《中小学数学》小学版2007年第1—2期合刊《有感于“你会握手吗”》(以下简称《有》文),作者对人教版二年上册《数学广角》一课中的“每两个人握一次手,三 ”Primary and secondary mathematics“ elementary school 2007 first 1-2 issue of ”the feeling in “ you will shake hands? ”“ (Hereinafter referred to as ”there is“ text), the author of the PEP two years ”mathematics wide angle“ Lesson in a class ”Every two people hold a hand, three