求翻译：教师通过让学生合作互编故事，达到了故事教学分层教学的目标，使学生各尽其才，各有所得。在课堂的最后一个环节，教师设计了一个挑战性的活动，也是对本单元综合语言运用能力的扩展，由于这项活动与孩子的生活贴的很近，虽有一定的难度，但还是很具有挑战性。学生们乐于参与，乐于表现，取得了良好的教学目的。是什么意思？

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Teachers have the students through collaborative interaction stories, teaching the story of the hierarchical teaching goals and to make the best of their students, with only. In the classroom the last part, teachers have designed a challenging activity, is the language of the unit ability to use the

The teacher through lets the student cooperate arranges the story mutually, had achieved the story teaching lamination teaching goal, causes student each its talent, has respectively obtained.In the classroom last link, the teacher has designed a challenging activity%2

Teachers by having students cooperate each other stories, achieve the goal of teaching and teaching the story, only allows the student the best, each has received. At the last session of class, teachers design a challenging activity, but also to the expansion of overall language ability in this unit