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Dr. Yves Kreis

Yves Kreis

Senior lecturer

Faculty or Centre Faculty of Humanities, Education and Social Sciences
Department Department of Education and Social Work
Postal Address Université du Luxembourg
Maison des Sciences Humaines
11, Porte des Sciences
L-4366 Esch-sur-Alzette
Campus Office MSH, E03 35-230
Email
Telephone (+352) 46 66 44 9329

Yves Kreis is a Senior Lecturer at the Institute for Teaching & Learning of the Department of Education and Social Work of the Faculty of Humanities, Education and Social Sciences of the University of Luxembourg. He has a PhD in educational sciences (Dr. paed.) from the University of Education Ludwigsburg (Germany).

He studied mathematics and computer science ("Diplôme en Mathématiques") at the University of Fribourg (Switzerland), where he worked as an undergraduate assistant for three years. Before joining the University, he worked for several years as a teacher in various Luxembourgish Primary Schools and as a mathematics teacher in several Luxembourgish Secondary Schools.

Research interests:

  • Primary mathematics education
  • Educational technology in (primary) mathematics education
  • Mathematics teacher training and teacher professionalisation
  • STEAM in primary, secondary, and tertiary education

Memberships:

Further Contact:

Projects:

Curriculum Vitae:

Last updated on: Saturday, 31 December 2022

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In press

Houghton, T., Lavicza, Z., Weinhandl, R., Rhamadi, I., Békési, B., & Kreis, Y. (in press). Expectation Shock in Education: Utilising Industry SERVQUAL to Enhance Student Perception of STEAM and STEAM Careers. International Journal of Technology Enhanced Learning.
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2023

Haas, B., Lavicza, Z., & Kreis, Y. (2023). Parent’s experience in remote learning with digital and physical mathematical modelling. Research and Practice in Technology Learning, 18.
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2022

Haas, B., Kreis, Y., Lavicza, Z., Houghton, T., & Fenyvesi, K. (2022, February 04). Exploring Mathematical concepts in an Ecosystem of STEAM Learning, consisting of Physical Objects, Digital Toolkits and Tutoring Systems, 3D Printing and Outdoor Mathematical Trails. Poster session presented at Twelfth Congress of the European Society for Research in Mathematics Education (CERME 12), Online, Italy.
Haas, B., Kreis, Y., & Lavizcza, Z. (2022, October 06). Augmented Reality in primary education: New learning opportunities for students with learning difficulties in mathematics education. Paper presented at International Symposium on Augmented and Virtual Reality in Mathematics Education, Online, Germany.
Haas, B., Lavicza, Z., Houghton, T., & Kreis, Y. (2022). Evaluating Technology-Enhanced, STEAM-Based Remote Teaching With Parental Support in Luxembourgish Early Childhood Education. Frontiers in Education, 7(872479), 1-12.
Ulbrich, E., El Bedewy, S., Handl, J., Andjic, B., Kreis, Y., & Lavicza, Z. (2022, October 07). 3D Modelling for AR and 3D printing in Teacher Training. Paper presented at International Symposium on Augmented and Virtual Reality in Mathematics Education, Online, Germany.
Ulbrich, E., Hosic, R., Haas, B., Tejera, M., Anđić, B., Lavicza, Z., & Kreis, Y. (2022, December 16). Connecting culture to geometry - problem based learning across subjects. Paper presented at Doctoral Students' Conference: Tradition, Development & Innovation in Didactics - Early Career Researchers Conference (TDID - ERC), Online, România and Austria.
Ulbrich, E., Tejera, M., Haas, B., Andjic, B., Kreis, Y., Dana-Picard, T. N., & Lavizca, Z. (2022, September 12). 3D printed mathematics visualisations by STEAM teachers. Paper presented at CADGME 2022 Conference, Tel Aviv & Online, Israel.
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2021

