one thing is clear that varying the activity types can not only help maintain good classroom discipline,but also motivate the pupils and keep then interested in leaening.However,too much shifting from one activity to another requires clear instructions or otherwise causes confusion.的翻译：正在翻译，请等待... 什么意思？中文翻译英文，英文翻译中文，怎么说？

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一件事是清楚的变化活动类型可能不仅帮助坚持好教室学科，而且刺激学生并且保持对leaening然后感兴趣。然而，转移从一活动到另一个太多要求清楚的指示或否则导致混乱。

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