Effects of Age,Walking Speed,and Body Composition on Pedometer Accuracy in Children     

Scott J. Duncan  Grant Schofield  Elizabeth K. Duncan  Erica A. Hinckson 《Research quarterly for exercise and sport》2013,84(5):420-428

The objective of this study was to investigate the effects of age group, walking speed, and body composition on the accuracy of pedometer-determined step counts in children. Eighty-five participants (43 boys, 42 girls), ages 5–7 and 9–11 years, walked on a treadmill for two-minute bouts at speeds of 42, 66, and 90 m·min^-1 while wearing a spring-levered (Yamax SW-200) and a piezoelectric (New Lifestyles NL-2000) pedometer. The number of steps taken during each bout was also recorded using a hand counter. Body mass index (BMI) was calculated from height and mass, and percentage of body fat (%BF) was determined using hand-to-foot bioelectrical impedance analysis. The tilt angle of the pedometer was assessed using a magnetic protractor. Both pedometers performed well at 66 and 90 m·min^-1, but undercounted steps by approximately 20% at 42 m·min^-1. Although age group, BMI, waist circumference, and %BF did not affect pedometer accuracy, children with large pedometer tilt angles (≥ 10°) showed significantly greater percent bias than those with small tilt angles (< 10°). We suggest that the style of waistband on the child's clothing is a more important determinant of tilt angle and thus pedometer accuracy than body composition. Our results also indicate that the NL-2000 pedometer provides similar accuracy and better precision than the SW-200 pedometer, especially in children with large tilt angles. We conclude that fastening pedometers to a firm elastic belt may improve stability and reduce undercounting in young people.  相似文献   

‘In the hands of the Receivers’: The Politics of Literacy in The Savage by David Almond and Dave McKean     

Erica Hateley 《Children‘s Literature in Education》2012,43(2):170-180

David Almond and Dave McKean??s The Savage is a hybrid prose and graphic novel which tells the story of one young man??s maturation through literacy. The protagonist learns to deal with the death of his father and his own ??savage?? self by writing a graphic novel. This article reads The Savage in the context of earlier, ??Northern?? literacy narratives??particularly Tony Harrison??s poem ??Them & [uz]?? and Barry Hines?? Kes??through the discourse of neoliberalism and the notion of the reluctant boy reader. It is suggested that Almond and McKean are influenced by currently dominant ideologies of gender and literacy.  相似文献   

Purposeful Reflections: Scaffolding Preservice Teachers' Field Placement Observations     

Erica R. Hamilton  Deborah Vriend Van Duinen 《The Teacher Educator》2013,48(4):367-383

ABSTRACT

In this qualitative study we examine preservice teachers' abilities to connect theory and practice through the use of a collaboratively developed field observation guide, namely the “Targeted Field Observation Guide.” The goal in developing and implementing this field-based observation guide was to help preservice teachers make explicit, purposeful connections between their required, course-embedded field placements and the secondary undergraduate content area literacy courses in which they were enrolled. Forty-three preservice teachers participated in this study and were enrolled in a large public university or a small private college in the Midwestern United States. Analysis of participants' weekly written reflections shared via computer-mediated communication (Google Docs) reveals that using a field-based observation guide further supported connections and conversations with peers regarding their field reflections and observations. However, many participants' reflections still demonstrated limited connections between theory and practice.  相似文献   

Monitoring the Effectiveness of the Wilson Reading System for Students with Disabilities: One District's Example     

Molly S. Stebbins  Melissa Stormont  Erica S. Lembke  David J. Wilson  Dana Clippard 《Exceptionality》2013,21(1):58-70

The current study detailed the manner in which one school district monitored the effectiveness of the Wilson Reading System for students with disabilities who were experiencing difficulty with reading. Effectiveness was measured by growth in the reading skills that have been documented to be critical for successful readers. Twenty fourth- and fifth-grade students participated in the Wilson Reading System for two consecutive years. Pretest and posttest reading scores from the Scholastic Reading Inventory and the Woodcock-Johnson III Tests of Achievement were examined. Results revealed gains in the students' reading comprehension skills as well as their overall basic reading skills, including word decoding and reading fluency. Limitations of this type of applied research are discussed.  相似文献   

Desiring development? Psychoanalytic contributions to antidevelopmental psychology     

Erica Burman 《International journal of qualitative studies in education》2013,26(1):56-74

