混合式数学学习中的微课设计研究

随着无线网络与智能移动终端的普及和视频传输技术的成熟,网络学习的范围进一步扩大,移动学习在许多正式与非正式的场合迅速开展。适应碎片时间学习的“微课（Microlecture）”成为当前教育研究领域的一大热点。本文通过分析网络学习（e-Learning）、混合式学习（Blending Learning）、微课（Microlecture）之间的关系,比较几个著名微课网站中的数学微课,指出基于混合式数学学习的微课的设计与制作特色,供研究者与设计者参考。     

Musculoskeletal stiffness during hopping and running does not change following downhill backwards walking

Eccentric contractions that provide spring energy can also cause muscle damage. The aim of this study was to explore leg and vertical stiffness following muscle damage induced by an eccentric exercise protocol. Twenty active males completed 60 minutes of backward-walking on a treadmill at 0.67 m/s and a gradient of ? 8.5° to induce muscle damage. Tests were performed immediately before; immediately post; and 24, 48, and 168 hours post eccentric exercise. Tests included running at 3.35 m/s and hopping at 2.2 Hz using single- and double-legged actions. Leg and vertical stiffness were measured from kinetic and kinematic data, and electromyography (EMG) of five muscles of the preferred limb were recorded during hopping. Increases in pain scores (over 37%) occurred post-exercise and 24 and 48 hours later (p < 0.001). A 7% decrease in maximal voluntary contraction occurred immediately post-exercise (p = 0.019). Changes in knee kinematics during single-legged hopping were observed 168 hours post (p < 0.05). No significant changes were observed in EMG, creatine kinase activity, leg, or vertical stiffness. Results indicate that knee mechanics may be altered to maintain consistent levels of leg and vertical stiffness when eccentric exercise-induced muscle damage is present in the lower legs.     

Analyzing Contemporary Introductory Textbooks on Correctional Administration/Management/Organization: A Content Analysis

This book review essay discusses and analyzes how introductory textbooks on correctional administration, written primarily for the American university market, frame the discourse on this subject matter. The writer presents both quantitative and qualitative empirical evidence of coverage given to prison administration. In addition to traditional content analysis methods, the authors of these books were contacted and asked to explain the decision‐making processes they used for content inclusion, exclusion and/or minimization. The paper concludes with a handful of recommendations on improving texts in this subdiscipline.     

Against all odds: Peace education in times of crisis

Contexts of violent, intractable conflict such as those present in Israel, Nigeria, or Iraq represent times of severe crisis. Reducing the high indices of violence is very urgent, but the attempts of establishing peaceful arrangements in the short- or medium-term usually fail. Peace education, by contrast, is a long-term endeavor to resolve violent, intractable conflicts that aims at affecting moral stances that the conflicting parties take vis-à-vis each other. Unfortunately, however, peace education in times of severe crisis also faces many impediments. These impediments concern the agential, cultural, financial, and legal aspects of educative institutions within context of violent and intractable conflicts. Although these impediments strongly put into question the practice of peace education, this article shows that four reasons nevertheless strongly support this practice. These reasons refer to (1) humanity’s natural goodness, (2) the symbolic importance of peace education, (3) the peace-promoting experiences facilitated through peace education, and (4) peace education’s contribution to overcoming prejudices.     

Dress rehearsal: a Bourdieusian analysis of body work in career portfolio programs

This article examines how career portfolio programs at two secondary schools establish corporeal regimes. Both programs require students to compose portfolios that plot their trajectories through school and into paid work. Prior to graduation, students defend their portfolios before panels of educators and businesspeople. Employing the Bourdieusian concepts of capital and habitus, this article investigates how these programs set up systems that value certain kinds of bodies. Further, it examines how students negotiate these systems and display different kinds of bodies in different kinds of ways. Ultimately, it is argued these disparate bodily performances are read by authorities as indicators of the types of paths students are travelling or should travel into the future.