Haas, B., Kreis, Y., & Lavicza, Z. (2021). Case study on augmented reality, digital and physical modelling with mathematical learning disabilities students in an elementary school in Luxemburg. International Journal for Technology in Mathematics Education, 28(3), 125-132.
Haas, B., Kreis, Y., & Lavicza, Z. (2021). Integrated STEAM Approach in Outdoor Trails with Elementary School Pre-service Teachers in Luxemburg. Educational Technology and Society, 24(4), 205-219.
Haas, B., Kreis, Y., & Lavicza, Z. (2021, April 01). The STEAM skilled child: How children can learn to apply STEAM skills to their living environment. Paper presented at Regular Course on Integrating ICT in Mathematics Education for Junior High School Mathematics Teachers, Online, Indonesia.
Haas, B., Kreis, Y., & Lavicza, Z. (2021, March 25). Mixed-methods research in STEAM outdoor trails in elementary school pre-service teacher training. Paper presented at Intensive training school in qualitative research design and research methods in mathematics education, Online, Slovakia.
Kreis, Y. (2021, January 14). MathEduc @ BScE. Paper presented at PhD Research Seminar, Online, Austria.
Kreis, Y., & Haas, B. (2021, June 24). Iterative STEAM design in primary grades and in pre-service teacher training. Paper presented at CADGME Online Gathering 2021, Online, Austria & Israel.
Kreis, Y., & Haas, B. (2021, April 07). Transition from traditional to hybrid to online courses for pre-service elementary school teachers at the University of Luxembourg: STEAM integrated approach in the project MathEduc @ BScE. Paper presented at ISEP Seminars On Novel Teaching Methodologies, Online, Portugal.
Kreis, Y., & Haas, B. (2021, February 17). 3D modelling for pre-service primary school teachers in mathematics education. Paper presented at 3D printing in STEAM Education seminar, Online, Austria.
Kreis, Y., Haas, B., & Lavicza, Z. (2021, June). eJMT Problem Corner: June 2021. The Electronic Journal of Mathematics & Technology.
Kreis, Y., Haas, B., & Lavicza, Z. (2021, May 27). First results of the iterative STEAM design process in 3D modelling and printing with pre-service teachers. Paper presented at Designing Innovations in STEAM Education Conference, Online, Austria.
Kreis, Y., Haas, B., & Lavicza, Z. (2021, March 19). 3D Modelling in online learning for pre-service elementary school teachers at the University of Luxembourg. Paper presented at Early-Career Researchers in STEAM Education Conference, Online, Austria.
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2020

