改变条件,互换结论,拓展应用——对一道选择题讲评的变式反思

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1001-8875|volume|8|15-17

ISSN: 1001-8875

Source: 数学教学通讯, Vol.volume, Iss.8, 2017-01, pp. : 15-17

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Abstract