教科书扫描“公倍数和公因数”是苏教版五年级数学下册第三单元的内容,教材分两段安排教学这部分内容:第一段,认识公倍数、最小公倍数,探索找两个数的最小公倍数的方法:第二段,认识公因数、最大公因数,探 Textbook scanning “The common multiple and the common divisor” is the fifth unit of the Sujiao version of mathematics third unit content, teaching materials arranged in two sections of this part of the teaching: the first paragraph, to know the common multiple, the least common multiple, to find two numbers The least common multiple approach: The second paragraph, to know the common divisor, the greatest common factor, exploration