Busana, G., Denis, B., Duflot-Kremer, M., Higuet, S., Kataja, L., Kreis, Y., Laduron, C., Meyers, C., Parmentier, Y., Reuter, R., & Weinberger, A. (2020, February 06). PIAF : développer la Pensée Informatique et Algorithmique dans l'enseignement Fondamental. Poster session presented at Didapro 8 – DidaSTIC: L’informatique, objets d’enseignements – enjeux épistémologiques, didactique et de formation, Lille, France.
Dording, C., Max, C. J., Kreis, Y., & Latour, T. (2020, November 12). GeoGebraTAO: Geometry Learning using a Dynamic Adaptive ICT-Enhanced Environment to Promote String Differentiation of Children's Individual Pathways. Paper presented at LuxERA (Semi-)Virtual Conference 2020, Online, Luxembourg.
Haas, B., & Kreis, Y. (2020, June 23). Innovative uses of technologies for STEAM education in elementary schools in Luxemburg. Paper presented at CADGME Online Gathering 2020, Online, Austria & Jerusalem.
Haas, B., & Kreis, Y. (2020, January 17). Fostering process related skills in mathematics though educational technology in elementary schools. Paper presented at Pedagogical Innovations in STEAM Education Conference, Linz, Austria.
Haas, B., Kreis, Y., & Lavicza, Z. (2020, December 15). Outdoor STEAM integrated framework in elementary schools in Luxembourg using MathCityMap and GeoGebra 3D Calculator. Paper presented at Asian Technology Conference in Mathematics (ACTM), Online, VA, USA and Thailand.
Haas, B., Kreis, Y., & Lavicza, Z. (2020). Fostering process skills with the educational technology software MathemaTIC in elementary schools. In A., Donevska-Todorova, E., Faggiano, J., Trgalova, Z., Lavicza, R., Weinhandl, A., Clark-Wilson, & H.-G., Weigand (Eds.), Proceedings of the 10th ERME TOPIC CONFERENCE (ETC10) on Mathematics Education in the Digital Age (MEDA) (pp. 199-206). Linz, Austria: Johannes Kepler University.
Haas, B., Kreis, Y., & Lavicza, Z. (2020). Connecting the real world to mathematical models in elementary schools in Luxemburg. Proceedings of the British Society for Research into Learning Mathematics, 40(2), 1-6.
Haas, B., Kreis, Y., & Zsolt, L. (2020, November 12). The use of augmented reality, digital and physical modelling in schooling at home in early childhood in Echternach. Paper presented at LuxERA (Semi-)Virtual Conference 2020, Online, Luxembourg.
Haas, B., Lavicza, Z., Dana-Picard, T. N., & Kreis, Y. (2020, December 10). Transition from in-class to outdoor learning with real-world mathematical modelling: PhD research project 2015-2021. Paper presented at PhD Proposal feedback, Online, Austria.
Haas, B., Lavicza, Z., & Kreis, Y. (2020, July 03). STEAM Education in elementary schools: A holistic investigation on technology enhanced teaching and learning. Paper presented at New Researcher's Day Conference, Online, United Kingdom.
Haas, B., Lavicza, Z., & Kreis, Y. (2020, June 25). STEAM in special needs education in an elementary school in Luxemburg. Paper presented at INSTEAD VI - Workshop on Innovative Teaching Methodologies for Math Courses on Engineering Degrees, Online, Portugal.
Kreis, Y. (2020). Dynamische Mathematik mit GeoGebra – 3D-Grafikfenster. Paper presented at Formation Continue Interne, Junglinster, Luxembourg.
Kreis, Y., Haas, B., Reuter, R., Meyers, C., & Busana, G. (2020). Reflections on our teaching activities in the initial teacher training during the COVID-19 crisis: From “onsite classes” to “schooling at home”. In G., Mein & J., Pause (Eds.), Self and Society in the Corona Crisis: Perspectives from the Humanities and Social Sciences. Esch-sur-Alzette, Luxembourg: Melusina Press.
Lavicza, Z., Haas, B., & Kreis, Y. (2020). Discovering Everyday Mathematical Situations Outside the Classroom with MathCityMap and GeoGebra 3D. In M., Ludwig, S., Jablonski, A., Caldeira, & A., Moura (Eds.), Research on Outdoor STEM Education in the digiTal Age: Proceedings of the ROSETA Online Conference in June 2020 (pp. 23-30). Münster, Germany: WTM.
Parmentier, Y., Reuter, R., Higuet, S., Kataja, L., Kreis, Y., Duflot-Kremer, M., Laduron, C., Meyers, C., Busana, G., Weinberger, A., & Denis, B. (2020). PIAF: Developing Computational and Algorithmic Thinking in Fundamental Education. Proceedings of EdMedia + Innovate Learning, 2020(1), 315-322.
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2019

Kreis, Y. (2019). Dynamische Mathematik mit GeoGebra – Evaluation. Paper presented at Formation Continue Interne, Junglinster, Luxembourg.
Kreis, Y. (2019, April 24). Flipped classroom and didactic approach in big classrooms. Paper presented at Teaching Showcase, Belval, Luxembourg.
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2018

Kreis, Y., Dording, C., Keller, U., Porro, V., & Jadoul, R. (2018). Dynamische Mathematik und computergestützte Tests: GeoGebra in TAO. In S., Ladel, J., Knopf, & A., Weinberger (Eds.), Digitalisierung und Bildung (pp. 59-80). Wiesbaden, Germany: Springer VS.
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2017

