Dame Iritana Tawhiwhirangi began her teaching career relieving for Sylvia Ashton-Warner and went on to help found the kohanga reo movement. Chris Laidlaw talks to Dame Iritana, who is of Ngati Porou, Ngati Kahungunu, Canadian and English descent, about her life, ideas and influences. From the Ideas collection: Influential Kiwis talk about their Influences