基于英语精读课文主题建构口语教学活动

语言学习是一种目标取向的行为,英语学习是否达到预定的目标要看学生能否自如地用英语表达自己的思想,用英语来完成各种任务,是否掌握了英语学习策略等。探讨教学方案旨在找出一种有效的方式,以精读课的授课内容为依托设计口语活动主题,培养学生自主学习和知识建构能力,变被动接受为主动学习,提高学生的英语综合应用能力。     

Making sense of conceptual tools in student-generated cases: Student teachers' problem-solving processes

This article examines the way student teachers make sense of conceptual tools when writing cases. In order to understand the problem-solving process, an analysis of the interactions is conducted. The findings show that transforming practical experiences into theoretical reflection is not a straightforward matter. To be able to elaborate on the task it is crucial to make meaning of the tools. It is demonstrated that the institutional practices, rules and expectations must be explicit for the students. The overall aim is to demonstrate that activity theory can enhance our understanding of the interdependence between activity, task and mediating tools.     

高中艺术欣赏“情景引导探究式”教学策略的研究

高中艺术课是一门通过对艺术的感知与体验,培养学生的艺术审美情趣、提升学生人文素养、增强学生人格魅力的二期课改新课程。文章通过教学过程中的实践与探索,用具体的课例对该策略的程序及实效,进行了详细的阐述。通过这种教学策略培养学生会探究、会学习的主体性意识,在艺术实践活动中,发展学生对音乐艺术感受力和想像力,启迪创造性思维。     

工作记忆:人类高级认知活动的核心

工作记忆是个体在执行认知任务过程中,对信息暂时保持与操作的能力。近年来的诸多研究指出,工作记忆在人类智力、学习、推理、创造力等高级认知活动中起重要的作用。潜变量分析揭示了工作记忆的中央执行系统与高级认知活动之间存在着密切关系;而脑成像研究显示,工作记忆与高级认知活动的共享脑机制可能是两者关系紧密的主要原因;通过对个体工作记忆能力的训练,提升其阅读能力、智力水平等高级认知能力的干预研究,则进一步证明了工作记忆在人类高级认知活动中的核心影响。     

研究生学术信息查寻行为模型与实证研究

[目的/意义]通过模型设计和实证分析刻画研究生学术信息查寻行为特征、潜在规律,为图书馆信息服务和查询任务设计提供建议。[方法/过程]基于活动理论及其方法论构建研究生学术查寻行为的六步研究模型,以北京大学研究生为例,通过问卷调查和访谈收集相关数据。[结果/结论]构建研究生学术信息查寻行为的活动模型,分析个体查寻行为和合作查寻行为的主体、客体、工具、结果、子系统和结构特征,揭示研究生在查寻工具选择、障碍克服、合作查寻等方面的潜在规律,总结图书馆资源推介、定题咨询、信息素养教育和研究生查询任务设计方面的建议。     

Comparative evaluation of heart rate-based monitors: Apple Watch vs Fitbit Charge HR

The purpose of this investigation was to examine the validity of energy expenditure (EE), steps, and heart rate measured with the Apple Watch 1 and Fitbit Charge HR. Thirty-nine healthy adults wore the two monitors while completing a semi-structured activity protocol consisting of 20 minutes of sedentary activity, 25 minutes of aerobic exercise, and 25 minutes of light intensity physical activity. Criterion measures were obtained from an Oxycon Mobile for EE, a pedometer for steps, and a Polar heart rate strap worn on the chest for heart rate. For estimating whole-trial EE, the mean absolute percent error (MAPE) from Fitbit Charge HR (32.9%) was more than twice that of Apple Watch 1 (15.2%). This trend was consistent for the individual conditions. Both monitors accurately assessed steps during aerobic activity (MAPE_Apple: 6.2%; MAPE_Fitbit: 9.4%) but overestimated steps in light physical activity. For heart rate, Fitbit Charge HR produced its smallest MAPE in sedentary behaviors (7.2%), followed by aerobic exercise (8.4%), and light activity (10.1%). The Apple Watch 1 had stronger validity than the Fitbit Charge HR for assessing overall EE and steps during aerobic exercise. The Fitbit Charge HR provided heart rate estimates that were statistically equivalent to Polar monitor.     

