Ingrid Hamso is an upper school mathematics teacher at Washington International School and an assistant examiner for the International Baccalaureate Diploma Program.She has been teaching mathematics at WIS for 13 years and mathematics and physics in Norwegian public schools for 11 years. She uses Project Zero ideas daily in her classroom and is a workshop presenter at PZ conferences. Ingrid earned an M.A. in pure mathematics from the University of Oslo, Norway, and her teacher certification from the Norwegian Ministry of Education. At WISSIT 2014 Ingrid is co-presenting an interactive course.