“统计与概率”在小学阶段分别出现在以下几个年级:从上表可以看出,无论是哪个年级,教材都无一例外地安排了随机试验来作为学生学习概率的主要活动。我发现孩子已经有了初步判断可能性大小的能力,看到课本中给出的9白1黄,学生很容易就能得出白球的可能性大,教材为什么还会安排这样一个试验呢? Statistics and Probabilities appear in the following grades at the primary school level. As can be seen from the above table, no matter what the grade, the textbook has arranged randomized experiments as the main activity of students’ probabilities of learning. I found that children already have the ability to determine the possibility of the initial size, see the text given in 9 white 1 yellow, students can easily come up with the possibility of white ball, why the textbook will arrange such a test?