课程范围与来源
按旧版沪教六年级上册第二章顺序，覆盖 2.1 分数与除法、2.2 分数的基本性质（含约分）。下一课接比较大小与通分。例子、讲稿、练习由本项目编写，未嵌入教材扫描图片。
出版社配套书目录 · 图形工具与许可。本页可离线使用，不连接实时模型。
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