摘要
竖式是笔算的一种书写形式,利用竖式计算是基于计算法则进行的。计算法则通常要满足运算定律,算理则为计算法则提供了理论依据。算理、算法是笔算教学的两大着力点,两者相辅相成。知“式”,即掌握算法,确保实现运算能力的最低要求——“正确”。达“理”,即明晰算理,给计算教学注入更多的根部营养,可以助力学生运算能力的提升。
The vertical formula is a kind of written calculation and using the vertical formula is based on the calculating algorithm which is usually necessary to satisfy the law of operation.The calculation can provide laws of calculation with the theoretical underpinnings.The calculating theory and algorithm are the two focuses of writing calculation teaching,and they interplay and complement each other.Mastering algorithm is to guarantee the minimum requirement of realizing the operating competence,and clarifying calculation theory is to inject more rooted nutrition into calculation teaching,which can facilitate students’competence of operation.
作者
姜华
魏光明
JIANG Hua;WEI Guangming(Nanjing Zhiyuan Foreign Languages Primary School,Nanjing 210019,China)
出处
《江苏教育研究》
2020年第11期58-61,共4页
Jiangsu Education Research
基金
江苏省教育科学“十二五”规划2015年度重点资助课题“小学数学‘起点型核心知识’教学研究”(B-a/2015/02/022)
江苏省基础教育前瞻性教学改革实验项目“小学数学起点型核心知识的体系建构与教学实践”的阶段研究成果。
关键词
笔算教学
竖式
算法
算理
written calculation teaching
vertical formula
algorithm
calculation theory
