Rolf Ahrens, B.Ed. M.Ed. was a full time teacher and school principal with the Vancouver School Board for over forty years. He worked as a coordinator of professional development for the school district and served as a supervisor of instruction. For ten years he served as a sessional lecturer at the University of British Columbia focusing on teaching methodology in elementary science and the supervision of preservice teachers. Rolf is a senior faculty member of William Glasser International and a past president of Glasser Canada. He was a counsellor for Oak Counselling in Vancouver for eleven years. He lives with his wife Norma in Surrey, British Columbia, Canada. He can be seen frequently playing 'Wifflecroque', a game which he and his grandsons have invented.