Ladel, S., & Kortenkamp U.  (Submitted).  Number concepts ?- processes of internalization and externalization by the use of multi-touch technology Silke Ladel and Ulrich Kortenkamp.  Early Mathematics Learning.  

El-Demerdash, M., & Kortenkamp U.  (In Press).  The Development of an Instrument to Measure Geometric Creativity.   

[Gast]  (2014).  Early Mathematics Learning.  (Kortenkamp, U., Brandt B., Benz C., Krummheuer G., Ladel S., & Vogel R., Ed.). 

Ladel, S., & Kortenkamp U.  (2013).  An activity-theoretic approach to multi-touch tools in early maths learning.  The International Journal for Technology in Mathematics Education. 20, 

Ladel, S., & Kortenkamp U.  (2013).  Designing a technology based learning environment for place value using artifact-centric activity theory.  (Lindmeier, A. M., & Heinze A., Ed.).Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education. Mathematics learning across the life span. 1, 188-192.

Kistener, S., Burns B., Vollmeyer R., & Kortenkamp U.  (2013).  An Explorative Study of Search of Model Space in Problem Solving.   

Kistener, S., Burns B., Vollmeyer R., & Kortenkamp U.  (2013).  An Explorative Study of Search of Model Space in Problem Solving.   

Hoffkamp, A., Kortenkamp U., & Seidel S.  (2013).  Handreichung zur Situation mathematischer Vorkurse an sachsen-anhaltischen Hochschulen und Vorschläge zu deren didaktisch-methodischer Ausgestaltung.   

Kortenkamp, U.  (2013).  Madipedia ? Das Wiki für die Mathematikdidaktik.  (Fleckenstein, S., Ed.).Georg-Cantor-Zeitschrift. 15, 25-39.

Libbrecht, P., & Kortenkamp U.  (2013).  The Role of Metadata in the Design of Educational Activities.  Proceedings of CERME 8, Antalya.  

Kortenkamp, U., Winter C., & Zöllner J.  (2013).  Stein für Stein: Mauern bauen ? Strukturen erkennen.  Grundschulunterricht.  

Libbrecht, P., Kortenkamp U., Rebholz S., & Müller W.  (2013).  Tales of a Companion Teacher Analytics.  (Vatrapu, R., Ed.).Proceedings of the 2nd International Workshop on Teaching Analytics (IWTA-2013).  

Richter-Gebert, J., & Kortenkamp U. H.  (2012).  The Cinderella.2 Manual ? Working with the Interactive Geometry Software.   

Ladel, S., & Kortenkamp U.  (2012).  Early maths with multi-touch ? an activity-theoretic approach.  Proceedings of POEM 2012.  

Bescherer, C., Herding D., Kortenkamp U., Müller W., & Zimmermann M.  (2012).  E-learning Tools with Intelligent Assessment and Feedback.  (Graf, S., Lin F., Kinshuk, & McGreal R., Ed.).Intelligent and Adaptive Learning Systems: Technology Enhanced Support for Learners and Teachers.  

Kortenkamp, U.  (2012).  Interaktives Whiteboard, iPad & Co. ? das Klassenzimmer der Zukunft.   

Kistner, S., Burns B., Kortenkamp U., & Vollmeyer R.  (2012).  Learning with an interactive physics programme.   

Ladel, S., & Kortenkamp U.  (2011).  An activity-theoretic approach to multi-touch tools in early maths learning.  Proceedings of ATATEMLO 2011 in Paris.  

[Gast]  (2011).  Computerwerkzeuge und Prüfungen / Aufgaben mit Technologieeinsatz im Mathematikunterricht. Bericht über die 24. und 25. Arbeitstagung des Arbeitskreises Mathematikunterricht und Informatik.  (Kortenkamp, U., Lambert A., & Zeimetz A., Ed.). 

