"Dig where you stand" 6 Proceedings of the sixth International Conference on the History of Mathematics Education - Furinghetti, Fulvia; Barbin, Évelyne 1949-; Kristín Bjarnadóttir; Karp, Alexander; Moussard, Guillaume; Prytz, Johan; Schubring, Gert 1944- (Schriften zur Geschichte der Mathematik und ihrer Didaktik, 2020)