Physical Similarity and Young Children''s Understanding of Scale Models

Young children's understanding of the correspondence between a scale model and a larger space is affected by the degree of physical similarity between the 2 spaces. In 4 studies, children between 2.5 and 3.5 years of age watched as a miniature toy was hidden somewhere in a scale model of a room. They were then asked to find an analogous toy that was hidden in the corresponding place in the room itself. The effects of different levels of 3 types of physical similarity were investigated. In general, the children's retrieval scores increased as a function of increasing similarity, although younger children required a higher degree of similarity to appreciate the model-room correspondence than did older children. Some types of similarity were more important than others: The level of similarity between the objects within the 2 spaces and of the overall size of the spaces both had large effects on the children's performance. Similarity presumably affects accessibility, the likelihood that children's representation of one space will provide access to their representation of the other space.     

Spaces of possibility in pre-service teacher education

Pre-service teacher education is a spatialised enterprise. It operates across a number of spaces that may or may not be linked ideologically and/or physically. These spaces can include daily practices, locations, infrastructure, relationships and representations of power and ideology. The interrelationships between and within these (sometimes competing) spaces for pre-service teachers will influence their identities as teachers and learners across time and space. Pre-service teachers are expected to make the connections between these often-contradictory spaces with little or no guidance on how to negotiate such complex relationships. These are difficult spaces, yet the slippages and gaps between these spaces offer generative possibilities. This paper explores these spaces of possibility for pre-service teacher education, and uses the spatial theories of Lefebvre and Foucault to argue that critical reflective practice can be used to create Soja’s ‘thirdspace’ for reconstructing future practice.     

单锥上第一类Siegel域的扩充空间

本文给出一类齐性复解析流形及某些子流形,并应用它实现陆启铿、钟家庆在［１］中给出的单锥上的第一类Ｓｉｅｇｅｌ 域的扩充空间。从扩充空间上的运动群在超圆上的限制得到单锥上第一类Ｓｉｅｇｅｌ 域的仿射自同胚群     

A Time and a Place for Everything: A Discrete Systems Perspective on the Role of Children's Rough-and-Tumble Play in Educational Settings

This paper emphasizes the following points regarding the appropriate role of rough-and-tumble play (R & T) in educational settings. (1) There has been an important secular trend toward an increasing importance of adult supervision of children's play. As a result, children's R & T must be considered in the context of social values regarding the expected developmental significance of children's play. (2) R & T is an aspect of evolved systems that propel the children into enthusiastic interaction with their environment and can be reasonably supposed to have several beneficial influences on children's cognitive and social development. (3) R & T can be distinguished from aggression, and adult supervised R & T is potentially an important arena for learning the limits of appropriate R & T. (4) It is suggested that supervised educational settings should be concerned with socializing several discrete systems that underlie children's development, including the present emphasis on socializing children to be able to focus attention, inhibit behavior, and be neat and orderly. However, the purpose of the present paper is to present a case for socializing the systems underlying stimulus seeking, extroversion, sociability, and intellectual creativity as well.     

The Relationship of Family Variables to Head Start Children's Preacademic Competence

This study was conducted with a sample of 93 Head Start children and their mothers. It examined the contribution of family variables (i.e., parenting style, home literacy activities, maternal school involvement, and maternal expectations) to children's preacademic competence as defined by four criteria: (a) performance on a standardized achievement battery; (b) teachers' ratings of children's cognitive competence; (c) children's self-ratings of competence; and (d) maternal reports of children's early school adjustment. In exploring these relationships the study controlled for the influence of variables (i.e., child and maternal cognitive variables, child sex, as well as risk due to daily stress) that have been suggested to influence directly, or indirectly, maternal involvement and child competence. Hierarchical regression analyses indicated that educational expectations, home literacy variables, and school involvement were predictive of children's competence even after accounting for the effects of maternal education, child IQ, and daily stress. Specifically, maternal educational expectations were predictive of preacademic achievement and teacher-rated competence. Maternal engagement in educational activities at home was predictive of children's self-efficacy beliefs and school adjustment. Maternal school involvement was also predictive of school adjustment.     

