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。     

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...     

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.     

Voices from the Field: Perspectives of U.S. Kinesiology Chairs on Opportunities,Challenges, and the Role of Mentoring in the Chair Position

This study examined perspectives of U.S. collegiate kinesiology department chairs (n = 54/144; 37.5% response rate) relative to: (a) opportunities and most enjoyable aspects of being a department chair, (b) challenges and least enjoyable aspects of being a department chair, and (c) perspectives on mentoring. The majority of participants enjoyed their chair role (90%) and did not aspire to advance in administration (61%). Job-related opportunities included mentoring others, facilitating department success, and leading initiatives (e.g., curricula, policies, and finances). Job-related challenges included a lack of university support, personnel issues, and urgent requests for information. Many had a mentor for a long time (mean = 7.9 ± 7.6 years; range 1 to 28 years), and the majority (71%) did not consider their dean a mentor. Protégés appreciated their mentors’ experience, listening skills, and willingness to share information, advice, and empathy. Results from this study provide helpful information for serving as a kinesiology chair.     

Use of rich-media resources by engineering undergraduates

The ability to develop and distribute digital teaching resources in higher education has developed rapidly over the last decade but research into how students use such resources has received limited attention. This study uses questionnaire results, Internet analytic data and semi-structured interviews to examine the use of three types of rich-media teaching resources – lecture podcasts, key-concept videos and tutorial solution videos – by engineering undergraduates. It is found that students value all three types of resource, especially for revision and as a supplement to lectures. Students find short, focused resources more useful than longer ones. Non-native English speakers and those with disabilities derive particular benefits from the resources. The effect of rich-media resources on lecture attendance is found to be small, and two-way.