摘要
学生对于分数意义的理解需要经历长期的过程,教学中应设计系列活动帮助学生整体建构分数的意义.从"比、测量、运算和商"4个方面设计了五年级分数单元的6节课,共同承担了对于分数意义多个方面的学习;同时,设计了挑战性的、贯穿整个学习历程的素材,并鼓励学生运用对于分数多方面的理解来解决问题.通过实验班的前后测对比、实验班与对照班后测的对比,设计的6节课达到了预期目标,通过了实践的检验.
There needs a long term to learn the fraction meaning, and it requires to design a series of activities to help students with overall construction. This study designs 6 lessons of fraction Unit in grade 5 integrally in four aspects: ration, measure, operation and quotient, taking the multiple aspects of fraction meaning’s learning together. Meanwhile, we have designed some challenging material throughout the learning process, encouraged students to solve problems using different understanding of fraction. The 6 design lessons in the study have reached expectation through two contrast: the pretest-posttest contrast of experimental class and the posttest contrast between experimental class and control class, and then passed the test of practice.
出处
《数学教育学报》
CSSCI
北大核心
2015年第2期22-25,共4页
Journal of Mathematics Education
基金
北京市中小学名师发展工程项目——基于小学生解决分数实际问题思维过程的教学实验研究
关键词
分数意义
单元设计
行动研究
fraction meaning
unit design
action study
