Notice, explore, and talk about mathematics: making a positive difference for preschool children, families, and educators in Australian communities that experience multiple disadvantages

Let's Count is a preschool mathematics intervention implemented by The Smith Family from 2012 to the present in "disadvantaged" communities across Australia. It is based on current mathematics and early childhood education research and aligns with the Australian Early Years Learning Framework. Let's Count has been shown to be effective in enhancing mathematics learning and dispositions of young children, early childhood educators, and families through a longitudinal evaluation undertaken from 2012 to 2015. In this chapter, the authors explore the development, implementation, and evaluation of Let's Count and highlight the importance of adults noticing, exploring, and talking about children's mathematics. The findings from the longitudinal evaluation of Let's Count suggest that when adults notice children's mathematics, then children's learning thrives, and the positive dispositions and confidence of parents and educators increase. Let's Count has made a positive difference for many children and adults across Australia.