序数是表示集合中元素排列次序的数,或者说序数是表示事物次序的数,用“第几”来表示。序数教学是在数数教学的基础上进行的。幼儿在学习数数时,他们对自然数排列的顺序已有所了解,所以帛数教学相对来说是比较容易的。在序数教学中让幼儿掌握好序数的定向特点,即使幼儿懂得一个物体是第几个与从哪个方向开始数是有关的,从上到下,从下到上,从左到右,或从右到左 The ordinal number indicates the order in which the elements in the set are arranged, or the ordinal number indicates the order of things, and the “ordinal number” indicates the ordinal number. Ordinal teaching is based on the teaching of mathematics. When children learn maths, they already know the order in which natural numbers are arranged, so it is comparatively easy to teach them. In ordinal teaching, children can grasp the orientation characteristics of ordinal numbers. Even though young children know how often an object is related to the direction from which direction, from top to bottom, from bottom to top, from left to right, or from right To the left