Besides, since teacher and student are separated in different time and space, interactions between both sides, feedback from teacher and collaborative work among students should be promoted.
此外，由于教师和学习者分处在不同的空间中，所以双方的互动和反馈，以及学习者之间的协作学习应予以重视和加强。
It is also used as a unit close to reconstruct their understanding of the theme through a collaborative effort with the teacher and their peers.
它也常作为一个主题的完结活动，让老师与同学们共同总结对主题的理解。
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