@inproceedings{31583, author = {{Hattermann, Mathias and Häsel-Weide, Uta and Wallner, Melina}}, booktitle = {{Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education }}, editor = {{Inprasitha, M. and Changsri, N. and Boonsena, N.}}, pages = {{9--15}}, title = {{{Conceptualiziation processes of 6th graders for rotational symmetry}}}, volume = {{3}}, year = {{2021}}, }