Jo Grimmond has worked in early childhood education and care (ECEC) for 30 years as a teacher, director, lecturer, trainer, and community engagement coordinator. She is also certified in the Early Start Denver Model (ESDM), and uses this experience and expertise to support educators in their work with children with Autism. Her current role is as an E-learning Content Officer in the professional learning team at Early Childhood Australia. With a great passion for early childhood mathematics, Jo’s current PhD research focus is the development of a play-based numeracy assessment tool for educators to use with children using blocks. She is a a dedicated and passionate advocate for the early childhood sector, particularly in the area of workforce development and quality improvement, with her area of expertise being emergent mathematics, play-based learning and intentional pedagogy and practice.