在教学实践中发现 ,大部分学生心中无图 ,或者到用时就忘了图 ,常使一些可很好地解决的问题得不到妥善解决 ,或在一些本可简捷处理的问题面前束手无策。可见 ,在数学学习中经常想“图”,灵活用“图”,应成为学生的一种自觉意识和行为。初中数学从代数到几何 ,所学之图可谓不少 In the teaching practice, most students have no plans in mind, or forget about the maps when they are in use. Often, some problems that can be solved well are not properly solved, or they are incapable of dealing with problems that could be dealt with simply. Visible, in mathematics learning often want to “map”, flexible use of “graph” should be a student’s consciousness and behavior. Junior mathematics from algebra to geometry, the map can be learned