"Shu zi." . . "數字" . . . "數字感 : 1. 2. 3哪裡來?" . "數字感 = The number sense : 1. 2. 3哪裡來? : how the mind creates mathematics" . "Shu zi gan = The number sense : 1. 2. 3 na li lai? : how the mind creates mathematics" . "數字感 : 1・2・3哪裏來?" . "Shu zi gan : 1. 2. 3 na li lai?" . . . "123哪裏來" . . . . . . . . "Shu zi gan : 1, 2, 3 na li lai?" . . "123 na li lai" . . . . . . . "Shu xue jiao xue fa." . . "數學 教學法" .