理解·辨明·用活小学数学第十册第三单元教材例析王芳芳九年义务教育六年制小学数学第十册第三单元“约数和倍数”，概念多而杂，如何帮学生建立清晰的概念，真正理解概念的内涵与外延，教材的基本做法是：一、直观操作数形结合理解概念和算理“约数和倍数”这一单元的特... Understand · Identify · Tertiary mathematics with the tenth unit of the third unit textbook Wang Fangfang nine-year compulsory education six years of primary school mathematics tenth tenth unit “divisor and multiple”, the concept of more and more complex, how to help students to establish a clear Concept, the true understanding of the connotation and extension of the concept of teaching materials, the basic approach is: First, the intuitive operation of the figure combined with the concept of understanding and arithmetic “divisor and multiple” of this unit ...