Solving Problems with The Percentage Bar
| Main Authors: | Galen, Frans van; Freudenthal Institute, Utrecht University, Eerde, Dolly van; Freudenthal Institute, Utrecht University |
|---|---|
| Format: | Article application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Department of Doctoral Program on Mathematics Education, Sriwijaya University
, 2013
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| Online Access: |
http://ejournal.unsri.ac.id/index.php/jme/article/view/558 |
Daftar Isi:
- 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 which 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.Keywords: percentage, model, design research DOI: http://dx.doi.org/10.22342/jme.4.1.558.1-8