Contextualizing Nature of Science Instruction in Socioscientific Issues

The purpose of this study was to investigate the effects of two learning contexts for explicit-reflective nature of science (NOS) instruction, socioscientific issues (SSI) driven and content driven, on student NOS conceptions. Four classes of 11th and 12th grade anatomy and physiology students participated. Two classes experienced a curricular sequence organized around SSI (the SSI group), and two classes experienced a content-based sequence (the Content group). An open-ended NOS questionnaire was administered to both groups at the beginning and end of the school year and analyzed to generate student profiles. Quantitative analyses were performed to compare pre-instruction NOS conceptions between groups as well as pre to post changes within groups and between groups. Both SSI and Content groups showed significant gains in most NOS themes, but between-group gains were not significantly different. Qualitative analysis of post-instruction responses, however, revealed that students in the SSI group tended to use examples to describe their views of the social/cultural NOS. The findings support SSI contexts as effective for promoting gains in students’ NOS understanding and suggest that these contexts facilitate nuanced conceptions that should be further explored.     

Comparison of Three Methods of Estimating Energy Expenditure: Caltrac,Heart Rate,and Video Analysis

Abstract

This study examined the accuracy of a new device (Caltrac) in estimating energy expenditure via acceleration measurements. Energy expenditure of 20 high school students during basketball class activity (average length = 37 min) was estimated using the Caltrac, heart rate recording, and video analysis. Heart rate recording and video analysis estimates of energy expenditure were determined from heart rate, caloric expenditure curves, and an activity rating scale, respectively. The following estimates of caloric expenditure (M ± SD) were found: heart rate recording = 196 ±73 > Caltrac = 163 ±49 > film analysis = 123 ± 30 kcal (p < .05). Laboratory simulations of the basketball activity revealed that the Caltrac energy expenditure was not significantly different from the actual energy expenditure (p > .05). The heart rate recording and video analysis estimates of energy expenditure were significantly (p < .05) higher and lower, respectively, than the actual energy expenditure. The Caltrac is a lightweight, low-cost device that provides a relatively accurate estimate of energy expenditure in free-ranging activities, such as basketball.     

Examination of the Validity of the Social Support Survey Using Confirmatory Factor Analysis

Abstract

The Social Support Survey (SSS), validated by Richman, Rosenfeld, and Hardy (1993), is a multidimensional self-report measure of social support tested with student athletes. The SSS contains eight dimensions of support. For each dimension of support the same four questions are posed. The SSS could, therefore, be scored in two ways: (a) to derive a score for the support dimensions; (b) to derive a score for the questions posed across all eight support dimensions. Confirmatory factor analyses of the SSS on 416 university athletes revealed poor fits to models for both the eight support dimensions and the four questions across all eight dimensions. This problem was clarified by using a multitrait-multimethod model, which led to improved model fit but revealed that most of the SSS items were two-dimensional. Caution should, therefore, be exercised in using the SSS as a measure of multidimensional social support.     

Fragments of your communication: Email,vmail, and fax

Abstract

How are new media, such as electronic mail, voice mail, and fax, used when people have access to several of them simultaneously? This paper reports findings from a field study of media use in four sizable subunits within two large organizations where most employees had access to email, vmail, and fax. Respondents tended to use multiple electronic media rather than relying on one. However, they also showed a tendency to prefer one medium for asynchronous communication and to use the others for occasional, specialized purposes. Further, there were considerable differences across subunits in typical media use patterns. Although respondents expressed strong desires for multimedia integration, this study suggests that technological integration may not necessarily result in seamless, collaborative work.     

Enigma Variations: Parsing the Riddle of Main Entry and the “Rule of Three” from AACR2 to RDA

ABSTRACT

In the ten years since the International Conference on the Principles and Future Development of AACR, long-standing debates have continued as to whether or not to have a “main entry,” and whether or not to exercise the rule of three to limit the number of headings or access points in certain cases. Recent proposals from the Joint Steering Committee for Development of RDA have recommended a change in “main entry” terminology to “primary access point,” and the elimination of the rule of three. This article explores how and why these shifts have occurred.     

Mountains to Molehills: The Past,Present, and Future of Cataloging Backlogs

While backlogs have existed in libraries and the literature that describes them, the decline in the acquisition of physical collections relative to digital resources, as well as the availability of cataloging copy has called into question the continued viability and relevance of arrearages. Yet, at a time of economic restraint, a rethinking of library operations is timely, if not urgent. What does nearly sixty years of research tell us about materials that are removed from cataloging workflow pending availability of a bibliographic record? This article analyzes the characteristics of, and reasons for, arrearages, and assesses approaches to reducing or eliminating backlogs.     

Supporting all children to reach their potential: practitioner perspectives on creating an inclusive school environment

This paper explores practitioner perspectives on effective inclusion within a school environment. Inclusion within school settings is more than children with a range of needs, including special educational needs (SEN) being taught together within a classroom. It is important that a school community recognises the uniqueness of each child and works together to address those individual needs, helping the child to reach their full potential. Data was gathered through interviews from fourteen members of teaching and support staff within one primary school in the North of England, identified by the Office for Standards in Education (Ofsted) as being an inclusive school. Findings report that in order to make inclusion effective for all children, practitioners acknowledged the importance of collaborative practice within the school, with outside agencies and parent partnership. A number of barriers to effective inclusion were also highlighted, including inadequate pre-service training, the national curriculum, mandatory testing at the end of key stages and school funding.     

How do children read multisyllabic words? Some preliminary observations

Multisyllabic words have been neglected in determining the relationship between spelling and sound in reading development. In a preliminary exploration of this topic, sensitivity to the phonological and orthographic composition of multisyllabic words and nonwords is examined amongst a group of English‐speaking 11‐year‐olds. The nature of the English language suggests that the syllable structure and stress pattern of words may influence the acquisition of higher‐order reading skills. A phonological awareness task confirms that syllable boundaries are ambiguous in certain English words. Furthermore, accuracy at reading multisyllabic words and nonwords appears sensitive to this ambiguity as a small advantage emerges for stimuli with more stable syllable structures. Nonword but not word reading is affected by syllable length, and nonwords are assigned stress patterns which appear to be related to the lexical syllables that were used to construct these items. These findings are related to current connectionist models of word recognition.     

Providing Quality Early Care and Education to Young Children Who Experience Maltreatment: A Review of the Literature

The current paper highlights the few studies that examine the role of early care and education on the developmental and early academic outcomes of children who experience maltreatment. First, we argue that children who experience maltreatment are at significant risk for poor developmental outcomes as a result of the chronic exposure to stress that is typical of this population. Recent evidence emphasizing the effects of stress on brain development is discussed. Next, the role of quality early care and education (ECE) experiences for children receiving services from child protective agencies are explored, underscoring three particular studies that examine the early educational experiences of children who receive child protective services as a result of maltreatment or exposure to violence. Finally, we focus on current approaches to improve the outcomes of children who experience maltreatment, within the context of ECE, and the implications for future research. Overall, this review serves as a call for international research efforts to explore the role of ECE on the developmental and early educational outcomes of this vulnerable population of children.