基于视频弹幕技术的微课程交互设计

摘要

微课程以微视频为主要载体，主要指向支持学生在课堂之外实现自定时空、自定步调的个别化、个性化学习，但并非意味着微课程不需要教学互动。然而，由于微课程学习环境下师生一般都处于物理空间相对分离的状态，缺少面对面教学环境下的即时互动机会与相应的支持，因此大多数微课程在实质上变形为学生自学用的视频资源。视频弹幕是能够直接叠加在视频上显示的用户评论文本，具有呈现的及时性、内容的精炼性以及显示的可控性特征，可以支持用户实现强实时性、高融入性的互动。本研究基于对视频弹幕技术本身内涵与特征的把握，探讨如何通过精心的设计利用视频弹幕技术支持学习者与微课程内容之间的人机交互、支持教师的教学与调控活动实现师生互动，以及如何支持生生之间进行协同学习、分享与共建学习资源等方式的同伴互动。%Taking microvideo as the main media , although microlectures fundamentally point at supporting students 'after-class self-regulated personalized learning , it does not mean that it is necessary to support interactions in the learning process of microlec-tures.However, because in most microlecture learning contexts , the teacher and peers are often separated from an individual learner , the lack of instant interaction opportunities and corresponding supports results in that many microlectures have been substantially uti -lized just as video recourse for individual learning .Video barrage is users'comment texts directly overlaid on videos , which is promising to support multiple real and integrated interactions by ensuring timely and real presentation , short and elaborated contents and controlla-ble virtues.Based on the understanding of the connotations and characteristics of video barrage , this research explores how to design the using of video barrage to support human -computer interaction between students and microlecture contents , to support microlecture teachers'teaching and regulating activities for student -teacher interaction , and to support peer interaction by promoting collaborative learning, learning resource sharing and creation .