@booklet {TrgKorJahLibMerRecSou-IPSDGROE-2010,
	title = {I2Geo.net {\textendash} a platform for sharing dynamic geometry resources all over Europe},
	year = {2011},
	keywords = {poster},
	author = {Trgalova, Jana and Kortenkamp, Ulrich and Jahn, Ana Paula and Libbrecht, Paul and Mercat, Christian and Recio, Tomas and Soury-Lavergne, Sophie}
}
@conference {LadKor-RMMERMMELREMS-2009,
	title = {Realisations of {MERS} (Multiple Extern Representations) and {MELRS} (Multiple Equivalent Linked Representations) in Elementary Mathematics Software},
	booktitle = {Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France)},
	year = {2009},
	abstract = {<p>
	Assumptions of multiple mental representations lead to the presumption of an enhanced mathematical learning, especially of the process of internalization, due to MERs (Ainsworth 1999) and MELRs (Harrop 2003). So far, most educational software for mathematics at the primary level aims to help children to automatize mathematical operations, whereby symbolical representations are dominating. However, what is missing is software and principles for its design that support the process of internalization and the learning of external representations and their meaning themselves {\textendash} in primary school these are in particular symbols. This paper summarizes the current state of research and presents a prototype that aims to the above-mentioned purpose.</p>
},
	keywords = {refereed},
	url = {http://www.inrp.fr/publications/edition-electronique/cerme6/wg7-01-ladel.pdf},
	author = {Ladel, Silke and Kortenkamp, Ulrich},
	editor = {Durand-Guerrier, Viviane and Soury-Lavergne, Sophie and Arzarello, Ferdinando}
}
@conference {KorRol-UTTLP-2009,
	title = {Using Technology in the Teaching and Learning of Box Plots},
	booktitle = {Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France)},
	year = {2009},
	abstract = {<p>
	Box plots (or box-and-whisker-plots) can be used as a powerful tool for visualising sets of data values. Nevertheless, the information conveyed in the representation of a box plot is restricted to certain aspects. In this paper, we discuss both the potential and limitations of box plots. We also present a design for an empirical study in which the use of a variety of tasks explicitly addresses this duality. The activities used in the study are based on an interactive box plot applet that surpasses the currently available tools and offers new ways of experiencing box plots.</p>
},
	keywords = {refereed},
	url = {http://www.inrp.fr/publications/edition-electronique/cerme6/wg7-03-kortenkamp-rolka.pdf},
	author = {Kortenkamp, Ulrich and Rolka, Katrin},
	editor = {Durand-Guerrier, Viviane and Soury-Lavergne, Sophie and Arzarello, Ferdinando}
}
