I will share several stories in which personal mathematical knowledge is either (unexpectedly) invoked, or is developed and strengthened, in a response to an instructional situation. I will further demonstrate how this knowledge is used to design tasks for teacher education.
Dr. Zazkis is a Professor of Mathematics Education at the Faculty of Education and associate member in the Department of Mathematics at the Simon Fraser University, Canada, where she has been employed for the past 26 years. Her research is in the area of undergraduate mathematics education, with a general focus on mathematical content knowledge of teachers and the ways in which this knowledge is acquired and modified. In 2016 Zazkis was appointed as Tier 1 Canada Research Chair, a prestigious recognition for excellence in research and research training.