Abstract
Open peer commentary on the article “Problematizing: The Lived Journey of a Group of Students Doing Mathematics” by Robyn Gandell & Jean-François Maheux.: We discuss mathematical problematizing as presented in the target article, the perspective of which we mostly share, and compare it with the case of in-service primary-school teachers engaged in the same mathematical activity. Also, we comment on related previous experimental research conducted in our research group, which suggests further developments in the spirit of the target article.