Abstract
This study uses number sentences involving two unknown numbers to identify some key junctures between relational thinking on number sentences and an ability to deal with sentences involving literal symbols. In this paper, the focus is on how students were able to make generalisations on sentences involving two unknown numbers, and how these influenced their performance on sentences involving literal symbols. In so doing, it aims to identify some key linkages as students make a transition from arithmetic to algebra.
Max Stephens, Wang Xu