Percent in a Nutshell …

Ironically, the “learning of percent” is one of the most problematic aspects of school mathematics. In our view, these difficulties are not associated with the arithmetic aspects of the “percent problems”, but mostly with two methodological issues: firstly, providing students with a simple and accurate understanding of the rationale behind the use of percent, and secondly - overcoming the psychological complexities of the fluent and comprehensive understanding by the students of the sometimes specific wordings of “percent problems”. Before we talk about percent, it is necessary to acquaint students with a much more fundamental and important (regrettably, not covered by the school syllabus) classical concepts of quantitative and qualitative comparison of values, to give students the opportunity to learn the relevant standard terminology and become accustomed to conventional turns of speech. Further, it makes sense to briefly touch on the issue (important in its own right) of different representations of numbers. Percent is just one of the technical, but common forms of data representation: p% = p × % = p × 0.01 = p × 1/100 = p/100 = p × 10-2 "Percent problems” are involved in just two cases: I. The ratio of a variation m to the standard M II. The relative deviation of a variation m from the standard M The hardest and most essential in each specific "percent problem” is not the routine arithmetic actions involved, but the ability to figure out, to clearly understand which of the variables involved in the problem instructions is the standard and which is the variation. And in the first place, this is what teachers need to patiently and persistently teach their students. As a matter of fact, most primary school pupils are not yet quite ready for the lexical specificity of “percent problems”. ....Math teachers should closely, hand in hand with their students, carry out a linguistic analysis of the wording of each problem ... Schoolchildren must firmly understand that a comparison of objects is only meaningful when we speak about properties which can be objectively expressed in terms of actual numerical characteristics. In our opinion, an adequate acquisition of the teaching unit on percent cannot be achieved in primary school due to objective psychological specificities related to this age and because of the level of general training of students. Yet, if we want to make this topic truly accessible and practically useful, it should be taught in high school. A final question to the reader (quickly, please): What is greater: % of e or e% of Pi

On the relationship between cultural diversity and creativity in education:the moderating role of communal versus divisional mindset

We conducted an experimental study with the aim of testing certain conditions under which engaging with cultural diversity increases creativity among schoolchildren. Results obtained from a sample of 149 Italian elementary schoolchildren revealed that engaging with cultural diversity, operationalized by asking Italian children to work with immigrant children on a cooperative task, led to an increase in creativity. Furthermore, we found that this effect was only present when a communal but not a divisional mindset (emphasizing group distinctions) was present. We discuss theoretical and practical implications of findings.

Arquitetura escolar Infantil modulada e flexível

For many y ears, the federal government policy is to use project for in order to speed up the work for decreasing the elementary education deficit vacancy . In Natal municipality the schoolhouses for children, from 0 to 6 years of age are denom inated Muinicipality Centre for Elementary Education. The federal government provides capital for the news edifications by the program of government named PROINFÂNCIA. This program embraces three types of projects. Type “A” must be furnished by the interes ted municipality and approved by Education and Cultura Ministry. The type “B” is standard plan with capability to 120 schoolchildren in full - time or 240 in two turns and ground plot measuring 40 x 70m and the “type C” also a standart projects to 60 schoolc hildren in full - time or 120 in two turns and ground plot measuring 35 x 45m. Sometimes , due to scarcity of bigger ground plot s is the “type C” instead of “type B”, referring to offering vacancies. In this meaning, this study intend s to present the draft - project to elementary schoolhouse, modulated and flexible, emphasizing the children needs . Therefore, it was studied concept, school architecture, construction technology, reference study and visiting to MCEE Fernanda Jales (PROINFÂNC IA “tipo B”). However, the proposal synthesizes the draft - project by module, implanting in its totality or in parts, according to its necessity and lot cha racteristic.

Serious Game no tratamento de obesidade infantil: uma proposta de interação natural com monitoramento remoto

The number of overweight people has increased in the last few years. Factors such as attention to diet and changes in lifestyle are crucial in the prevention and control of obesity and diseases related to it. Experts believe that such actions are most effective when initiated during childhood, and that children raised in an environment that encourages physical activity ultimately become healthier adults. However, to arouse and maintain interest in such activities represent a major challenge, which are initially perceived as repetitive and boring, and, thus, soon abandoned. Computer games, traditionally seen as stimulants to a sedentary lifestyle are changing this perception using non-conventional controls that require constant movement of the player. Applications that combine the playfulness of such games to physical activity through devices, like Microsoft Kinect, might become interesting tools in this scenario, by using the familiarity of Natural User Interfaces along with the challenge and the fun of video games, in order to make attractive exercise routines for schoolchildren. The project carried out consists of an exergame composed of several activities designed and implemented with the participation of a Physical Educator, aimed at children between eight and ten years old, whose performance and progress can be remotely monitored by a professional via web interface. The application arising from this work was accompanied by tests with a group of graduating Physical Education students from the University of Rio Verde GO, and subsequently validated through questionnaires whose results are shown on this work.

