龙虾怎样奏“乐”

自然界的动物在遭遇危险的时候,有各种各样的御敌招数,如毒蛇喷射毒液,章鱼喷出墨汁,电鳗放电,壁虎断尾求生等,还有的动物变换身形、虚张声势以吓唬敌人,而龙虾的防卫术则尤其别具一格。     

Adoptive Gay Father Families: A Longitudinal Study of Children’s Adjustment at Early Adolescence

Findings are presented from the second phase of a UK longitudinal study of 33 gay father, 35 lesbian mother, and 43 heterosexual parent families when their adopted children reached early adolescence. Participants predominantly lived in urban/suburban areas and were mostly white and well-educated. Standardized interviews, observations, and questionnaires of parental mental health, parent–child relationships, and adolescent adjustment were administered to parents, children, and teachers between 2016 and 2018. There were few differences between family types. However, adjustment problems had increased in all family types, with better parenting quality and parental mental health associated with fewer adjustment problems. The findings contribute to adoption policy and practice, and to theoretical understanding of the role of parental gender in child development.     

Preschoolers’ Concepts of Digestive Physiology and Their Links with Body Mass Index

Research in Science Education - In this exploratory study, a sample of 20 four-year-olds took part in structured interviews in order to assess their biological knowledge of how the human body...     

Autonomy: The importance of a scientific theory in education reform

The six national goals established by the National Governors' Association for education reform in the 1990s were conceived by people who had the power to decide what outcomes they wanted based on their own values and priorities. Although it is impossible to avoid questions of values, it is necessary in defining goals for education to consider scientific, explanatory theories about how human beings acquire knowledge and moral values. Jean Piaget's conceptualization of autonomy, in his unusual sense of the term, provides an overall aim for the development of individuals as well as of society, both in the intellectual and the moral realms. Autonomy as the aim of education is based on constructivism, a scientific theory, and would obviate the outdated conceptualization and contradictions among the six national goals.     

Balancing the Environment: Computational Models as Interactive Participants in a STEM Classroom

Journal of Science Education and Technology - This paper describes the work done by sixth grade students to achieve and sustain productive and personally meaningful lines of inquiry with...     

The Vertex Project: Children Creating and Populating 3D Virtual Worlds

This paper outlines early investigations and initial outcomes of The Vertex Project, a school‐based action research project currently underway at Middlesex University. The project aims to explore the potential of Shared 3D Virtual Environments as creative learning tools for children, and looks into the challenges facing their practical integration into the primary classroom. Working in partnership with three primary schools, the project sets out to investigate the teaching and learning possibilities offered by Internet based 3D virtual environments, placing particular emphasis on the opportunities provided by the active participation of children in the design and construction of their own virtual worlds, and in the creation of avatars with which to represent themselves within these spaces.