Designing classroom spaces: Making the most of time

Research has shown that children's perception of the space around them is related to the quality of their play behaviors. Summaries of three research studies with preschoolers show that when children perceive themselves large, they enter complex play more quickly and stay for longer periods of time. The quality of children's play behavior changed when children played in small spaces. In these three studies, space was altered by: (a) creating a screened structure in the classroom, (b) changing the scale of the patterns on the wall of a learning center, and (c) altering the size of the block center. Each study is summarized and suggestions for designing classroom spaces are included. Implications of this program of research for increasing attention span and augmenting complex play and problem solving are discussed.     

齐型空间上Herz空间中的分数次积分算子

本文定义了一类齐型空间上的Herz空间，并研究了定义在这些空间中的分数次积分算子的性质．     

Linkages between children's and their friends' social and physical aggression: evidence for a gene-environment interaction?

Based on a sample of 406 seven-year-old twins, this study examined whether exposure to friends' social or physical aggression, respectively, moderates the effect of heritability on children's own social and physical aggression. Univariate analyses showed that children's own social and physical aggression were significantly explained by genetic factors, whereas friends' social and physical aggression represented "true" environmental factors that were unrelated to children's genetic dispositions. Multivariate analyses further suggested a possible gene-environment interaction in the link between friends' and children's physical aggression but not in the link between friends' and children's social aggression. Instead, friends' social aggression was directly related to children's social aggression, in addition to genetic effects on this behavior. Theoretical and practical implications of these results are discussed.     

父母在儿童游戏(玩耍)中作用的文化差异性

尽管玩耍被认为是很普遍的,但在特定的社会中对游戏的关注依赖于对儿童天性的文化信念和父母对儿童的特别要求。研究者发现一些父母认为他们自己更适合做他们孩子玩耍的伙伴,但是在一些团体中则表明年长的兄弟或姐妹才是儿童游戏的重要伙伴。由于父母在玩耍活动进程中的直接参与,父母在玩耍中经常会为儿童提供支持和帮助。     

Caldero＇n-Zygmund算子在齐型空间中弱Morrey-Herz空间的有界性

证明了Caldero＇n-Zygmund算子在齐型空间中弱胁胞尹肌陀空间的有界性．     

Stability of overt Type A behaviors in children: results from a one-year longitudinal study

This paper describes the degree of similarity between repeated ratings (taken 1 year apart) of overt Type A behaviors in 2 samples totaling 633 children. The measure of overt Type A behaviors was the Matthews Youth Test for Health (MYTH), which was completed by the children's classroom teacher. Results showed that correlations between repeated MYTH ratings approximated .55 and in general increased somewhat with the children's school grade, although correlations between repeated ratings of competitive achievement behaviors of boys residing in an affluent eastern suburb were somewhat lower than above. The degree of similarity across 1 year in children's Type A behaviors is comparable to that found for adult Type A behaviors and for other cardiovascular risk factors in children. The discussion includes a consideration of assumptions underlying research on the origins of Type A behavior and suggests that etiological factors in the development of Type A might profitably be studied in primary school-aged children.     

Linkages Between Children's and Their Friends' Social and Physical Aggression: Evidence for a Gene–Environment Interaction?

Based on a sample of 406 seven-year-old twins, this study examined whether exposure to friends' social or physical aggression, respectively, moderates the effect of heritability on children's own social and physical aggression. Univariate analyses showed that children's own social and physical aggression were significantly explained by genetic factors, whereas friends' social and physical aggression represented "true" environmental factors that were unrelated to children's genetic dispositions. Multivariate analyses further suggested a possible gene–environment interaction in the link between friends' and children's physical aggression but not in the link between friends' and children's social aggression. Instead, friends' social aggression was directly related to children's social aggression, in addition to genetic effects on this behavior. Theoretical and practical implications of these results are discussed.     

齐型空间上奇异积分变换构成的交换子在Morrey空间中的有界性

令T为Rn上的Caldero＇n- Zygmund积分算子,由T构成的交换子的有界性已有较完善的结论,可将其推广到一般的齐型空间.设（X,d,μ）为齐型空间,利用空间的函数分解方法,可证明由奇异积分变换和BMO（X）中的函数b构成的交换子在齐型Morrey空间和Morrey-Herz空间中的有界性.     

