本期发表的“数学素质教育热点透视”一文,涉及数学教育的“非形式化”问题。在93年的扬州会议上,数学教育行家张乃达老师讲了一件实事。有个小贩卖韭菜,吆喝说:“好韭菜,没有一根黄的!”一位行人不声不响从一把韭菜中挑出一根黄的,质问“这是什么?”小贩语塞。张老师评论说:“这是小贩缺乏形式逻辑思维所致”。 The article “Perspectives on hot topics in mathematics education” published this issue concerns the “informalization” of mathematics education. At the Yangzhou conference in 1993, teacher Zhang Naida, a mathematics education expert, spoke about a fact. A hawker sells leeks and sips them and says: “Good leeks, there is no yellow one!” A pedestrian quietly picked a yellow one from a leeks and asked “What is this?” Teacher Zhang commented: “This is due to the lack of formal logic thinking of peddler.”