This paper explores how psychoanalytic ideas might support a project of critiquing the developmental paradigm as it influences, and links, models of economic and individual development on which educational policy and practice rely. After outlining the conceptual domain and questions at issue, the paper rereads some key claims about Enlightenment and its relationship with representations of immaturity as inviting scope for reinterpreting contemporary intensifications of developmentalism. This provides some further rationale and focus for the turn to psychoanalysis as a critical conceptual and methodological resource (although with some key qualifications). Ideas drawn from feminist and postcolonial engagements with psychoanalysis are used to inform discussion of two indicative texts about childhood, drawing on contemporary Lacanian interpretations that are applied to address the problematic of childhood, before finishing with some speculations on alternative modes of engagement with Enlightenment and developmental approaches.  相似文献   

Supporting mathematics vocabulary instruction through mathematics curricula     

Erica M. Barnes  S. Joy Stephens 《Curriculum Journal》2013,24(3):322-341

Abstract

This study examines four of the most commonly-used core mathematics curricula in the USA for evidence of support for research-based instructional strategies for mathematics vocabulary in first and second grade. Content analyses of the teachers’ editions of two units for each grade level were analyzed per curriculum (n?=?16). Statistically significant differences among curricula were found for number of target words (range 6–51 per unit), level of difficulty of terms (basic to technical), and number of support strategies per word. Multiple means of representation varied in terms of verbal and non-verbal strategies for target terms. These differences indicate children are experiencing substantially different mathematics vocabulary learning opportunities, which may impact later mathematics achievement. Implications for practice, curriculum development, and future research are addressed.  相似文献   

Redefining Diversity: Political Responses to the Post-PICS Environment     

Genevieve Siegel-Hawley  Erica Frankenberg 《Peabody Journal of Education》2013,88(5):529-552

This article examines the federal and local political response to the Parents Involved decision. At the federal level, developments suggest a reaction to Parents Involved that, since President Obama has taken office, has been largely supportive of voluntary efforts to promote racial diversity. The administration has also been seeking to enforce more traditional race-based civil rights cases. Locally, even though reactions to the decision are as varied as the districts themselves, three broad categories of political responses emerge from our review of post–Parents Involved student assignment policies. They are the adoption of multifactor student assignment plans, the adoption of class-based (e.g., race-neutral) student assignments, and the elimination of efforts to pursue diversity. This article is particularly interested in examining the first two categories of responses. In doing so, we argue that some school districts are pursuing a redefined conceptualization of diversity in a challenging legal and political climate.  相似文献   

Case study of a problem-based learning course of physics in a telecommunications engineering degree     

Erica Macho-Stadler  Maria Jesús Elejalde-García 《European Journal of Engineering Education》2013,38(4):408-416

Active learning methods can be appropriate in engineering, as their methodology promotes meta-cognition, independent learning and problem-solving skills. Problem-based learning is the educational process by which problem-solving activities and instructor's guidance facilitate learning. Its key characteristic involves posing a ‘concrete problem’ to initiate the learning process, generally implemented by small groups of students. Many universities have developed and used active methodologies successfully in the teaching–learning process. During the past few years, the University of the Basque Country has promoted the use of active methodologies through several teacher training programmes. In this paper, we describe and analyse the results of the educational experience using the problem-based learning (PBL) method in a physics course for undergraduates enrolled in the technical telecommunications engineering degree programme. From an instructors’ perspective, PBL strengths include better student attitude in class and increased instructor–student and student–student interactions. The students emphasised developing teamwork and communication skills in a good learning atmosphere as positive aspects.  相似文献   

Contemporary approaches to learning science: technologically-mediated practical work     

Eileen Scanlon  Erica Morris  Terry di Paolo  Martyn Cooper 《Studies in Science Education》2013,49(1):73-114

This paper describes the current state of science education in Arab states and anticipates some of the challenges faced by those states as they reform their science education. After discussing problems of illiteracy, access and quality we provide contextual information about the structure of the educational systems and describe recent efforts to reform them. We focus on issues pertaining to science curriculum and textbooks, language, religion, student learning in science, science teacher education and science education research and summarise the challenges and opportunities for research faced in each area. We conclude the paper by proposing a set of policy and research recommendations that could aid in the development of lasting solutions for recurring problems.  相似文献   

Uncovering Students’ Environmental Identity: An Exploration of Activities in an Environmental Science Course     

Erica Blatt 《The Journal of environmental education》2013,44(3):194-216

This study at a public high school in the Northeastern United States explores how students’ environmental identities are affected by various activities in an Environmental Science course. Data was collected as part of an ethnographic study involving an Environmental Science teacher and her tenth–twelfth grade students. The results focus on interviews with 10 students and the teacher, conducted at three points during the semester-long course. The findings illuminate ways in which students’ identities (environmental and consumer-materialist) are affirmed or disconfirmed during classroom activities, the importance of establishing personal connections with environmental issues, and challenges related to the teaching of controversial environmental issues.  相似文献