数学严密的逻辑性、高度的抽象性等特点,决定了数学学习既不能抹去具体的活动或操作,也不能放弃对数学“抽象”之美的追求.但大量课堂观察发现:学生经不起“抽象”的考验——不会数学地思维,导致“抽象”阶段思维停滞或迷失前进的方向.深度分析发现:其主要原因是导入性学习活动学习 Mathematically rigorous logic, a high degree of abstraction and other characteristics, determines the mathematical learning can neither erase the specific activities or operations, can not give up the pursuit of mathematics “Abstract ” However, a large number of classroom observation found that: The test of “abstract ” - not thinking mathematically, leading to “stagnation” or stagnation of the “abstract ” stage thinking.Due to the deep analysis, it is found that the main reason is that the learning of the introductory learning activities