Biehler, R. & Nieszporek, R. (2017). Upper secondary teachers’ stages of concern related to curricular innovations before and after a professional development course on teaching probability and statistics including the use of digital tools. In T. Dooley & G. Gueudet (Hrsg.), Proceedings of the Tenth Congress of the European Society for Research in Mathematics Education, S. 2804–2811. Dublin, Ireland: DCU Institute of Education and ERME.
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Biehler, R. & Nieszporek, R. (2017). Upper secondary teachers’ stages of concern related to curricular innovations before and after a professional development course on teaching probability and statistics including the use of digital tools. In T. Dooley & G. Gueudet (Hrsg.), Proceedings of the Tenth Congress of the European Society for Research in Mathematics Education, S. 2804–2811. Dublin, Ireland: DCU Institute of Education and ERME.

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