Haas, B., Kesting, F., Martin, R., Kreis, Y., & Koenig, V. (2017). Die Lernplattform MathemaTIC: Digitales Erlernen der kognitiven Prozesse im Sachrechnen im Alter von 8 bis 10 Jahren. In U., Kortenkamp & A., Kuzle (Eds.), Beiträge zum Mathematikunterricht 2017 (pp. 1333-1336). Münster, Deutschland: WTM-Verlag.
Kreis, Y. (2017). 7O = 3D. Paper presented at Journée expert externe, Dudelange, Luxembourg.
Kreis, Y. (2017). Dynamische Mathematik mit GeoGebra – 3D-Grafikfenster. Paper presented at Formation Continue Interne, Esch-sur-Alzette, Luxembourg.
Pelt, V., Ugen, S., Milmeister, M., Weis, C., & Kreis, Y. (2017). Évaluation du Projet pilote : Le Cours de Mathématiques en Allemand au Maacher Lycée. Rapport détaillé. Année 1. Luxembourg: MENJE/SCRIPT.
Pelt, V., Ugen, S., Milmeister, M., Weis, C., & Kreis, Y. (2017). Évaluation du projet d’innovation pédagogique : L’allemand comme langue véhiculaire dans le cours de mathématiques au cycle inférieur de l’EST à l’ALR. Rapport détaillé. Année 1. Luxembourg: MENJE/SCRIPT.
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2016

Dording, C., Martin, R., Kreis, Y., & Latour, T. (2016, July 26). GeoGebraTAO, validation of an adaptive learning environment of dynamic geometry. Source of a differentiation individual pathway of the student? Paper presented at 13th International Congress on Mathematical Education, Hamburg, Germany.
Dording, C., Martin, R., Kreis, Y., & Latour, T. (2016, March 08). GeoGebraTAO - eine dynamische Software für ein niveauangemessenes selbstständiges Arbeiten in Geometrie? Paper presented at 50. Jahrestagung der Gesellschaft für Didaktik der Mathematik (GDM), Heidelberg, Germany.
Haas, B., Kreis, Y., Koenig, V., & Martin, R. (2016, November 21). L’utilisation de l’environnement numérique MathemaTIC pour développer les compétences dans le domaine de la résolution de problèmes arithmétiques. Paper presented at Évaluation en mathématiques : dispositifs, validités & pratiques, Paris, France.
Haas, B., Martin, R., & Kreis, Y. (2016, July 29). Using interactive items in arithmetic problems to help Grade 3 students shift from intuitive to arithmetic-based strategies and create mental representation. Poster session presented at 13th International Congress on Mathematical Education, Hamburg, Germany.
Kreis, Y. (2016). Dynamische Mathematik mit GeoGebra – Grafikfenster und Tabellenkalkulation. Paper presented at Formation Continue Interne, Dudelange, Luxembourg.
Kreis, Y. (2016). Dynamische Mathematik mit GeoGebra – Algebra- und 3D-Grafikfenster. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
Kreis, Y. (2016, June 28). Dynamische Mathematik in der Grundschule. Paper presented at Ringvorlesung "Digitalisierung und Bildung", Saarbrücken, Germany.
Kreis, Y. (2016). Dynamische Mathematik mit GeoGebra – Algebra- und 3D-Grafikfenster. Paper presented at Formation Continue Interne, Diekirch, Luxembourg.
Kreis, Y. (2016). Dynamische Mathematik mit GeoGebra – Algebra- und 3D-Grafikfenster. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
Kreis, Y. (2016). Intégrer l´outil informatique dans le cours de mathématiques (Geogebra/Excel). Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
Kreis, Y., Bertemes, J., Kafai-Afif, A., & Haas, B. (2016, July 29). The personalized and multilingual mathematical learning environment MathemaTIC. Paper presented at 13th International Congress on Mathematical Education, Hamburg, Germany.
Kreis, Y., Kafai-Afif, A., Haas, B., & Reinert, A. (2016, March 08). Die personalisierte und mehrsprachige mathematische Lernumgebung MathemaTIC. Paper presented at 50. Jahrestagung der Gesellschaft für Didaktik der Mathematik (GDM), Heidelberg, Germany.
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2015

Dording, C., Martin, R., Kreis, Y., & Latour, T. (2015, November 24). GeoGebraTAO, validation of an Adaptive Learning Environment of dynamic geometry. Source of a differentiation individual pathway of the student? Poster session presented at European Association for Practitioner Research on Improving Learning (EAPRIL) 2015 Conference, Esch-sur-Alzette, Luxembourg.
Kreis, Y., Bertemes, J., Kafai-Afif, A., Haas, B., & Arzoumanian, P. (2015, November 25). MathemaTIC. Paper presented at European Association for Practitioner Research on Improving Learning (EAPRIL) 2015 Conference, Esch-sur-Alzette, Luxembourg.
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2014

