文章基本信息

标题：Solving Problems with The Percentage Bar
本地全文：下载
作者：Frans van Galen ; Dolly van Eerde
期刊名称：Journal on Mathematics Education
印刷版ISSN：2087-8885
出版年度：2012
卷号：4
期号：1
页码：1-8
出版社：Indonesian Mathematical Society
摘要：At the end of primary school all children more of less know what a percentage is, but yet they often struggle with percentage problems. This article describes a study in w hich students of 13 and 14 years old were given a written test with percentage problems and a week later were interviewed about the way they solved some of these problems. In a teaching experiment the students were then taught the use of the percentage bar . Although the teaching experiment was very short - just one lesson - the results confirm that the percentage bar is a powerful model that deserves a central place in the teaching of percentages.
关键词：percentage; model; design research