像美术有“美感”、音乐有“乐感”、语文外语有“语感”一样,数学有“数感”,数感是新课程教学学习内容的一个重要概念。在《数学课程标准》中提出的“数感”、“符号感”、“空间感”、“统计观念”、“应用意识”、“推理能力”六个概念中“数感”摆在首要位置,因此,教师应 Like art has the beauty of music, music has a sense of music, the language of foreign language has the sense of language, mathematics has a sense of number, sense of the number of the new course teaching is an important concept. “Number Sense”, “Symbol Sense”, “Sense of Space”, “Statistical Idea”, “Application Consciousness” and “Reasoning Ability” put forward in the “Mathematics Curriculum Standard” Therefore, teachers should