Kortenkamp, U.  (2011).  Die etwas andere Vorlesung: AnOrMaL.  (Krohn, T., Malitte E., Richter G., Richter K., Schöneburg S., & Sommer R., Ed.).Mathematik für alle - Wege zum Öffnen von Mathematik. Mathematikdidaktische Ansätze. Festschrift für Wilfried Herget.  

Ladel, S., & Kortenkamp U.  (2011).  Finger-Symbol-Sets and Multi-Touch for a better understanding of numbers and operations.  Proceedings of CERME 7, Rzeszow.  

Trgalova, J., Kortenkamp U., Jahn A P., Libbrecht P., Mercat C., Recio T., et al.  (2011).  I2Geo.net ? a platform for sharing dynamic geometry resources all over Europe.   

Ladel, S., & Kortenkamp U.  (2011).  Implementation of a multi-touch-environment supporting finger symbol sets.  Proceedings of CERME 7, Rzeszow.  

Kortenkamp, U.  (2011).  Interoperable Interactive Geometry for Europe.  The Electronic Journal of Mathematics and Technology. 5, 

Kortenkamp, U.  (2011).  Interoperable Interactive Geometry for Europe.  The Electronic Journal of Mathematics and Technology. 5, 

Kortenkamp, U., & Laborde C.  (2011).  Interoperable Interactive Geometry for Europe: an introduction.  ZDM ? The International Journal on Mathematics Education.  1-3.

Kortenkamp, U., & Blessing A. M.  (2011).  VideoClipQuests as an E-Learning Pattern.  (Kohls, C., & Wedekind J., Ed.).Investigations on E-Learning Patterns: Context Factors, Problems, and Solutions.  237-248.

Kortenkamp, U., & Dohrmann C.  (2011).  ???''??????????????.  ????.  

Libbrecht, P., Kortenkamp U., & Mercat C.  (2010).  Crossing Cultural Boundaries with Long Term Interactive Geometry Resources.   

Kortenkamp, U., & Kreis Y.  (2010).  Konstruktionsbeschreibungen und DGS.  Beiträge zum Mathematikunterricht. Vorträge auf der 44. Tagung für Didaktik der Mathematik in München.  501-504.

Müller, W., & Kortenkamp U.  (2010).  Learning Programming with Ruby.  Proceedings of the IFIP Workshop "New developments in ICT and Informatics education''.  

Richter-Gebert, J., & Kortenkamp U.  (2010).  The power of scripting: DGS meets programming.  Acta Didactica Napocensia. 3, 67-78.

Kortenkamp, U., Bescherer C., & Spannagel C.  (2010).  Schnittstellenaktivität Hochschul-Mathematikdidaktik.  Beiträge zum Mathematikunterricht. Vorträge auf der 44. Tagung für Didaktik der Mathematik in München.  61-68.

Kortenkamp, U., & Dohrmann C.  (2010).  User Interface Design for Dynamic Geometry Software.  Proceedings of CADGME 2009. 3, 59-66.

Blessing, A. M., & Kortenkamp U.  (2010).  VideoClipQuests as a New Setup For Learning.  (Spector, M. J., Ifenthaler D., Isaías P., Kinshuk, & Sampson D. G., Ed.).Learning and Instruction in the Digital Age: Making a Difference through Cognitive Approaches, Technology-facilitated Collaboration and Assessment, and Personalized Communications.  

Kortenkamp, U., & Richter-Gebert J.  (2009).  Blended Experimentation with DGS.  Proceedings of CADGME 2009.  

Spannagel, C., & Kortenkamp U.  (2009).  Demonstrating, Guiding, and Analyzing Processes in Dynamic Geometry Systems.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Kortenkamp, U., & Rolka K.  (2009).  "Der Boxplot ist nur von einzelnen Werten abhängig" ? Dateninterpretation durch Computereinsatz schulen.  Beiträge zum Mathematikunterricht. Vorträge auf der 43. Tagung für Didaktik der Mathematik in Oldenburg.  