Causes of Childhood Blindness in North Ghana: Results From a School for the Blind in Wa, Upper West Region

Background: Because most developing countries lack sufficient resources and infrastructure to conduct population-based studies on childhood blindness, it can be difficult to obtain epidemiologically reliable data available for planning public health strategies to effectively address the major determinants of childhood blindness. The major etiologies of blindness can differ regionally and intra-regionally. The objective of this retrospective study was to determine (1) the major causes of childhood blindness (BL) and severe visual impairment (SVI) in students who attend Wa Methodist School for the Blind in Upper West Region, North Ghana, and (2) any potential temporal trends in the causes of blindness for this region.

Methods: In this retrospective study, demographic data and clinical information from an eye screening at Wa Methodist School for the Blind were coded according to the World Health Organization/Prevention of Blindness standardized reporting methodology. Causes of BL and SVI were categorized anatomically and etiologically. We determined the major causes of BL/SVI over time using information provided about the age at onset of visual loss for each student.

Results: The major anatomical causes of BL/SVI among the 190 students screened were corneal opacity and phthisis bulbi (n=28, 15%), optic atrophy (n=23, 13%), glaucoma (n=18, 9%), microphthalmos (n=18, 9%), and cataract (n=18, 9%). Within the first year of life, students became blind mainly due to whole globe causes (n=23, 26%), cataract (n=15, 17%), and optic atrophy (n=11, 13%). Those who became blind after age one year had whole globe causes (n=26, 26%), corneal opacity (n=24, 24%), and optic atrophy (n=13, 13%).

Conclusion: At the Wa Methodist School for the Blind, the major anatomical causes of BL/SVI were corneal opacity and phthisis bulbi. About half of all students became blind within the first year of life, and were disproportionately affected by cataract and retinal causes in comparison to the other students who became blind after age one year. While research in blind schools has a number of implicit disadvantages and limitations, considering the temporal trends and other epidemiological factors of blindness may increase the usefulness and/or implications of the data that come from blind school studies in order to improve screening methods for newborns in hospitals and primary care centers, and to help tailor preventative and treatment programs to reduce avoidable childhood blindness in neonates and schoolchildren.

Tooth wear in Irish teenagers: a laboratory and epidemiological study

Aim: To investigate the characteristics, development and determinants of toothwear among Irish schoolchildren. Methods: A cross-sectional (examination at 16-years-old) and longitudinal (examinations at 5-,12-,14-years) study were conducted. Two indices were used to measure toothwear, children/parents completed a demographic profile and questionnaire on oral hygiene and dietary practices, health, and lifestyle in both studies. Saliva was collected from consenting 16-year-olds. The explanatory variables for the cross-sectional and longitudinal study were derived from children/parents responses. Differences in salivary profiles were determined for subsets; the protein concentration was determined with Bradford protein assay and protein carbonyl concentration (a protein oxidation marker) was determined spectrophotometrically. Gel-electrophoresis and mass spectrometry determined proteins and ion chromatography inorganic ions. Statistical significance was accepted at p<0.05. Results: At 16-years-old the prevalence of toothwear with dentine visible was 44%. No difference in salivary flow rates existed. In unstimulated saliva a higher mean, protein carbonyl (p<0.0001) and total calcium concentration (p<0.002) existed for the group with moderate toothwear. In stimulated saliva the moderate toothwear group had a lower mean protein concentration(p<0.0001). The 2-DE protein spots prepared for a sub-group differed between those with toothwear and without. Mass spectrometry, identified one of the different proteins as IgA. For 16-year-olds, the self-reported factors indicated that brushing after breakfast was associated with lower toothwear scores(p<0.03). Nail-biting, being asthmatic or reporting a dry mouth were associated with higher toothwear scores(all p<0.05). Eating an apple daily or less was associated with less toothwear(p<0.002). In the longitudinal study toothwear into dentine at age five or 12-years was associated with more toothwear at age 14(all p<0.05). Discussion: The results illustrate the multifactorial aetiology of toothwear. The biochemical and physical correlates of saliva with toothwear requires further research. Conclusion: The impact of previous toothwear, salivary, dietary and personal factors on toothwear in the early permanent dentition is demonstrated.

