“至少”在人教版(2013)小学数学五、六年级教材里出现的频率较高,仅在五年级下册就出现了17次,其中“因数和倍数”出现1次,“长方体和正方体”出现11次,“数学广角——找次品”出现5次。例1,(第12页第9题)“长方体和正方体”主要是在计算长方体的棱长总和、表面积的例题和习题中,例2,为迎接五一国际劳动节,工人叔叔要在工人俱乐部的四周装上彩灯(地面的 “At least ” appeared frequently in PEP textbooks of PEP (2013) primary schools, 17 times only in the fifth grade, of which “factor and multiple” appeared once, “Box and cube ” appeared 11 times, “mathematical wide-angle - looking for defective ” appeared 5 times. Example 1, (page 12, No. 9) “Box and cube ” is mainly in the calculation of the total length of the prism, the surface area of ​​the examples and exercises, Example 2, to meet May 1 International Labor Day, Workers club surrounded by lanterns (ground