@inproceedings{4ac743f861454510b2a0260b1a7a6c6c,
title = "Unsolvable mathematical problems in kindergarten: Are they appropriate",
author = "Dina Tirosh and Pessia Tsamir and Esther Levenson and Michal Tabach and Ruthi Barkai",
year = "2015",
language = "الإنجليزيّة",
isbn = "9788072908448",
pages = "2010--2016",
editor = "Konrad Krainer and Na{\v d}a Vondrov{\'a}",
booktitle = "Proceedings of the Ninth Congress of the European Society for Research in Mathematics Education",
note = "CERME9- The Ninth Congress of European Research in Mathematics Education ; Conference date: 04-02-2015 Through 08-02-2015",
}