Rosemary has an extensive background in mathematics education in Australia, in teaching and research. Internationally she has worked in Hong Kong and with UNICEF in North Korea. She is an acknowledged expert at using Rasch measurement techniques and has collaborated with some of the top specialists in this field. She also uses other statistical and quantitative methods, as well as a range of qualitative approaches, usually in some form of mixed method research. Her specific research interests include teachers' pedagogical content knowledge, statistical literacy, mental computation, and assessment of mathematics and numeracy.