@inproceedings{e27e6ef1079c46be8e2fd131432f0745,
title = "Rotational symmetry: Semiotic potential of a transparency toolkit",
author = "Yip-Cheung Chan and Leung, \{Allen Yuk-Lun\}",
year = "2013",
month = jul,
language = "English",
pages = "37--46",
booktitle = "Proceedings of the international Conference for ICMI Study 22, Oxford, UK, July 2013. Task Design in Mathematics Education",
note = "The international Conference for ICMI Study 22, Task Design in Mathematics Education ; Conference date: 22-07-2013 Through 26-07-2013",
}