El-Demerdash, M., & Kortenkamp U.  (2009).  The Effectiveness of an Enrichment Program Using Dynamic Geometry Software in Developing Mathematically Gifted Students' Geometric Creativity.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Kortenkamp, U.  (2009).  Homogene Koordinaten.  mathematik lehren. 154, 

Abánades, M., Botana F., Escribano J., Hendriks M., Kortenkamp U., Kreis Y., et al.  (2009).  The Intergeo File Format in Progress.  Proceedings of the 22nd OpenMath Meeting.  

Abánades, M., Botana F., Escribano J., Hendriks M., Kortenkamp U., Kreis Y., et al.  (2009).  The Intergeo File Format in Progress.  Proceedings of the 22nd OpenMath Meeting.  

Libbrecht, P., Kortenkamp U., & Mercat C.  (2009).  I2Geo: a Web-Library of Interactive Geometry.  (Sojka, P., Ed.).Proceedings of the 2nd Workshop Towards a Digital Mathematics Library (DML-2009).  

Kortenkamp, U., Blessing A. M., Dohrmann C., Kreis Y., Libbrecht P., & Mercat C.  (2009).  Interoperable Interactive Geometry For Europe ? First Technological and Educational Results and Future Challenges of the Intergeo Project.  Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Kortenkamp, U., Blessing A. M., Dohrmann C., Kreis Y., Libbrecht P., & Mercat C.  (2009).  Interoperable Interactive Geometry For Europe ? First Technological and Educational Results and Future Challenges of the Intergeo Project.  Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Kortenkamp, U.  (2009).  Lernbausteine Klammergebirge.   

Kortenkamp, U.  (2009).  Lernbausteine Zahlenmauern.   

Kortenkamp, U., Modrow E., Oldenburg R., Poloczek J., & Rabel M.  (2009).  Objektorientierte Modellierung ? aber wann und wie?.  LOG-IN.  22-28.

Fest, A., & Kortenkamp U.  (2009).  Process Orientated Learning Environments For Interactive Geometry Lessons.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teachingh International Conference on Technology in Mathematics Teaching.  

Ladel, S., & Kortenkamp U.  (2009).  Realisations of MERS (Multiple Extern Representations) and MELRS (Multiple Equivalent Linked Representations) in Elementary Mathematics Software.  (Durand-Guerrier, V., Soury-Lavergne S., & Arzarello F., Ed.).Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Fest, A., & Kortenkamp U.  (2009).  Teaching Graph Algorithms with Visage.  Teaching Mathematics and Computer Science. 7, 35-50.

Kortenkamp, U., & Rolka K.  (2009).  Using Technology in the Teaching and Learning of Box Plots.  (Durand-Guerrier, V., Soury-Lavergne S., & Arzarello F., Ed.).Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education. January 28th - February 1st 2009, Lyon (France).  

Kortenkamp, U., Dohrmann C., Kreis Y., & Dording C.  (2009).  Using the Intergeo Platform for Teaching and Research.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Kortenkamp, U., Dohrmann C., Kreis Y., & Dording C.  (2009).  Using the Intergeo Platform for Teaching and Research.  (Bardini, C., Fortin C., Oldknow A., & Vagost D., Ed.).Proceedings of the 9th International Conference on Technology in Mathematics Teaching.  

Blessing, A., & Kortenkamp U.  (2009).  VideoClipQuests as an E-Learning Pattern.  Proceedings of the E-Learning Patterns Workshop 2009.  

Ladel, S., & Kortenkamp U.  (2009).  Virtuell-enaktives Arbeiten mit der ?Kraft der Fünf''.  MNUprimar.  

Kortenkamp, U.  (2008).  Algorithmen im Mathematikunterricht.  (Kortenkamp, U., Weigand H-G., & Weth T., Ed.).Informatische Ideen im Mathematikunterricht. Bericht über die 23. Arbeitstagung des Arbeitskreises Mathematikunterricht und Informatik.  77?86.

