〔教例〕在１０以内数的加减法计算的复习教学中 ,我主要分五个层次来完成。第一层次 ,是常规性的听算、视算。第二层次 ,我出示８只小狗图 ,要求学生把它分成２份 ,并写出相应的一道加法算式和一道减法算式。马上就有同学问 :“可不可以把它分成３份？”我说 :“好的 ,你想分 [Example] In the review and teaching of addition and subtraction with a count of 10, I mainly accomplish it in five levels. The first level is the conventional hearing, accounting. On the second level, I present eight puppies and ask the students to divide it into two parts and write the corresponding addition formula and a subtraction formula. Some students immediately asked: “Can it be divided into three copies?” I said: "Well, you want to divide