Kreis, Y. (2014). Dynamische Mathematik mit GeoGebra – Algebrafenster. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
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2013

Kreis, Y. (2013). Dynamische Mathematik mit GeoGebra – Grafikfenster und Tabellenkalkulation. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
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2012

Kreis, Y. (2012). Dynamische Mathematik mit GeoGebra. Paper presented at Formation Continue Interne, Esch-sur-Alzette, Luxembourg.
Kreis, Y. (2012). Dynamische Mathematik mit GeoGebra. Paper presented at Formation Continue Interne, Esch-sur-Alzette, Luxembourg.
Kreis, Y. (2012). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Natürliche Zahlen (3. Aufl). Walferdange, Luxembourg: University of Luxembourg.
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2011

Hohenwarter, M., Borcherds, M., Ancsin, G., Blossier, M., Denizet, C., Fekete, A., Konecny, Z., Kovacs, Z., Kreis, Y., Sonner, F., Sturr, G., & Ulven, H.-P. (2011). GeoGebra. Saalfelden, Austria: International GeoGebra Institute.
Kreis, Y. (2011). Dynamische Mathematik mit GeoGebra. Paper presented at Formation Continue Interne, Redange, Luxembourg.
Kreis, Y. (2011). Dynamische Mathematik mit GeoGebra. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
Kreis, Y. (2011). Dynamische Mathematik mit GeoGebra. Paper presented at Formation Continue Interne, Esch-sur-Alzette, Luxembourg.
Kreis, Y. (2011). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Geometrie (2. Aufl). Walferdange, Luxembourg: University of Luxembourg.
Kreis, Y., & Jadoul, R. (2011, March 30). GeoGebra(Mobile) and TAO 2.0: Unleashing the power of assessment in geometry. Paper presented at TAO Days 2011, Luxembourg, Luxembourg.
Lavicza, Z., Hohenwarter, M., Jones, K., Dawes, M., & Kreis, Y. (2011, February 10). Establishing a Professional Development Network in England around Dynamic Mathematics Software. Poster session presented at CERME 7 - Seventh Conference of European Research in Mathematics Education, Rzeszów, Poland.
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2010

Chrysanthou, I., Hohenwarter, J., Hohenwarter, M., Hreinsdóttir, F., Kreis, Y., Lavicza, Z., Lindner, A., Papp-Varga, S., Parish, A., Recio, T., Sanne, A., Stepancik, E., & Winkowska‐Nowak, K. (2010). First International GeoGebra Conference 2009. Hagenberg, Austria.
Egido, S., Hendriks, M., Kreis, Y., Kortenkamp, U., Marquès, D., Hohenwarter, M. (Other coll.), Laborde, J.-M. (Other coll.), & Libbrecht, P. (Other coll.). (2010). i2g Common File Format Final Version (3.10).
Kortenkamp, U., Blessing, A. M., Dohrmann, C., Kreis, Y., Libbrecht, P., & Mercat, C. (2010). Interoperable Interactive Geometry for Europe - First Technological and Educational results and future challenges of the Intergeo project. In V., Durand-Guerrier, S., Soury-Lavergne, & F., Arzarello (Eds.), Proceedings of the Sixth Congress of the European Society for Research in Mathematics Education (pp. 1150-1160). Lyon, France: Institut National de Recherche Pédagogique (INRP).
Kortenkamp, U., & Kreis, Y. (2010). Konstruktionsbeschreibungen und DGS. In A. M., Lindmeier & S., Ufer (Eds.), Beiträge zum Mathematikunterricht 2010 (pp. 501-504). Münster, Germany: WTM-Verlag.
Kreis, Y. (2010, July 27). GeoGebra - Dynamic Mathematics for Everyone. Paper presented at The First North American GeoGebra Conference, Ithaca, NY, USA.
Kreis, Y., Dording, C., & Keller, U. (2010, June 30). GeoGebraPrim - GeoGebra for Primary School. Paper presented at Computer Algebra and Dynamic Geometry Systems in Mathematics Education (CADGME) 2010, Hluboká nad Vltavou, Czech Republic.
Kreis, Y., Dording, C., & Keller, U. (2010). GeoGebraPrim - GeoGebra in der Grundschule. In A. M., Lindmeier & S., Ufer (Eds.), Beiträge zum Mathematikunterricht 2010 (pp. 513-516). Münster, Germany: WTM-Verlag.
Kreis, Y., Dording, C., Porro, V., & Jadoul, R. (2010). Dynamic mathematics and computer-assisted testing: GeoGebra inside TAO. In U., Kortenkamp, P., Pech, C., Dohrmann, & R., Hašek (Eds.), Proceedings of the Interoperable Interactive Geometry Conference 2010.
Kreis, Y., & Hohenwarter, M. (2010, June 29). The Future of GeoGebra. Paper presented at Computer Algebra and Dynamic Geometry Systems in Mathematics Education (CADGME) 2010, Hluboká nad Vltavou, Czech Republic.
Kreis, Y., & Kortenkamp, U. (2010, July 02). Technical Aspects of Intergeo. Paper presented at Interoperable Interactive Geometry (I2GEO) Conference 2010, Hluboká nad Vltavou, Czech Republic.
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2009