An exploration of the impact of the Green-Schools programme on the development of sustainable behaviours in the home

Concern for the sustainability of our planet is widespread. The ever-increasing economic activity and large scale industralisation our consumer society requires has increased concerns among academics, politicians, and consumers alike on natural resource depletion, waste management, dangers of toxic chemicals, and climate change. Human consumption is causing major issues for the space we inhabit. Much work has been done over the past four decades to remedy human impact on our environment at corporate, policy and consumer level. But concerns on our ability to progress the sustainability agenda remain. Consumer behaviour plays a pivotal role in sustainable development. In light of this, we need to explore and understand the ways in which consumption occurs in consumers lives, with an aim to changing behaviours that do not support the natural environment. Questions on how to change consumer behaviour dominate much of the literature on sustainable consumption, but substantial behaviour change among individuals has not occurred as predicted. Some focus has shifted to look at upstream interventions, such as education. The Green-Schools Programme (known internationally as Eco-Schools) is one such intervention. The aim of this thesis was to explore consumption in the context of the Green-Schools Programme. The main research question asks: in the context of the Green-Schools, how are sustainable behaviour practices developed in the home? The findings presented in this thesis show that sustainable behaviour has developed in the home from both internal and external factors, the Green-Schools effect being one such factor; the programme does influence behaviour in the home context to some degree. One of the main findings of this research indicates that schoolchildren are imparting ‘positive pester power’ on household behaviour practices and the majority of households are passively practicing sustainable consumption. These findings contribute to knowledge on sustainable consumption in the home context.

La exposición temporal temática como lugar de encuentro de la creatividad de los visitantes y del conservador

Descripción del proceso creativo del visitante adulto de tipo gran público y de los principios que guían la creatividad del conservador en el momento en que concibe una exposición temporal temática.

La lectura como actividad de ocio en escolares asturianos de 6º de primaria

Este trabajo analiza los resultados de una investigación sobre hábitos lectores del alumnado asturiano de 6º de Educación Primaria en su tiempo libre. El estudio utiliza una muestra de 324 escolares de centros públicos urbanos, con edades comprendidas entre los 11 y 12 años, para analizar datos relativos a la actitud hacia la lectura, la importancia de ésta entre las actividades de ocio y la frecuencia lectora.Más de la mitad de los escolares manifiesta una actitud bastante favorable hacia la lectura, y ésta es una de sus actividades de ocio habituales, aunque dedican más tiempo a ver televisión, practicar deportes, usar el ordenador y escuchar música. La mayoría son lectores frecuentes, aunque los no lectores y lectores ocasionales ascienden hasta un 12,96%. Los escolares encuestados leen principalmente libros, seguidos de revistas y cómics, mientras que poco más de un tercio dice leer periódicos frecuentemente.Esta investigación revela también algunas variaciones en actitud hacia la lectura y frecuencia lectora según el centro educativo de procedencia que se pueden relacionar con variables de tipo socio-económico. Además, se observan diferencias entre niños y niñas, pues éstas superan a sus compañeros varones en interés y frecuencia lectora, además de manifestar también divergencias en las preferencias de materiales de lectura.

Estado nutricional de escolares do semi-árido do nordeste brasileiro

SILVA, João B. da et al. Estado Nutricional de Escolares do Semi-Árido do Nordeste Brasileiro. Revista de Salud Pública, v. 11, n. 1, p. 62-71, 2009.

How the Pershore Plum Won the Great War

The First World War was won not just on the battlefields but on the Home Front, by the men, women and children left behind. This book explores the lives of the people of Pershore and the surrounding district in wartime, drawing on their memories, letters, postcards, photographs, leaflets and recipes to demonstrate how their hard work in cultivating and preserving fruit and vegetables helped to win the Great War. Pershore plums were used to make jam for the troops; but ensuring these and other fruits and vegetables were grown and harvested required the labour of land girls, Boy Scouts, schoolchildren, Irish labourers and Belgian refugees. When submarine warfare intensified, food shortages occurred and it became vital for Britain to grow more and eat less food. Housewives faced many challenges in feeding their families and so in 1916 the Pershore Women’s Institute was formed, providing many women with practical help and companionship during some of Britain’s darkest hours in history.

Estado nutricional de escolares do semi-árido do nordeste brasileiro

SILVA, João B. da et al. Estado Nutricional de Escolares do Semi-Árido do Nordeste Brasileiro. Revista de Salud Pública, v. 11, n. 1, p. 62-71, 2009.

