电子教材：概念、功能与关键技术问题

E-textbook: Definition, Functions and Key Technical Issues

信息化社会对当前的教材形态带来根本冲击，适合数字一代的电子教材成为未来教材建设的趋势。本文首先界定了电子教材的概念，从呈现、媒体、笔记、作业和管理五个方面提出了电子教材应具有的功能特征；并将电子教材与在线课程的内涵进行了比较；最后，提出电子教材使用的五个关键技术问题，即文档格式、终端设备、内容分发、支持服务环境、安全系统。

Information and Communication Technology (ICT) has made a great impact on traditional textbooks. The future of textbooks in a digitized world is e-textbook. In this paper, a formal definiton of e-textbook is given firstly. Structure and layout, interactive media, note-taking, assignment and management are introduced as functional features of e-textbook. We also discuss the differences between e-textbook and online course. Finally, there are five key technical issues related to the use of e-textbook in the classroom, including fileformats, hardwares, content delivery issue, support and security systems.