This paper reports further findings from a study on categorisation of typical problems in the learning of ratio originally presented at the 2011 conference. The paper focuses specifically on the seven categories identified; examines strategies used by two classes of Primary 6 students to solve problems, and presents data in the form of student journal writing; interviews; voice recordings and a pupil perception survey. Pre- and post-tests were administered. Outcomes reveal the positive effects of learning ratio through categorisation.