Nieszporek, R. & Biehler, R. (In Press). Retrospective competence assessment in a PD course on teaching statistics with digital tools in upper secondary schools. In U. T. Jankvist, M. van den Heuvel-Panhuizen & M. Veldhuis (Hrsg.), Proceedings of the Eleventh Congress of the European Society for Research in Mathematics Education. Utrecht, Niederlande: Freudenthal Group & Freudenthal Institute, Utrecht University und ERME.
Nieszporek, R. & Biehler, R. (In Press). Retrospective competence assessment in a PD course on teaching statistics with digital tools in upper secondary schools. In U. T. Jankvist, M. van den Heuvel-Panhuizen & M. Veldhuis (Hrsg.), Proceedings of the Eleventh Congress of the European Society for Research in Mathematics Education. Utrecht, Niederlande: Freudenthal Group & Freudenthal Institute, Utrecht University und ERME.