@conference {19825,
	title = {Introduction to the papers and posters of Working Group 15: Technologies and resources in mathematics education},
	booktitle = {Proceedings of the Eighth Congress of the European Society for Research in Mathematics Education (CERME 8)},
	year = {2013},
	pages = {2498-2503},
	publisher = {Middle East Technical University and ERME},
	organization = {Middle East Technical University and ERME},
	address = {Ankara, Turkey},
	author = {J Trgalova and M Maracci and G Psycharis and H-G. Weigand},
	editor = {U Behiye and {\c C} Haser and M A Mariotti}
}
