国际视野下小学生位值制知识学习研究及启示

Research and Inspiration on Primary School Students' Learningof Value System Knowledge from an International Perspective

十进位值制计数法是社会发展中重要的计数方法。教师应在深刻认识十进位值制概念内涵的基础上,把握位值制的结构层次和发展阶段。学生比较数大小的能力与其对位值的了解程度有关;学生运算能力表现优劣与位值知识理解的关系密切,理解十进位值制有助于提升学生的运算能力。教师要明晰位值制教学任务的重要性,诊断学生位值制知识理解程度,促进学生学会基于位值制直观理解运算原理。

The decimal counting method is an important counting method in social development.On the basis of a profound understanding of the connotation of the decimal value system,teachers grasp the structural hierarchy and development stages of the positional value system.The ability of students to compare numerical values is related to their level of understanding of corresponding values;The performance of students'computational ability is closely related to their understanding of positional knowledge,and understanding the decimal value system can help improve students'computational ability.Teachers should clarify the importance of teaching tasks based on the value system,diagnose students'understanding of value system knowledge,and promote students to learn how to intuitively understand the principles of operations based on the value system.