Richter-Gebert, J., & Kortenkamp U.  (2008).  Cinderella ? Online-Experimente der Geometrie und Physik.  (Greuel, G-M., Ed.). 

Kortenkamp, U., & Richter-Gebert J.  (2008).  Cinderella.2 ? Geometrie und Physik im Dialog.  Computeralgebra-Rundbrief.  

Blessing, A. M., & Kortenkamp U.  (2008).  Der Einsatz von VideoClipQuests in Moodle.  Vorträge auf der 5. Internationalen Moodle Konferenz 2008 in Klagenfurt.  

Kortenkamp, U., & Fest A.  (2008).  From CAS/DGS Integration to Algorithms in Educational Math Software.  Proceedings of ATCM 08.  

[Gast]  (2008).  Informatische Ideen im Mathematikunterricht. Bericht über die 23. Arbeitstagung des Arbeitskreises Mathematikunterricht und Informatik.  (Kortenkamp, U., Weigand H-G., & Weth T., Ed.). 

Kortenkamp, U., & Kreis Y.  (2008).  Intergeo ? Interoperable Interactive Geometry for Europe.  Beiträge zum Mathematikunterricht. Vorträge auf der 42. Tagung für Didaktik der Mathematik in Budapest.  

Kortenkamp, U., & Kreis Y.  (2008).  Intergeo ? Interoperable Interactive Geometry for Europe.  Beiträge zum Mathematikunterricht. Vorträge auf der 42. Tagung für Didaktik der Mathematik in Budapest.  

Kortenkamp, U.  (2008).  Math Unit Testing ? A New Approach to the Use of Technology in Teaching.  (Laborde, C., Ed.). 

Kortenkamp, U.  (2008).  A Technology Based Approach to Discrete Mathematics in the Classroom.  (Campbell, S., & Grenier D., Ed.).Proceedings of ICME-11, TSG 15.  

Blessing, A., & Kortenkamp U.  (2008).  VideoClipQuests as a New Setup For Learning.  (Kinshuk, Sampson D. G., Spector M. J., Isaías P., & Ifenthaler D., Ed.).Proceedings of the IADIS International Conference on Cognition and Exploratory Learning in Digital Age (CELDA 2008).  343?346.

Kortenkamp, U., & Müller W.  (2008).  Wo ist denn hier das Undo?.  Online Tutoring Journal. 3, 

Richter-Gebert, J., & Kortenkamp U.  (2008).  Zusammenspiel: Mathematik und Architektur.  (Behrends, E., Gritzmann P., & Ziegler G. M., Ed.).? und Co..  342?349.

Kortenkamp, U.  (2007).  CAS und DGS im Dialog ? oder: Wieviel CAS braucht der Mensch?.  Beiträge zum Mathematikunterricht. Vorträge auf der 41. Tagung für Didaktik der Mathematik in Berlin.  

Spannagel, C., & Kortenkamp U.  (2007).  CleverPHL ? ein Werkzeug zum flexiblen Umgang mit Konstruktionsprozessen in DGS.  Beiträge zum Mathematikunterricht. Vorträge auf der 41. Tagung für Didaktik der Mathematik in Berlin.  

Kortenkamp, U.  (2007).  Combining CAS and DGS ? Towards Algorithmic Thinking.  (Li, S., Wang D., & Zhang J-Z., Ed.).Symbolic Computation and Education.  150-173.

Kortenkamp, U.  (2007).  Guidelines for Using Computers Creatively in Mathematics Education.  (Ko, K H., & Arganbright D., Ed.).Enhancing University Mathematics: Proceedings of the First KAIST International Symposium on Teaching. 14, 129?138.

Spannagel, C., & Kortenkamp U.  (2007).  Prozesse beim Lernen mit DGS: Aufzeichnung, Wiedergabe, Analyse.  (Ludwig, M., Ed.).Tagungsband des Arbeitskreis Geometrie der GDM.  

