Using coloured rods to teach arithmetic: Some fundamental principles.

Geddes, J.2018-09-072018-09-071963Geddes, J. (1962/1963). Using coloured rods to teach arithmetic: Some fundamental principles. Symposium: A Journal for Education in Southern Africa, pp. 67-71.https://hdl.handle.net/10539/25572ArticleenUniversity of the WitwatersrandArithmetic – Study and teaching (Elementary) – South AfricaTeaching – Aids and devices – 1963Visual educationVisual aidsUsing coloured rods to teach arithmetic: Some fundamental principles.Article