The Addition Property of Expectation – An Example to Convince

This article describes an example that is designed to convince students of the addition property of expectation.     

Implementing curriculum-embedded formative assessment in primary school science classrooms

The implementation of formative assessment strategies is challenging for teachers. We evaluated teachers’ implementation fidelity of a curriculum-embedded formative assessment programme for primary school science education, investigating both material-supported, direct application and subsequent transfer. Furthermore, the relationship between implementation fidelity and teacher variables was explored. N = 17 German primary school teachers participated in professional development on formative assessment, N = 11 teachers formed a control group. Teachers’ implementation fidelity was evaluated via classroom observations student ratings and an analysis of students’ workbooks, focusing on the frequency and quality of intended formative assessment elements (assessments, feedback and instructional adaptations). Regarding direct application, treatment group teachers’ implementation fidelity was high, with slight variations in quality. Regarding transfer, implementation fidelity was lower but teachers still implemented more formative assessment elements than the control group. Teachers’ pedagogical content knowledge and their evaluation of the formative assessment intervention were associated with implementation success.     

A cross-cultural study of parents' perceptions of early childhood programs

Cross-cultural studies in early childhood education assist in expanding perspectives and gaining increased understanding and appreciation of programs in other countries. Because both Sweden and the United States are interested in parent involvement in early childhood programs, a survey was conducted to assess parent's perceptions of these programs. Following a review of family life and early childhood education in Sweden and the United States are the specific components of the cross-cultural study. A stratified random sample of parents whose children were involved in early childhood programs was done in St. Louis County, MN, United States, and Kronobergs Lan, Småland, Sweden. In the first section of the five-part survey, parents indicated the degree to which they agreed or disagreed with statements about such areas as governmental support of children and families. Parents in Sweden felt more support of the government, whereas parents in the United States used early childhood programs as a support mechanism to increase their confidence. In the other four sections of the survey, parents rated the importance of various types of parental involvement and the importance of various materials, activities, and caregiver actions in their children's programs. In general, parents in Sweden valued informal contact and inner-directed creative materials and activities. Parents in the United States valued more confining activities such as rote counting, community-based experiences, and compliance with adult expectations. The influence of the macro-society on parents' perceptions as well as microsystem interactions and environments is evident in this study. As early childhood educators learn about and adapt new ideas to their own programs, the potential of cross-cultural studies becomes realized in improved opportunities for young children and their families.     

Biological Principles and Threshold Concepts for Understanding Natural Selection

Modern evolutionary theory is both a central theory and an integrative framework of the life sciences. This is reflected in the common references to evolution in modern science education curricula and contexts. In fact, evolution is a core idea that is supposed to support biology learning by facilitating the organization of relevant knowledge. In addition, evolution can function as a pivotal link between concepts and highlight similarities in the complexity of biological concepts. However, empirical studies in many countries have for decades identified deficiencies in students’ scientific understanding of evolution mainly focusing on natural selection. Clearly, there are major obstacles to learning natural selection, and we argue that to overcome them, it is essential to address explicitly the general abstract concepts that underlie the biological processes, e.g., randomness or probability. Hence, we propose a two-dimensional framework for analyzing and structuring teaching of natural selection. The first—purely biological—dimension embraces the three main principles variation, heredity, and selection structured in nine key concepts that form the core idea of natural selection. The second dimension encompasses four so-called thresholds, i.e., general abstract and/or non-perceptual concepts: randomness, probability, spatial scales, and temporal scales. We claim that both of these dimensions must be continuously considered, in tandem, when teaching evolution in order to allow development of a meaningful understanding of the process. Further, we suggest that making the thresholds tangible with the aid of appropriate kinds of visualizations will facilitate grasping of the threshold concepts, and thus, help learners to overcome the difficulties in understanding the central theory of life.     

Understanding Gender through Disney’s Marriages: A Study of Young Korean Immigrant Girls

Much American popular culture has often been criticized for its negative portrayals of females and its potentially harmful influence on young children. However, there are insufficient studies about American young girls’ actual understanding of these female representations. Specifically, the perspectives of young immigrant girls have hardly been addressed in the existing research, even though their perspectives can be derived from what they learn about the social values associated with gender through their exposure to popular culture. This paper thus focuses on young Korean immigrant girls as a significant American immigrant group, and examines their ideas about gender in American popular culture—particularly, Disney films. Since their perceptions of gender were often derived from their discussions of marriage in the films, it closely investigates their understanding of gender roles, as considered through the marriages of Disney protagonists. It then discusses their perceptions of Disney by tracing these ideas to their beliefs about how these same themes become manifested in realistic situations. Finally, this paper provides implications and suggestions for researchers and early childhood educators.

From Students to Teachers: Investigating the Science Teaching Efficacy Beliefs and Experiences of Graduate Primary Teachers

Research in Science Education - The science achievement of primary students, both in Australia and abroad, has been the subject of intensive research in recent decades. Consequently, much research...