Reasoning refers to students "developing an increasingly sophisticated capacity for logical, statistical and probabilistic thinking and actions, such as conjecturing, hypothesising, analysing, proving, evaluating, explaining, inferring, justifying, refuting, abstracting and generalising." (Victorian Curriculum). This is one of the four key proficiencies in the Victorian Curriculum, but not necessarily one that students in junior secondary classes find easy or that is regularly integrated into the curriculum. The Australian Association of Mathematics Teachers suggests that reasoning should be integrated into all or most classes and that it is at the heart of all teaching and learning in Mathematics. This presentation will consider different activities that can be used on a regular basis to promote reasoning. Participants will have the opportunity to explore these activities for themselves.