1.溯本求源原则我们对教材的“二次开发”是在执行《标准》和尊重教材编写意图的前提下,对教材进行的“情景化”加工处理的过程,在保持数学知识的系统性、严密性、逻辑性的基础上溯本求源,循“序”渐进,所谓“源”就是教材编写者的意图,所谓“序”是他们心中的知识框架结构.我们要把教科书具体的内容放到整个数学体系中来考察,准确理解和把握教学内容的 1. Tracing to the source principle Our teaching material “secondary development” is in the implementation of “standard” and respect the teaching materials intended to be written on the premise of the textbook “situational” processing process, while maintaining Mathematic knowledge of the system, rigorous, logical basis for the source of this retrospective, follow the “sequence” gradual, the so-called “source” is the intent of the textbook writers, the so-called “sequence ” is their knowledge Frame structure.We should put the textbook specific content into the entire mathematical system to investigate, accurately understand and grasp the teaching content