期刊文献+

一“直”到底的表征方式——-美国教师选择的分数除法算理表征方式

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摘要 分数在小学数学知识结构中起着非常重要的作用,既是学生掌握整数四则运算之后的拓展与延伸,又与小数、比、百分数等概念有着密切的联系。学生在理解分数概念与计算上,存在着诸多困难[1-2]。尤其是分数除法的学习,掌握运算法则很容易,而理解算理比较困难[3]。
出处 《小学教学(数学版)》 2021年第4期24-26,共3页 Primary School Teaching
基金 2015年教育部人文社会科学研究规划基金项目“6~15岁儿童的概率概念认知策略及其发展研究”(项目编号:15YJA880020)的研究成果。
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