用大纲精神分析教材一、理解这节教材的编排意图,研究教材的地位和作用。大纲遵循“由浅入深,由易到难,循序渐进,螺旋上升”的原则,“按照儿童的认识规律和数学知识的内在联系。,把整数的认识和四则运算教材分成“二十以内”、“百以内”,“万以内”和“多位数”四个阶段,“两位数乘多位数”这节教材,处在第四个循环圈上。从纵的方面来 With the outline of the spirit of teaching materials, understanding of this section textbook intent to arrange, study the status and role of teaching materials. The outline follows the principle of “from light to dark, from easy to difficult, gradual and spiral” and “according to the inherent relationship between the children's cognitive laws and mathematical knowledge, dividing the knowledge of the integer and the four arithmetic textbooks into” less than twenty, “” Hundred “,” within “and” multi-digit “four stages,” two-digit multiples "of this section of teaching materials, in the fourth circle.From the vertical aspect