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一、拓拓就是拓展、延伸,知识向四面八方延伸,联系、扩展.由一个知识向四面八方拓展,目的就是让教师和学生,站高望远、见多识广.见多就要扩大视野,对知识的研究要达到广阔、立体、网络.教师要在教材的挖掘、联系(如空间联系、时间联系、横向联系、纵向联系、古今中外联系)这些方面都得要放大.在数学课堂教学中,我采用对题目进行变式拓展的方法,扩大学生对知识的认知深度,取得了比较好的教学效果.
First, extension is to expand the extension, extension, extension of knowledge to all directions, contact, expansion. From one knowledge to expand in all directions, the purpose is to allow teachers and students to stand tall, knowledgeable. See more to expand their horizons, the knowledge Research should reach a broad, three-dimensional, network.Teachers in the excavation of textbooks, contact (such as space contact, time contact, horizontal contact, vertical link, ancient and modern Chinese and foreign links) these aspects have to be enlarged in mathematics classroom teaching, I use Variants on the subject to expand the method to expand students’ knowledge of the depth of knowledge, and achieved good teaching results.