国外父母数学教育观念研究进展及其启示

父母教育观念是父母教育素质的关键组成部分,它不仅直接影响父母的教育行为,而且直接或间接影响着儿童的发展.父母数学教育观念作为父母教育观念的重要分支之一,对儿童数学认知发展起着举足轻重的作用.本文对近20年国外父母数学教育观念研究及其成果,特别是父母对子女数学能力的评价、数学学业发展的期望和数学认知发展的归因等三个方面进行了深入的概括分析,并在此基础上提出了对今后父母数学教育观念研究方向与思路的建议.     

Studying mathematics learning in collective activity

This paper describes a study of the interplay between social and developmental processes in children's mathematics learning. The focus is on children's play of an educational game, Treasure Hunt, and the way children's interactions in play frame developmental processes involving arithmetic with base-10 blocks. Sixty-four third and fourth graders were grouped in same- and mixed-grade dyads. Analyses of interactions revealed that players were frequently involved with jointly structuring arithmetical problems involving base-10 blocks. However, the arithmetical goals that members of dyads created often differed as labor became divided in their activity. Two findings were of particular interest: (1) differences in divisions of labor as a function of players' grades and grades of their opponents led to construction of different arithmetical goals, and (2) differences in goals led to different sequences in children's strategic developments, sequences that differed from the developmental trajectory in our matched controls.     

Does context matter? Explicit print instruction during reading varies in its influence by child and classroom factors

This study examined preschool teachers’ (n = 59) explicit print instruction during shared reading and considered whether the benefits of this practice to children's learning (n = 379) varied as a function of the classroom environment and children's developmental characteristics. Measures of explicit print instruction and the classroom environment (global classroom quality, literacy environment) were obtained by aggregating observations taken across the 30 weeks of the study. Child outcomes were measured as spring print knowledge performance, controlling for fall. Child developmental characteristics were measured directly (language ability) and indirectly (attentional skills) in fall and winter, respectively. Findings showed that explicit print instruction contributed to children's learning, but its benefits decreased as the quality of the classroom and children's attentional skills increased. Implications for research and practice are discussed.     

Children's Use of Retreats in Family Child Care Homes

The use of retreat spaces by 65 children in 9 family child care homes was assessed in this study. Family child care providers used daily diaries to collect information about children's retreat frequency and associated behavior. The findings revealed that nearly half of the children used informal, readily available retreats during the research period. Playing with toys was the most frequent and stable retreat activity across age groups. Yet the number of passive and engaged behaviors varied based on child characteristics such as age, gender, and child's mood for the day. Retreat use can be viewed as a potentially adaptive environmental strategy that children apply as their needs change in a given day and from one developmental period to the next. Thus, it is recommended that child care professionals provide access to retreats and support children's varied use of retreat space.     

齐次Morrey-Herz空间上的参数型Marcinkiewicz积分

本文证明了参数型Marcinkiewicz积分μΩρ是齐次Morrey-Herz空间M Kp,qα,λ(Rn)上的有界性算子.     

Self-efficacy beliefs as shapers of children's aspirations and career trajectories

This prospective study tested with 272 children a structural model of the network of sociocognitive influences that shape children's career aspirations and trajectories. Familial socioeconomic status is linked to children's career trajectories only indirectly through its effects on parents' perceived efficacy and academic aspirations. The impact of parental self-efficacy and aspirations on their children's perceived career efficacy and choice is, in turn, entirely mediated through the children's perceived efficacy and academic aspirations. Children's perceived academic, social, and self-regulatory efficacy influence the types of occupational activities for which they judge themselves to be efficacious both directly and through their impact on academic aspirations. Perceived occupational self-efficacy gives direction to the kinds of career pursuits children seriously consider for their life's work and those they disfavor. Children's perceived efficacy rather than their actual academic achievement is the key determinant of their perceived occupational self-efficacy and preferred choice of worklife. Analyses of gender differences reveal that perceived occupational self-efficacy predicts traditionality of career choice.     

家庭亲子关系对儿童人格发展的影响——霍妮社会文化神经症理论对家庭亲子关系的启示

家庭对子女的影响是教育研究中历来倍受关注的热点课题。以血缘为纽带的亲情关系,特定的成长空间环境,赋予了家庭特殊的教育职能。本文以霍妮的社会文化神经症理论为出发点,从家庭教育这个层面,对影响儿童人格形成的重要因素及如何营造良好的家庭亲子关系,促进儿童人格的健全发展作了初步分析和研究。