Elementary science textbooks: Their contents,text characteristics,and comprehensibility

The purpose of this article is to present findings from a systematic analysis of elementary-school science textbooks. Comparisons of content domains and vocabulary are presented for the Merrill (1982) and Silver-Burdett (1985) science programs, grades 1–5 as well as the fourth-grade Holt (1980) and fifth-grade McGraw-Hill (1974) texts. Analyses of how each publisher presents information, types of questions, and various text characteristics reveal striking differences between programs. Systematic comparisons of content domains between programs also reveal few instances of “inconsiderate” texts. The textbooks analyzed were selected because they are used in the three school districts participating in our longitudinal study. Results are discussed in light of the differences found between programs regarding textbook content and opportunity to learn, the greater amounts of text and activities within each program, and teachers' probable uses of textbooks, the long-term results of students' exposure to various textbooks, and the need for careful examination of materials in order to determine their quality.     

Supporting the kindergarten–primary school transition in Hong Kong: reform in a teacher training programme

ABSTRACT

The conflicting education values in Hong Kong kindergartens and primary schools pose various challenges to kindergarten teachers in providing pupils with a smooth transition to primary school which requires collaboration from schools and families. This study explored these challenges as well as the benefits of a professional teacher training programme. In-service teachers (N?=?35) and tutors (N?=?2) engaged in the module ‘The Social and Emotional Aspects of Teaching and Learning’ participated in this study. The trainees’ weekly reflective journals throughout the 22-week module were subjected to documentation analysis. Group interviews with the in-service teachers and individual interviews with the tutors were conducted on completion of the module. Findings reveal a gap between teacher training and providing pastoral care for pupils through supporting the social and emotional aspects of their families in Hong Kong, and indicated that traditional beliefs associated with the teaching profession should be widened. Meanwhile, counselling knowledge and skills should be contextualised and integrated into teacher training programmes.     

Public Perception of Invasive Plant Species: Assessing the impact of workshop activities to promote young students' awareness

Invasive species are one of the main threats to biodiversity worldwide. Even though they are identified and recognized as such by the Portuguese law, the majority of the population is not yet aware of this problem. Aiming to increase awareness about biological invasions among young students, a workshop on Invasive Plant Species was organized at the Botanical Museum of the University of Coimbra. A total of 170 teenager students from five schools participated in the workshop. Three activities were prepared, focusing on: (1) identification of invasive plants, (2) competition between native and invasive plants and (3) control of invasive plants. One year later, questionnaires were sent to the participants, aiming to appraise workshop effectiveness, and this questionnaire revealed that these students know more about invasive plant species than a comparable group of students that did not participate in the workshop. The results clearly showed that practical informal education activities may be effective in raising public awareness. Questionnaires were essential to evaluate the knowledge acquired and retained by the students during the workshop.     

Prediction of adult height in girls: The Beunen-Malina-Freitas method

Abstract

The purpose of this study was to validate and cross-validate the Beunen-Malina-Freitas method for non-invasive prediction of adult height in girls. A sample of 420 girls aged 10–15 years from the Madeira Growth Study were measured at yearly intervals and then 8 years later. Anthropometric dimensions (lengths, breadths, circumferences, and skinfolds) were measured; skeletal age was assessed using the Tanner-Whitehouse 3 method and menarcheal status (present or absent) was recorded. Adult height was measured and predicted using stepwise, forward, and maximum R ² regression techniques. Multiple correlations, mean differences, standard errors of prediction, and error boundaries were calculated. A sample of the Leuven Longitudinal Twin Study was used to cross-validate the regressions. Age-specific coefficients of determination (R ²) between predicted and measured adult height varied between 0.57 and 0.96, while standard errors of prediction varied between 1.1 and 3.9 cm. The cross-validation confirmed the validity of the Beunen-Malina-Freitas method in girls aged 12–15 years, but at lower ages the cross-validation was less consistent. We conclude that the Beunen-Malina-Freitas method is valid for the prediction of adult height in girls aged 12–15 years. It is applicable to European populations or populations of European ancestry.     

Using social semiotics to prepare mathematics teachers to teach for social justice

In this article, we propose that guiding teachers to examine the regulative/discursive norms of school mathematics with tools derived from social semiotics can serve two related goals: (1) to deconstruct the “math is math period!” disposition in prospective teachers by promoting their critical understanding of the symbolic domination work they often unknowingly perform and (2) to reconstruct a more socio-political disposition by equipping them with tools for decoding the dominant discursive practices of school mathematics. After reviewing research on the social semiotics of mathematics education, we discuss two sample teacher education tasks designed with the above goals in mind.     

Parents’ and teachers’ beliefs about children’s school readiness in a high-need community

This study compared the beliefs of preschool teachers, kindergarten teachers, and parents in one mostly Hispanic and Black high-need urban school district to learn their views of what children should know and be able to do at kindergarten entry. Beliefs regarding the importance of 12 school readiness “resources” were assessed with the CARES survey designed for this study. Parents held remarkably similar beliefs, regardless of ethnicity or education. Parents and teachers also agreed that children must be healthy and socially competent, and be able to comply with teacher authority, although parents rated this latter resource higher. However, parents rated all classroom-related readiness resources as more important than teachers did. They believed it was necessary for a child to be able to communicate in English and to have basic knowledge and skills, which was more important than a child’s approach to learning. Preschool teachers also believed that knowledge was more important than kindergarten teachers did. Directions for further research and implications for policy and practice are discussed.     

Perceived neighborhood environmental characteristics and different types of physical activity among Brazilian adolescents

Little is known about the association between environmental characteristics and types of physical activity in adolescents in a Latin American context. The aim of this study was to examine the association between perceived neighborhood environmental characteristics and different types of physical activity in 2,874 adolescents from Joao Pessoa, Paraiba State, Northeastern Brazil. The types of activity measured by questionnaire (≥10 min/day) included sports, physical exercises, active commuting and recreational activities. Neighborhood characteristics were measured by a 15-item scale. Multilevel analyses showed that adolescents who reported “having places they liked to go to” (OR = 1.41; 95%CI: 1.10–1.79) and “places with opportunities to practice” (OR = 1.29; 95%CI: 1.01–1.65) were more likely to play sports. “Seeing interesting things while walking” (OR = 1.24; 95%CI: 1.01–1.53) and “Seeing other adolescents engaged in physical activity” (OR = 1.47; 95%CI: 1,05–2,06) were associated with exercises. “Seeing other adolescents engaged in physical activity” (OR = 1.47; 95%CI: 1.18–1.82), “the neighborhood is not violent” (OR = 1.29; 95%CI: 1.04–1.60) and “having places they like to go to” (OR = 1.59; 95%CI: 1.13–2.25) were positively associated and “places with opportunities to practice” (OR = 0.79; 95%CI: 0.63–0.98) inversely related to active commuting. “Seeing other adolescents engaged in physical activities” (OR = 1.31; 95%CI: 1.05–1.63) and “seeing interesting things while walking” (OR = 1.26; 95%CI: 1.02–1.56) were associated with recreational activities. Neighborhood environmental characteristics associated with the physical activity vary with the type of practices adopted by adolescents.