) was measured via paper‐based assessment (PBA). In the 2015 cycle, computer‐based assessment (CBA) was introduced, raising the question of whether central equivalence criteria required for a valid interpretation of the results are fulfilled. As an extension of the PISA 2012 main study in Germany, a random subsample of two intact PISA reading clusters, either computerized or paper‐based, was assessed using a random group design with an additional within‐subject variation. The results are in line with the hypothesis of construct equivalence. That is, the latent cross‐mode correlation of PISA reading comprehension was not significantly different from the expected correlation between the two clusters. Significant mode effects on item difficulties were observed for a small number of items only. Interindividual differences found in mode effects were negatively correlated with reading comprehension, but were not predicted by basic computer skills or gender. Further differences between modes were found with respect to the number of missing values.     

EQUATIONS AND THE EQUAL SIGN IN ELEMENTARY MATHEMATICS TEXTBOOKS

To promote a relational understanding of the equal sign (=), students may require exposure to a variety of equation types (i.e., 3 = 8 - 5; 2 + 3 = 1 + 4; 9 - 3 = 6). The purpose of this study was to evaluate 8 elementary curricula for degree of exposure to equation types. Across 6 elementary grade levels, curricula were coded for the number of standard and nonstandard equation types appearing within the student textbook. Except in 1 of the 8 curricula, students typically do not receive exposure to nonstandard equation types that promote a relational understanding of the equal sign. An analysis of the accompanying teacher manual for each textbook suggests that students receive minimal instruction on relational definitions of the equal sign, with the majority of instruction occurring in grades K-2 and minimal instruction provided in grades 3-5.     

Piloting a Mathematics‐Writing Intervention with Late Elementary Students At‐Risk for Learning Difficulties

High‐stakes mathematics assessments require students to write about mathematics, although research suggests students exhibit limited proficiency on such assessments. Students with LD may have difficulties with writing, mathematics, or both. Researchers employed an intervention for teaching students how to organize mathematics writing (MW). Researchers randomly assigned participants (n = 61) in grades 3–5 to receive instruction in MW or information writing. Students receiving MW outperformed control students on a researcher‐developed measure of MW (d = 1.05). Component assessment revealed MW students improved in writing organization (d = 1.49) but not in mathematics content (d = 0.11 ns). Results also indicated MW students outperformed control on percentage of correct MW sequences (d = 0.82). Future directions for MW intervention development are discussed.     

Leveraging sport events for tourism gain in host cities: a regime perspective

ABSTRACT

Proponents often claim that bidding for and hosting sport events have an overall capacity to generate a variety of benefits for cities and regions. Despite limited empirical evidence to support these assertions, cities continue to vie for hosting rights. In an effort to maximise the benefits of hosting, host cities have adopted a strategic approach to event planning and management referred to as event leveraging. A critical concern raised in the leveraging literature is how event-related strategies fit with the broader tourism development agenda of cities and regions, and how they are implemented. This paper uses Urban Regime Theory (URT) to understand how and why cities seek to host events, and how the process of leveraging is undertaken to maximise the benefits of hosting. Viewing events and strategies in the context of regimes, highlights why some cities and regions have been successful in leveraging sport events for tourism gain over time and, importantly, why some have not. This paper synthesises the existing body of work on tourism-based sport event leveraging, identifies three ways academic research has explored leveraging, and uses regime theory as a lens to further our understanding of the leverage process in host cities.