问题三目的:观察儿童两个数量之间简单互反性思维。(大致适用年龄为3—6岁) 在儿童数概念掌握过程中,首先要求他能口手一致地一个一个正确地数数,然后使之能懂得他数到的最后一个数也就是表示这堆物体的总数。在此基础上以两堆不同量的物体进行比较,使儿童能知道哪堆多,哪堆少。两个数量上的互反,还要求儿童能说出这堆 Problem Three Objectives: To observe the simple reciprocal thinking between two numbers of children. (Roughly 3-6 years old) In the mastery of the concept of children, first of all, he is required to be able to print the correct number one by one in a consistent manner, and then make it understand that the last number he has counted means that heap The total number of objects. On this basis, two different heap of objects are compared so that children can know which heap and which heap. The two numbers are reversed, and children are also required to speak the pile