Rosemary is a consultant and curriculum developer for mathematics education specialising in early childhood. Rosemary conducts seminars for teachers and presents at mathematics education conferences around the world. Rosemary has written a range of innovative and practical classroom resources to help young children build their mathematical understanding. She has authored early childhood mathematics programs for Australia and the United States (Growing with Mathematics Pre-K and K, Stepping Stones). Her main goal is to translate theory into practical ideas for use by teachers. Rosemary was a Senior Lecturer in Mathematics Education for over 35 years at Queensland University of Technology in Brisbane, Australia. She is currently a consultant for ORIGO Education in Australia, the United States and Thailand.