E. F. Ruiz and M. Valdemoros, “Concepts of Ratio and Proportion in Basic Level Students: Case Study,” Proceedings of the 24th Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education, Vol. 4, 2002, pp. 1651- 1657.

has been cited by the following article:

• TITLE: Using an Interactive Computer System to Support the Task of Building the Notions of Ratio and Proportion

  AUTHORS: Elena Fabiola Ruiz Ledesma

  KEYWORDS: Ratio, Proportion, Interactive Activities

  JOURNAL NAME: Creative Education, Vol.1 No.2, September 18, 2010

  ABSTRACT: This article describes the design and general outcome of applying a computer system that includes interactive activities to the topics of ratio and proportion. The work was undertaken with Mexican students attending primary school grade six (11 year olds). In designing the activities, our work was based on the studies of researchers who have focused on such topics, as well as on the work of researchers in the field of computer sciences and education technology. Support of the activities designed is found in psycho-pedagogy, in knowledge of mathematics and in the fields of computer sciences and education technology.