@proceedings {457, title = {Begriffsbildung zum Winkel in der Sek I: Auf der Suche nach Grundvorstellungen}, journal = {48. Jahrestagung der Gesellschaft f{\"u}r Didaktik der Mathematik}, year = {2014}, pages = {301-304}, publisher = {WTM-Verlag.}, address = {Koblenz}, author = {Dohrmann, Christian and Ana Kuzle and J{\"u}rgen Roth and J. Ames} } @proceedings {456, title = {GeKoDyn: Eine Fortbildungsreihe zur dynamischen und kompetenzorientierten Sicht auf die euklidische Geometrie}, journal = {48. Jahrestagung der Gesellschaft f{\"u}r Didaktik der Mathematik}, year = {2014}, pages = {181{\textendash}184}, publisher = {WTM-Verlag.}, address = {Koblenz}, author = {Rolf Biehler and Ana Kuzle and Wilfried Dutkowski and Elschenbroich, Hans-J{\"u}rgen and Gaby Heintz}, editor = {J{\"u}rgen Roth and J. Ames} } @proceedings {461, title = {Characterization of preservice teachers{\textquoteright} patterns of metacognitive behavior and the use of Geometer{\textquoteright}s Sketchpad}, journal = {The didactics of mathematics: Approaches and issues. A Hommage to Mich{\`e}le Artigue}, year = {2012}, publisher = {Universit{\'e} Paris Diderot}, address = {Paris}, author = {Ana Kuzle and Michelle Artigue} } @conference {AbaBotEscHenKorKreLibMarMer-IFFP-2009, title = {The {I}ntergeo File Format in Progress}, booktitle = {Proceedings of the 22nd OpenMath Meeting}, year = {2009}, abstract = {In this paper we describe the ongoing effort to specify a com- mon file format for Interactive or Dynamic Geometry Systems (DGS). Our approach is based on the OpenMath standard, and uses its flexible extension mechanisms like Content Dictionaries. We discuss the various design decisions, the Content Dictionaries that have been defined, as well as open questions to be resolved.}, keywords = {Intergeo, refereed}, author = {Ab{\'a}nades, Miguel and Botana, Francisco and Escribano, Jes{\'u}s and Hendriks, Maxim and Kortenkamp, Ulrich and Kreis, Yves and Libbrecht, Paul and Marques, Daniel and Mercat, Christian} } @conference {AbaBotEscHenKorKreLibMarMer-IFFP-2009, title = {The {I}ntergeo File Format in Progress}, booktitle = {Proceedings of the 22nd OpenMath Meeting}, year = {2009}, abstract = {

In this paper we describe the ongoing effort to specify a com- mon file format for Interactive or Dynamic Geometry Systems (DGS). Our approach is based on the OpenMath standard, and uses its flexible extension mechanisms like Content Dictionaries. We discuss the various design decisions, the Content Dictionaries that have been defined, as well as open questions to be resolved.

}, keywords = {refereed}, author = {Ab{\'a}nades, Miguel and Botana, Francisco and Escribano, Jes{\'u}s and Hendriks, Maxim and Kortenkamp, Ulrich and Kreis, Yves and Libbrecht, Paul and Marques, Daniel and Mercat, Christian} } @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 = {

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.

}, 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 = {

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.

}, 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} } @conference {Kor-GUCCME-2007, title = {Guidelines for Using Computers Creatively in Mathematics Education}, booktitle = {Enhancing University Mathematics: Proceedings of the First KAIST International Symposium on Teaching}, series = {CBMS Issues in Mathematics Education}, volume = {14}, year = {2007}, pages = {129{\textendash}138}, publisher = {AMS}, organization = {AMS}, abstract = {

Computers are the ultimate tool for teaching: They provide mi- croworlds that can be explored; they can be forgiving and strict; they take account of everything that{\textquoteright}s happening; they can create maps of what the learner knows or still has to learn; they are fun to use; they provide interactive illustrations that enlighten those who use them {\textendash} or at least, that{\textquoteright}s what they could be or do. There are significant drawbacks: many people do not know what they could do with them; if they know it, they probably do not know how to make them do it; and, finally, it is not validated whether it is of any didactic value to use them in the way they are used. In this text, we present some basic guidelines that can help in designing and evaluating electronic material. Starting from an example, we identify some roles the computer can take and discuss their implications for the development of mathematics tools.

}, keywords = {refereed}, url = {http://www.ams.org/bookstore?fn=20\&arg1=cbmathseries\&item=CBMATH-14}, author = {Kortenkamp, Ulrich}, editor = {Ko, Ki Hyoung and Arganbright, Deane} } @conference {Kor-GUCCME-2005, title = {Guidelines for Using Computers Creatively in Mathematics Education}, booktitle = {Proceedings of the 1st KAIST Symposium on Enhancing University Mathematics Teaching}, year = {2005}, publisher = {KAIST}, organization = {KAIST}, address = {Daejon}, abstract = {

Computers are the ultimate tool for teaching: They provide microworlds that can be explored; they can be forgiving and strict; they take account of everything that{\textquoteright}s happening; they can create maps of what the learner knows or still has to learn; they are fun to use; they provide interactive illustrations that enlighten those who use them {\textendash} or at least, that{\textquoteright}s what they could be or do. There are significant drawbacks: many people do not know what they could do with them; if they know it, they probably do not know how to make them do it; and, finally, it is not validated whether it is of any didactic value to use them in the way they are used. In this text, we present some basic guidelines that can help in designing and evaluating electronic material. Starting from an example, we identify some roles the computer can take and discuss their implications for the development of mathematics tools.

}, keywords = {invited}, url = {http://kortenkamps.net/papers/2005/KAIST.pdf}, author = {Kortenkamp, Ulrich}, editor = {Arganbright, Deane} }