Abánades, M., Botana, F., Escribano, J., Hendriks, M., Kortenkamp, U., Kreis, Y., Libbrecht, P., Marques, D., & Mercat, C. (2009). The Intergeo File Format in Progress. In J. H., Davenport (Ed.), Proceedings of the 22nd OpenMath Workshop (pp. 17-30). Bath, United Kingdom: University of Bath Press & OpenMath Society.
Hendriks, M., Kortenkamp, U., Kreis, Y., Marquès, D., Badia, E. (Other coll.), Egido, S. (Other coll.), & Wassermann, A. (Other coll.). (2009). Report on Implementations of the Common File Format (3.8).
Hendriks, M., Kortenkamp, U., Kreis, Y., Marquès, D., Grothmann, R. (Other coll.), Hohenwarter, M. (Other coll.), Laborde, J.-M. (Other coll.), & Schandeler, I. (Other coll.). (2009). i2g Common File Format Draft v2 (3.6).
Hohenwarter, M., Borcherds, M., & Kreis, Y. (2009). GeoGebra. Saalfelden, Austria: GeoGebra Inc.
Hohenwarter, M., & Kreis, Y. (2009, July 15). Software Development & Online Systems: Extensions. Paper presented at First International GeoGebra Conference, Hagenberg, Austria.
Hohenwarter, M., & Kreis, Y. (2009, July 14). Software Development & Online Systems: CAS. Paper presented at First International GeoGebra Conference, Hagenberg, Austria.
Kortenkamp, U., Abánades, M., Botana, F., Dohrmann, C., Escribano, J., Kreis, Y., Recio, T., & Wassermann, A. (2009, July 13). Intergeo: fostering the use of Dynamic Geometry Software in Europe. Paper presented at Computer Algebra and Dynamic Geometry Systems in Mathematics Education (CADGME) 2009, Hagenberg, Austria.
Kortenkamp, U., Dohrmann, C., Kreis, Y., Dording, C., Libbrecht, P., & Mercat, C. (2009). Using the Intergeo Platform for Teaching and Research. In C., Bardini, P., Fortin, A., Oldknow, & D., Vagost (Eds.), Proceedings of the 9th International Conference on Technology in Mathematics Teaching (pp. 1-5). Metz, France: ICTMT 9.
Kortenkamp, U., Kreis, Y. (Other coll.), Libbrecht, P. (Other coll.), & Marquès, D. (Other coll.). (2009). I2G API Specification (3.5).
Kreis, Y. (2009, November 14). The project GeoGebraPrim - GeoGebra for Primary School. Paper presented at GeoGebra, un instrument per al desenvolupament de les competències matemàtiques de l'alumnat de Primària, de l'ESO i del Batxillerat, Barcelona, Spain.
Kreis, Y. (2009). Dynamische Mathematik mit GeoGebra - Planung, Organisation und Realisierung von Unterrichtseinheiten. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
Kreis, Y. (2009). Dynamische Mathematik mit GeoGebra - Planung, Organisation und Realisierung von Unterrichtseinheiten. Paper presented at Formation Continue Interne, Luxembourg, Luxembourg.
Kreis, Y. (2009). Dynamische Mathematik mit GeoGebra - Planung, Organisation und Realisierung von Unterrichtseinheiten. Paper presented at Formation Continue Interne, Grevenmacher, Luxembourg.
Kreis, Y., & Dording, C. (2009, July 11). GeoGebraPrim - GeoGebra for Primary School. Paper presented at Computer Algebra and Dynamic Geometry Systems in Mathematics Education (CADGME) 2009, Hagenberg, Austria.
Kreis, Y., & Dording, C. (2009). GeoGebraPrim - GeoGebra for Primary School. In C., Bardini, P., Fortin, A., Oldknow, & D., Vagost (Eds.), Proceedings of the 9th International Conference on Technology in Mathematics Teaching (pp. 1-5). Metz, France: ICTMT 9.
Kreis, Y., Hohenwarter, M., & Hohenwarter, J. (2009, July 12). GeoGebra 3.2 – The new Spreadsheet View. Paper presented at Computer Algebra and Dynamic Geometry Systems in Mathematics Education (CADGME) 2009, Hagenberg, Austria.
Kreis, Y., Hohenwarter, M., & Hohenwarter, J. (2009). GeoGebra 3.2 - The new Spreadsheet View. In C., Bardini, P., Fortin, A., Oldknow, & D., Vagost (Eds.), Proceedings of the 9th International Conference on Technology in Mathematics Teaching. Metz, France: ICTMT 9.
Kreis, Y., & Lavicza, Z. (2009, July 06). International GeoGebra Institute: nurturing a community to assist the integration of the open-source mathematics software GeoGebra into mathematics teaching. Paper presented at The Ninth International Conference on Technology in Mathematics Teaching (ICTMT 9), Metz, France.
Linckels, S., Kreis, Y., Reuter, R., Dording, C., Weber, C., & Meinel, C. (2009). Teaching with Information and Communication Technologies: Results of a Large Scale Survey. In G., Farally-Semerad, K., McRitchie, & B., Rugg (Eds.), SIGUCCS '09: Proceedings of the 37th annual ACM SIGUCCS fall conference: communication and collaboration (pp. 157-162). New York, USA: ACM.
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2008

