数形结合法在《微积分初步》授课中的部分运用

Partial Use of Symbolic-graphic Combination in Calculus Preliminary Teaching

鉴于《微积分学初步》是中央电大统设科目(学生需要参加统考),而我校相当一部分在读高职的学生数学基础知识薄弱,概念模糊,对常用公式、定理、性质记得不清,对基础知识、基本技能和基本方法掌握得不够。针对这些情况,为使复杂问题简单化、抽象问题具体化,以提高学生统考合格率,笔者在平时的授课中力求数与形的结合,并把其中的一些具体做法罗列出来,期望能起抛砖引玉之效。

Calculus Preliminary is the system arranged course of CRTVU （students need to participate in unified examination）, while a considerable part of vocational students in reading of our college have weak basic knowledge of mathematics, blurred concept, unclear common used formulas, theorems, nature, not enough basic knowledge, skills and methods. For these situations, in order to make complex issues becomes simple, abstract issues becomes concrete and improve the pass rate of students＂ unified examination, the author seeks to the symbolic-graphic combination in the usual teaching, sets out some specific practices, expects to play valuable feedback effect.