Exals.com：
       Extramural Autonomous Learning System的缩写，音同Excel（微软Office著名表格软件，预示着exals的光辉未来）。
       It is the abbreviation of Extramural Autonomous Learning System and the homonym of Excel (a well-known spreadsheet of Microsoft Office software, indicating the bright future of exals).
       exals是一个全新的教学平台系统，分为内容管理、学习管理、课程管理三大功能，包含了论坛、测验、资源、投票、问卷、作业、聊天和博客等模块。其基于“社会建构主义理论”而设计开发，较之其他以课程为中心的课程管理系统，exals较好的体现了以学生为中心的创新教育理念。 
       Exals is a new teaching platform system with three major features, namely, content management, study management, course management, including such modules as forum, test, resource, voting, uestionnaire, assignment, chat and blog, etc. It is designed and developed on the base of “theory of social constructionism” and reflects the innovative student-centered education concept in comparison with other course-centered ourse management system.

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