關於無理数概念的引進,代數課本中的教材與教學大綱所指示的不盡一致,但这一課題在教学中非常重要,因此,有些教師很希望知道這一段教材應該怎樣處理。我們曾先梭收到白綿和范棄疾同志的稿件,論及這個問題,因兩稿有不少相同之處,所以我們把這兩篇綜合成一篇發表,供教師們參考。 Regarding the introduction of the concept of irrational numbers, textbooks in algebra textbooks are not consistent with the instruction in the syllabus, but this topic is very important in teaching. Therefore, some teachers would like to know how this paragraph of teaching materials should be handled. We had previously received the manuscripts of Comrades Bai Mian and Fan Xiujia. We discussed this issue. Since there are many similarities between the two manuscripts, we have synthesized these two articles into one for teachers’ reference.