<![CDATA[Online learning system provides much opportunities to learners to access teaching materials form instructor. There are three key components to support a meaningful interaction: 1) instructional and learning strategies, 2) pedagogical models and construct, and 3) learning technologies. Besides, e-learning includes four feature elements: 1) content relevant to the learning objectives, 2) uses instructional methods , 3) uses media elements, and 4) builds new knowledge and skills.]]>
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