“几何画板”是信息技术与数学教学整合的主要工具,国内关于“几何画板”的研究和论述比较多,都在一定程度上肯定了这个软件在数学教学中的重要作用.它的设计以欧氏几何为基础,图形直观,并且可以操作,具有强大的动态性,对此国内学者已经基本达成共识.本文主要讨论下述问题:“几何画板”和纸笔环境有何本质区别?“几何画板”中的几何和欧氏几何的关系及对中学数学教学有何重要启示?我们形成以下三点认识:第一,“几何画板”虽然以欧氏几 “Geometric Sketchpad ” is the main tool for the integration of information technology and mathematics teaching. The domestic research and discussion on “Geometric Sketchpad ” are more, to a certain extent, affirmed the important role of this software in mathematics teaching.It Based on the Euclidean geometry, the design is intuitionistic, manipulative, and dynamic, and the domestic scholars have basically reached a consensus.This paper mainly discusses the following questions: What is the “geometric drawing board” and the environment of paper and pen? What is the difference? What is the relationship between geometry and Euclidean geometry in Geometrical Sketchpad and what are the important implications for math teaching in middle school? We have formed the following three points of understanding: First, Geometrical Sketchpad