数与形是数学教学研究对象的两个侧面,把数量关系和空间形式结合起来去分析问题、解决问题,就是数形结合思想。“数形结合”可以借助简单的图形、符号和文字所作的示意图,促进学生形象思维和抽象思维的协调发展,沟通数学知识之间的联系,从复杂的数量关系中凸显最本质的特征。 Number and form are the two sides of the object of mathematical teaching research, the number of relations and spatial forms to analyze the problem and solve the problem is the combination of number and shape. “Combination of numbers and shapes ” can promote the harmonious development of students’ image thinking and abstract thinking with the help of schematic diagrams of simple figures, symbols and words, communicate the connection between mathematical knowledge and highlight the most essential features from the complicated quantitative relations .