求翻译：有利于以旧引新：在课堂导入阶段，教师常引导学生复习旧知识，而引出新知识，旧知识是学习新知识的铺垫。这就要求课堂导入要符合教学目的的要求教学目的是课堂教学的指导思想，它是上课的出发点和所要达到的归宿。 是否实现教学目的，是衡量一堂课成败的首要标准，教师应该对学生传授哪些新知识、要达到什么要求、培养学生哪些能力、达到什么水平、对学生进行怎样的思想道德教育、如何发展学生的各项能力等等都要做到心中有数。所以，教师在进行“导入”时就要启发和引导学生去明确教学目的，激发学习动机，产生强烈的求知欲望，进入到良好的心理准备状态。是什么意思？

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In the old lead to new: Import the stage in the classroom, teachers guide students often review old knowledge, and lead a new knowledge, it is old knowledge learning new knowledge of the Foundation. This requires that you want to import the classroom teaching purposes consistent with the purpose of

Is advantageous in by directs old newly: Inducts the stage in the classroom, the teacher often guides the student to%2

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