Hendriks, M., Ippersiel, M., Kortenkamp, U., Kreis, Y., Laborde, C., Pech, P., Recio, T., & Wassermann, A. (2008). Status quo report on DGS usage (5.1).
Hendriks, M., Kortenkamp, U., Kreis, Y., Marquès, D., Grothmann, R. (Other coll.), Hohenwarter, M. (Other coll.), Laborde, J.-M. (Other coll.), Libbrecht, P. (Other coll.), & Schandeler, I. (Other coll.). (2008). Common File Format v1 (3.3).
Hohenwarter, M., Borcherds, M., & Kreis, Y. (2008). GeoGebra.
Hohenwarter, M., Hohenwarter, J., Kreis, Y., & Lavicza, Z. (2008, July 09). GeoGebra – free dynamic mathematics software. Paper presented at 11th International Congress on Mathematical Education (ICME 11), Monterrey, Mexico.
Hohenwarter, M., Hohenwarter, J., Kreis, Y., & Lavicza, Z. (2008, July 09). Mathematics teacher development and technology: towards an International GeoGebra Institute. Poster session presented at 11th International Congress on Mathematical Education (ICME 11), Monterrey, Mexico.
Hohenwarter, M., Hohenwarter, J., Kreis, Y., & Lavicza, Z. (2008, July 09). GeoGebra – free software for dynamic geometry, algebra and calculus. Poster session presented at 11th International Congress on Mathematical Education (ICME 11), Monterrey, Mexico.
Hohenwarter, M., Hohenwarter, J., Kreis, Y., & Lavicza, Z. (2008, July 08). Teaching and Learning Calculus with Free Dynamic Mathematics Software GeoGebra. Paper presented at 11th International Congress on Mathematical Education (ICME 11), Monterrey, Mexico.
Hohenwarter, M., Kreis, Y., & Lavisca, Z. (2008). Technology professional development and research collaboration: Towards an International GeoGebra Institute. In É., Vásárhelyi (Ed.), Beiträge zum Mathematikunterricht 2008 (pp. 307-310). Münster, Deutschland: WTM-Verlag.
Kortenkamp, U., & Kreis, Y. (2008). Intergeo - Interoperable Interactive Geometry for Europe. In É., Vásárhelyi (Ed.), Beiträge zum Mathematikunterricht 2008 (pp. 396-399). Münster, Deutschland: WTM-Verlag.
Kortenkamp, U., Kreis, Y., & Laborde, J.-M. (2008, July 09). Intergeo - Interoperable Interactive Geometry for Europe. Poster session presented at 11th International Congress on Mathematical Education (ICME 11), Monterrey, Mexico.
Kreis, Y. (2008, October 29). New perspectives on the use of GeoGebra for improving teaching quality. Paper presented at I Jornada de l'Associació Catalana de GeoGebra (ACG), Barcelona, Spain.
Kreis, Y. (2008, May 07). GeoGebra-related activities at the University of Luxembourg. Paper presented at First Meeting of the International GeoGebra Institute (IGI), Cambridge, United Kingdom.
Kreis, Y. (2008, March 13). Kann ein DGS den Geometrieunterricht für alle Kinder verändern? Paper presented at 5e Rencontre Internationale Pédagogie & Psychologie: Rechenschwierigkeiten (Beschreibung - Diagnostik - Förderung), Luxembourg, Luxembourg.
Kreis, Y., Busana, G., & Meyers, C. (2008). Negative Zahlen in der Grundschule. In É., Vásárhelyi (Ed.), Beiträge zum Mathematikunterricht 2008 (pp. 537-540). Münster, Deutschland: WTM-Verlag.
Kreis, Y., Schandeler, I., & Libbrecht, P. (2008, February 01). Intergeo - Interoperable Interactive Geometry for Europe. Paper presented at 3rd JEM Workshop, Barcelona, Spain.
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2007

