Aisling Twohill is a lecturer in Mathematics Education, in the School of STEM Education, Innovation and Global Studies. In 2012 Aisling was awarded the Michael Jordan Fellowship of St Patrick's College, and she held this position until September 2015.Aisling completed her PhD in DCU, wherein she examined the algebraic thinking of children attending primary school in Ireland, within the context of shape patterning. Her research interests encompass the role of shape patterning in children's developing thinking; and assessment of children's thinking through task-based interviews. Other interests include the complex interplay between theory and practice in teacher education, interventions to stretch the thinking of all children, and the potential of mathematical literacy to support critical thinking and active citizenship.Aisling teaches on all Mathematics Education modules of the BEd, PMEP and MEd programmes and is a year head on the BEd programme. She supervises students at postgraduate level, where she has a particular interest in practicing teachers (primary and secondary) exploring progressive approaches to support children's thinking.Aisling's ongoing research projects include an international collaboration to develop materials for the teaching of algebra in senior primary and junior secondary school; and a collaborative project in DCU investigating the efficacy beliefs of student teachers about the teaching of mathematics.