人教版六年级数学上册 第四单元 比 第1课时　比的意义 教案

人教版六年级数学上册 第四单元 比 第1课时　比的意义 INCLUDEPICTURE "9.4/教学目标.tif" \ MERGEFORMAT INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学目标.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学目标.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学目标.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学目标.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学目标.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学目标.tif" \ MERGEFORMATINET 1．鼓励学生积极主动地学习从差比到倍比的过程，理解比的意义。 2．通过自主学习，使学生认识比的各部分名称，会正确读写比。 3．通过学习比、分数、除法之间的联系与区别，渗透对立统一的辩证唯物主义的观点。 INCLUDEPICTURE "9.4/重点难点.tif" \ MERGEFORMAT INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\重点难点.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\重点难点.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\重点难点.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\重点难点.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\重点难点.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\重点难点.tif" \ MERGEFORMATINET 重点：比与除法、分数的关系。 难点：理解比的意义。 INCLUDEPICTURE "9.4/教学准备.tif" \ MERGEFORMAT INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学准备.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学准备.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学准备.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学准备.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学准备.tif" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学准备.tif" \ MERGEFORMATINET 课件、投影仪、小黑板等。 INCLUDEPICTURE "9.4/教学步骤.TIF" \ MERGEFORMAT INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学步骤.TIF" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学步骤.TIF" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学步骤.TIF" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学步骤.TIF" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学步骤.TIF" \ MERGEFORMATINET INCLUDEPICTURE "C:\\Users\\Administrator\\Desktop\\六上人数教案\\教学步骤.TIF" \ MERGEFORMATINET 一、情境导入 创设情境，出示图片： 一面五星红旗的长是15cm，宽是10cm。怎样用算式表示它们的长和宽的关系？ 要求学生根据图片，自由提出问题，列式计算。 学生可能提出 ... ...