Kortenkamp, U.  (2007).  Punkt- und Achsenspiegelungen mit DGS.  (Beckmann, A., Ed.).Lernen mit Dynamischen Geometriesystemen. 3, 5-28.

Fest, A., & Kortenkamp U.  (2007).  Teaching Graph Algorithms with Visage.  (Sárvári, C., & Lavicza Z., Ed.).Proceedings of CADGME 2007 in Pécs.  

Kortenkamp, U.  (2007).  Zur Reaktivierung der Geometrie in der Schule.  Beiträge zum Mathematikunterricht. Vorträge auf der 41. Tagung für Didaktik der Mathematik.  

Kortenkamp, U.  (2006).  Algorithmische Geometrie im Unterricht.  Der Mathematikunterricht. 52, 32-39.

Müller, W., Bescherer C., Kortenkamp U., & Spannagel C.  (2006).  Intelligent Computer-aided Assessment in the Math Classroom: State-of-the-art and Perspectives.  Proceedings of the IFIP WG 3.1, 3.3, & 3.5 Joint Conference Imagining the future for ICT and Education, Alesund, Norway.  

Kortenkamp, U.  (2006).  Punkt- und Achsenspiegelungen.   

Kortenkamp, U.  (2006).  Paving the Alexanderplatz Efficiently with a quasi-periodic tiling.  (Duvernoy, S., & Pedemonte O., Ed.).Nexus VI: Architecture and Mathematics.  57-62.

Kortenkamp, U.  (2006).  Terme erklimmen. Klammergebirge als Strukturierungshilfe.  mathematik lehren. 136, 13.

Kortenkamp, U.  (2005).  Dokumentation, Diskussion und Protokolle: Wie kommuniziert man Geometrie im Internetzeitalter?.  (Engel, J., Vogel R., & Wessolowski S., Ed.).Strukturieren ? Modellieren ? Kommunizieren. Leitbilder mathematischer und informatischer Aktivitäten.  141-150.

Kortenkamp, U.  (2005).  Experimentieren und Publizieren.  (Bender, P., Herget W., Weigand H-G., & Weth T., Ed.).WWW und Mathematik - Lehren und Lernen im Internet, Tagungsband der 21. Arbeitstagung des Arbeitskreis Mathematikunterricht und Informatik in Dillingen/Donau.  120-126.

Kortenkamp, U.  (2005).  Guidelines for Using Computers Creatively in Mathematics Education.  (Arganbright, D., Ed.).Proceedings of the 1st KAIST Symposium on Enhancing University Mathematics Teaching.  

Kortenkamp, U.  (2005).  Klammergebirge als Strukturierungshilfe in der Algebra.  Beiträge zum Mathematikunterricht. Vorträge auf der 39. Tagung für Didaktik der Mathematik in Bielefeld.  

Kortenkamp, U.  (2005).  Visage ? Visualisierung von Graphenalgorithmen.  Beiträge zum Mathematikunterricht. Vorträge auf der 39. Tagung für Didaktik der Mathematik.  

Geschke, A., Kortenkamp U., Lutz-Westphal B., & Materlik D.  (2005).  Visage ? Visualization of Algorithms in Discrete Mathematics.  Zentralblatt für Didaktik der Mathematik. 37, 395-401.

Brehm, E., & Kortenkamp U.  (2004).  Advanced Teaching of Geometry with Interactive Tools.  (Nagaoka, R., Ishi H., & Hitzer E., Ed.).Proceedings of RIMS-Workshop ITMga 2003.  

Kortenkamp, U.  (2004).  Experimental mathematics and proofs ? what is secure mathematical knowledge?.  Zentralblatt für Didaktik der Mathematik. 36, 61?66.

Kortenkamp, U., & Materlik D.  (2004).  Geometry teaching in wireless classroom environments using Java and J2ME.  Science of Computer Programming. 53, 71?85.

