Executive functions (EF) are cognitive processes that serve to control an individual's behaviour and cognition and include processes such as working memory, inhibitory control and attention. There is evidence that EF skills are critical to successful transitions to formal learning environments and future academic achievement and are amenable to early intervention. The aim of this project is to develop a sustainable, play based program designed to enhance these skills in the year prior to school. Improving children's EF skills in the year prior to school can produce lasting benefits across the school years, particularly for more vulnerable children. This project will inform professional development programs in early childhood education.