Fluctuation – a common but neglected pattern of physical activity behaviour: An exploratory review of studies in recent 20 years

Background: Regular physical activity (PA) is beneficial for physical and psychological well-being, yet many people do not achieve these health benefits due to irregular PA participation which is also known as fluctuation. Limited attention has been given to the phenomenon of fluctuation in the PA behaviour literature. Objective: The aim of this review was to explore and to map definitions, measurements, behavioural evidence, and factors related to PA fluctuation. Methods: Eligible studies were initially identified by a systematic search of articles conducted in four databases: Scopus, PubMed, PsycINFO, and SPORTDiscus between January 1996 and March 2016. Inclusion and exclusion criteria were set to check the eligibility of all articles. Additional articles were included by manual searching and expert recommendation. Results: Fifteen articles were finally included. Definitions of fluctuation are understood from two perspectives, either as a stage in the process of behaviour change, or as a particular PA phenomenon consisting of lapse and readoption. Common features were extracted: behavioural irregularity, high risk of drop-out, intention and readiness for PA, low automaticity, and limited self-regulation. Furthermore, fluctuation identification was summarised in three approaches such as stage algorithm, self-identified PA lapse and readoption, and prospective within-person variation in meeting the PA guidelines. Regarding the empirical evidence, this review found that people in PA fluctuation were significantly distinct from those in preparation and maintenance of PA behavioural performance, as well as distinct in psychosocial features. Conclusions: Notwithstanding the limitations, this review has provided valuable insight into the phenomenon of PA fluctuation.     

Democratic communities of inquiry: Creating opportunities to develop citizenship

One of the most significant obstacles to inquiry and deliberation is citizenship education. There are few mechanisms for the development of citizens’ democratic character within most societies, and greater opportunities need to be made to ensure our democracies are epistemically justifiable. The character and quality of citizens’ interactions are a crucial aspect for any democracy; their engagement (or lack thereof) make a significant difference between a deliberative society and an electoral oligarchy. I contend that through demarchic procedures, citizens are subject to collective learning process in virtue of being part of communal decision-making and in so doing can develop their capacities for deliberation with practice over time. Demarchic bodies (functionally decentralised authorities that have members chosen by random selection) can be utilised as communities of inquiry (learning processes where participants collectively construct a problem). By viewing democracy as both a learning process and a decision-making mechanism, the quality of deliberation and participation can improve over time as well.     

Metaphors of knowing,doing and being: Capturing experience in teaching and teacher education

In this article, Bateson's idea of human beings thinking with metaphors and learning through stories is examined as it played out within accumulated educational research studies. Five storied metaphors illuminating knowing, doing and being are highlighted from five investigations involving different research teams. In the cross-case analysis, the importance of narrative exemplars emerges, along with the significance of metaphors serving as proxies for teachers' experiences. The plotlines of the metaphors, the morals of the metaphors and the truths of the metaphors are also discussed. In the end result, the value of metaphors in surfacing teachers' embedded, embodied knowledge of experience is affirmed as well as the deftness of the narrative inquiry research method in metaphorically capturing pre-service and inservice teachers' storied experiences.     

Intercultural language teaching as a catalyst for teacher inquiry

This study investigated how two teachers of languages, facilitated by university researchers, developed their practices with regard to intercultural language teaching. Taking a qualitative case study approach, we collected data from classroom observations, interviews, debriefing conversations, and guided reflective pieces written by the teachers. Findings indicate that the opportunities for teachers to inquire into their own practices shifted these teachers' approaches to language teaching to accommodate a curriculum expectation to develop students' intercultural communicative competence in plurilingual contexts. The study offers valuable insights for teacher education into the ways teachers' inquiries can support teachers’ responses to curricular change.