通过“染色问题”,培养中学生化归思维

Develop Students' Return Thought by Means of Coloring Problem

本文在解决扇型结构染色问题的基础上,深入探讨如何将其他的染色问题化归为扇形结构染色问题,引导读者深入理解化归思维的内涵与实质。通过实例展示了在问题解决过程中,人们是如何通过化归思维来实现"化难为易、化繁为简、化陌生为熟悉"的。

Based on coloring problem of fan structure, how to turn other coloring problems into those of fan structure was studied in this paper, so connotation and essence of return thought becomes understandable. In problem solving, with return thought, examples were used to show how to achieve conversion from difficulty to easiness, from complexity to simplicity, and from strangeness to familiarity.