Kortenkamp, U.  (2004).  Kommunizieren und Dokumentieren von Geometrie.  Beiträge zum Mathematikunterricht. Vorträge auf der 38. Tagung für Didaktik der Mathematik in Augsburg.  

Kortenkamp, U., & Materlik D.  (2004).  Pen-based input of geometric constructions.  (Libbrecht, P., Ed.).Proceedings of MathUI 2004.  

Kortenkamp, U., & Richter-Gebert J.  (2004).  Using Automatic Theorem Proving to Improve the Usability of Geometry Software.  (Libbrecht, P., Ed.).Proceedings of MathUI 2004.  

Kortenkamp, U., & Materlik D.  (2004).  Vernetztes Lehren und Lernen im Mathematikunterricht.  (Fellbaum, K., Rebensburg K., & Schwill A., Ed.).Grundfragen multimedialen Lehrens und Lernens. Tagungsband des 2. Workshops GML2004.  

Richter-Gebert, J., & Kortenkamp U.  (2004).  Zusammenspiel: Mathematik und Architektur.  aviso - Zeitschrift für Wissenschaft und Kunst in Bayern. 1, 26?33.

Kirstein, J., Nordmeier V., Rudolf R., Sabina J., & Ulrich K.  (2003).  Empfehlungen zur Ausstattung von Fachraum-Medieninseln für den mathematischen und naturwissenschaftlichen Unterricht.   

Kortenkamp, U., & Weth T.  (2003).  Syntaxfreie Konstruktionsbeschreibungen mit Cinderella.  Beiträge zum Mathematikunterricht. Vorträge auf der 37. Tagung für Didaktik der Mathematik in Dortmund.  

Richter-Gebert, J., & Kortenkamp U. H.  (2003).  ?????. ??????????????.   

Richter-Gebert, J., & Kortenkamp U. H.  (2002).  Complexity issues in Dynamic Geometry.  (Cucker, F., & Rojas M. J., Ed.).Foundations of Computational Mathematics (Proceedings of the Smale Fest 2000).  

Richter-Gebert, J., & Kortenkamp U.  (2002).  Dynamische Geometrie: Grundlagen und Möglichkeiten.  (Weth, T., Ed.).Tagungsband zum Nürnberger Kolloquium zur Didaktik der Mathematik 2002.  369-372.

Richter-Gebert, J., & Kortenkamp U.  (2002).  Kalenderblatt Juni 2002.   

Kortenkamp, U.  (2002).  Kegelschnitte und Projektive Geometrie.  mathematik lehren. 112, 16?20.

Kortenkamp, U.  (2002).  Making the move: The next version of Cinderella.  (Cohen, A. M., Gao X-S., & Takayama N., Ed.).Proceedings of the First International Congress of Mathematical Software.  208?216.

Richter-Gebert, J., & Kortenkamp U. H.  (2001).  Cinderella ? Programa interactivo di Geometria.   

Richter-Gebert, J., & Kortenkamp U. H.  (2001).  Cinderella ? Software interattivo di geometria.   

Kortenkamp, U., & Richter-Gebert J.  (2001).  Decision complexity in Dynamic Geometry.  (Wang, D., Ed.).Proceedings of ADG 2000.  167?172.

Kortenkamp, U.  (2001).  Die interaktive Geometrie-Software Cinderella.  (Beck, U., & Sommer W., Ed.).Tagungsband Learntec 2001. 2, 525?532.

Richter-Gebert, J., & Kortenkamp U.  (2001).  A dynamic setup for elementary geometry.  Proceedings of MTCM 2000.  

Kortenkamp, U.  (2001).  Dynamische Geometrie.  Mitteilungen der DMV. 3, 33?40.

Kortenkamp, U.  (2001).  The future of mathematical software.  Proceedings of MTCM 2000.  

Richter-Gebert, J., & Kortenkamp U.  (2001).  Grundlagen Dynamischer Geometrie.  (Henn, H-W., Elschenbroich H-J., & Gawlick T., Ed.).Zeichnung ? Figur ? Zugfigur.  123?144.

