明算理算法,积活动经验——以《异分母分数加减法》为例

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 2095-3712|volume|14X|83-84

ISSN: 2095-3712

Source: 教育观察, Vol.volume, Iss.14X, 2015-01, pp. : 83-84

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Abstract