The use of alternative double number lines as models of ratio tasks and as models for ratio relations and scaling

Küchemann, Dietmar and Hodgen, Jeremy and Brown, Margaret (2014) The use of alternative double number lines as models of ratio tasks and as models for ratio relations and scaling. In: 8th British Congress of Mathematics Education, 14 - 17 April 2014, University of Nottingham.

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Abstract

In this paper we draw on ICCAMS project materials that used the double number line (DNL) to develop secondary school students’ understanding of multiplicative reasoning. In particular, we look at the use of a DNL, and its alternative version, as a model of ratio tasks, as a model for developing an understanding of ratio relations, and finally (but only briefly) as a model for developing the notion of multiplication as scaling.

Item Type: Conference or Workshop Item (Paper)
Keywords: Double number line, ratio, scaling, multiplicative reasoning
Schools/Departments: University of Nottingham UK Campus > Faculty of Social Sciences > School of Education
Depositing User: Collier, Elanor
Date Deposited: 14 Mar 2016 12:07
Last Modified: 15 Sep 2016 20:11
URI: http://eprints.nottingham.ac.uk/id/eprint/32202

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