Richter-Gebert, J., & Kortenkamp U. H.  (2000).  Cinderella ? die interaktive Geometriesoftware.  Clever lernen ? super Noten!.  

Richter-Gebert, J., & Kortenkamp U. H.  (2000).  Cinderella ? Nachmittagssoftware im Unterricht?.  Rundgang. 2, 

Kortenkamp, U., & Richter-Gebert J.  (2000).  Decision complexity in Dynamic Geometry.  (Wang, D., Ed.).Proceedings of ADG 2000. 3, 216?220.

Richter-Gebert, J., & Kortenkamp U. H.  (2000).  Die interaktive Geometry-Software Cinderella.   

Richter-Gebert, J., & Kortenkamp U.  (2000).  Dynamic aspects in computational geometry.  (Montes, A., Ed.).Proceedings of the EACA 2000.  51?61.

Richter-Gebert, J., & Kortenkamp U.  (2000).  Euklidische und nicht-Euklidische Geometrie in Cinderella.  Journal für Mathematikdidaktik. 22, 303?324.

Kortenkamp, U.  (2000).  Foundations of Dynamic Geometry.  Journal für Mathematikdidaktik. 21, 161?162.

Kortenkamp, U.  (2000).  Internetfähige Software fürs Lernen im 21. Jahrhundert.  FU-Nachrichten. 6, 

Kortenkamp, U.  (2000).  Kontinuität in Dynamischer Geometrie.  Beiträge zum Mathematikunterricht. Vorträge auf der 35. Tagung für Didaktik der Mathematik in Potsdam.  358?361.

Kortenkamp, U. H., & Richter-Gebert J.  (1999).  Das Cinderella-Projekt.  (Maffeis, S., Toenniessen F., & Zeidler C., Ed.).Erfahrungen mit Java.  381?401.

Richter-Gebert, J., & Kortenkamp U. H.  (1999).  Dynamic Geometry I: The Problem of Continuity.  Abstracts 15th European Workshop Comput. Geom..  51?53.

Kortenkamp, U. H., & Richter-Gebert J.  (1999).  Dynamic Geometry II: Applications.  Abstracts 15th European Workshop Comput. Geom..  109?111.

Kortenkamp, U. H., & Richter-Gebert J.  (1999).  Euklidische und Nicht-Euklidische Geometrie mit Cinderella.  (Weth, T., Ed.).Tagungsband zum Nürnberger Kolloquium zur Didaktik der Mathematik 1999.  

Kortenkamp, U.  (1999).  Foundations of Dynamic Geometry.   

Kortenkamp, U.  (1999).  Geometrie lehren mit dem Internet.  Interface. 2, 26?29.

Richter-Gebert, J., & Kortenkamp U. H.  (1999).  The Interactive Geometry Software Cinderella.   

Kortenkamp, U. H., & Richter-Gebert J.  (1999).  Shrink-Wrapped Java in Education.   

Kortenkamp, U. H., & Richter-Gebert J.  (1998).  Geometry and education in the Internet age.  (Ottmann, T., & Tomek I., Ed.).Ed-Media & Ed-Telecom 98. Proceedings of the Tenth World Conference on Educational Multimedia and Hypermedia & World Conference on Educational Telecommunications, Freiburg, Germany, June 20-25, 1998.  

Kortenkamp, U.  (1997).  Every simplicial polytope with at most d+4 vertices is a quotient of a neighborly polytope.  Discrete & Computational Geometry. 18, 455?462.

Kortenkamp, U., Richter-Gebert J., Sarangarajan A., & Ziegler G. M.  (1997).  Extremal properties of 0/1-polytopes.  Discrete & Computational Geometry. 17, 439?448.

Richter-Gebert, J., & Kortenkamp U.  (1997).  Geometry and education in the Internet age.   

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