Kreis, Y. (2007). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Brüche und Dezimalzahlen (2. Aufl). Walferdange, Luxembourg: University of Luxembourg.
Kreis, Y. (2007). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Geometrie. Walferdange, Luxembourg: University of Luxembourg.
Kreis, Y. (2007). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Natürliche Zahlen (2. Aufl). Walferdange, Luxembourg: University of Luxembourg.
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2006

Hohenwarter, M., & Kreis, Y. (2006). GeoGebra.
Kreis, Y. (2006). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Brüche und Dezimalzahlen. Walferdange, Luxembourg: University of Luxembourg.
Kreis, Y. (2006). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Projekte (2. Aufl). Walferdange, Luxembourg: University of Luxembourg.
Kreis, Y. (2006). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Natürliche Zahlen. Walferdange, Luxembourg: University of Luxembourg.
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2005

Kreis, Y. (2005). Eignet sich die semi-konkrete Darstellungsform Pfeilsprache als nonverbale Kommunikationsmöglichkeit im aktiv-entdeckenden Mathematikunterricht? Unpublished doctoral thesis, University of Education Ludwigsburg, ​Ludwigsburg, ​​Germany.
Kreis, Y. (2005). Entdeckendes Lernen im Mathematikunterricht der Grundschule: Projekte. Walferdange, Luxembourg: University of Luxembourg.
Kreis, Y. (2005). Eignet sich die semi-konkrete Darstellungsform Pfeilsprache als nonverbale Kommunikationsmöglichkeit im aktiv-entdeckenden Mathematikunterricht? Luxembourg, Luxembourg: Ministère de l’Éducation nationale et de la Formation professionnelle.
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2004

Kreis, Y. (2004). Mathé mat TIC Intégration de l'outil informatique dans le cours de mathématiques de la classe de 4e. Unpublished master thesis, Ministère de l’Éducation nationale et de la Formation professionnelle (MENFP), ​Luxembourg, ​​Luxembourg.
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2002

Kreis, Y. (2002). MATHE MAT TIC. Unpublished master thesis, Centre Universitaire de Luxembourg, ​Luxembourg, ​​Luxembourg.
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1998

Kreis, Y. (1998). Iterative Methoden für Pseudospektralverfahren zur Lösung von Randwertproblemen. Unpublished master thesis, Universität Freiburg, ​Freiburg, ​​Schweiz.
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