Low efficacy of Mebendazole Against Hookworm in Vietman: Two Randomized Controlled Trials

Abstract. Vietnam is participating in a global de-worming effort that aims to treat 650 million school children regularly by 2010. The treatment used in Vietnam is single dose oral mebendazole (Phardazone®) 500 mg. We tested the efficacy of single dose mebendazole 500 mg in the therapy of hookworm infection in a randomized double-blind placebo-controlled trial among 271 Vietnamese schoolchildren. The treatment efficacy of single dose mebendazole in children did not differ significantly from placebo, with a reduction in mean eggs per gram of feces relative to placebo of 31% (95% CI - �9 to 56%, P = 0.1). In light of these findings we then carried out a similar randomized trial comparing triple dose mebendazole, single dose albendazole, and triple dose albendazole against placebo in 209 adults in the same area. The estimated reduction in mean post-treatment eggs per gram of feces relative to placebo was 63% (95% CI 30 - 81%) for triple mebendazole, 75% (47 - 88%) for single albendazole, and 88% (58Ã - 97%) for triple albendazole. Our results suggest that single dose oral mebendazole has low efficacy against hookworm infection in Vietnam, and that it should be replaced by albendazole. These findings are of major public health relevance given the opportunity costs of treating entire populations with ineffective therapies. We recommend that efficacy of anti-helminth therapies is pilot tested before implementation of national gut worm control programs.

AVALIAÇÃO DA EXPERIÊNCIA DE CÁRIE E QUALIDADE DE VIDA RELACIONADA À SAÚDE BUCAL DE ESCOLARES

Objetivo: Avaliar a relação entre experiência de cárie, qualidade de vida relacionada à saúde bucal (QVRSB) e fatores socioeconômicos em escolares de rede municipal. Métodos: Este estudo, de corte transversal, realizado em um município paulista a partir de um levantamento de saúde bucal do ano de 2012, incluiu 142 escolares com 12 anos completos para avaliação da QVRSB por meio do Child Perceptions Questionnaire (CPQ11-14) e de fatores socioeconômicos (escolaridade dos pais, renda, número de cômodos e número de pessoas que habitam o domicílio). A experiência de cárie foi avaliada e expressa pelo índice CPOD e ceo-d (número de dentes cariados, perdidos e obturados na dentição permanente e decídua, respectivamente). A análise consistiu de estatística descritiva, uso dos testes Qui-quadrado, Mann-Whitney e correlação de Spearman. Resultados: Do total, 58,5% (n=83) dos escolares apresentaram experiência de cárie (CPOD+ceo-d≥1), os quais também apresentaram maiores escores na percepção global em saúde bucal (2,6±0,9 x 2,1±0,8), na escala total (33,0±22,6 x 21,9±14,5) e nos domínios bem-estar emocional (11,4±8,6 x 6,6±5,8) e bem-estar social (7,7±8,2 x 4,4±4,9) quando comparados àqueles sem experiência de cárie. Observouse também correlação positiva significativa entre o número de pessoas que habitavam o domicílio e o índice CPOD/ceo-d (r=0,2670; p=0,003). Conclusão: A experiência de cárie relacionou-se com uma percepção negativa da saúde bucal, principalmente nos aspectos emocional e social, e com o número de pessoas que habitavam o domicílio.

Psichological and behavioral problems among left-behind adolescents. The case of Ecuador

Objetivo: evaluar el impacto de la migración de los padres en el bienestar psicológico de los ado - lescentes en abandono (LBA) en el Ecuador. Ado - lescentes abandonados son quienes permanecen en su país de origen, mientras su (s) padre (s) mi - graron. Métodos: en un estudio Transversal, 659 adoles - centes de edad escolar (43% mujeres, con una edad media de 13.9 +- 1.2) llenaron los cuestio - narios de fortalezas y dificultades (SDQ), y deter - minantes socio-demográficos. Las estadísticas fue - ron utilizadas para comparar el impacto de los determinantes socio-demográficos en el grupo de adolescentes en abandono (LBA) y adolescentes en no abandono (NLBA). Resultados: El 46% de los (LBA) puntuaron sig - nificativamente más alto en el cuestionario (SDQ) que los (NLBA), especialmente las niñas. Los de - terminantes socio-demográficos fueron significa - tivamente asociados con menos problemas psico - lógicos, por ejemplo, hablando acerca de problemas personales y migración después de la edad de 5 años en LBA. Conclusiones: la migración de los padres tiene un impacto en el bienestar psicológico de los adolescentes en abandono en el Ecuador. Las ca - racterísticas socio-demográficas influencian dicho impacto. Este artículo enfatiza un importante y hasta ahora ignorado problema de salud publica en el Ecuador. Esto subraya la necesidad del des - arrollo de políticas de salud y una profunda in - vestigación