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

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.   

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).  

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

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.  

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.  

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.  

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.  

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.