1. FP7 Project Mathematics and Science for Life ( 1/01/ 2103 – 31/12/2016) (project coordinator Katja Maass, University of Freiburg)
2. Erasmus + Project Intercultural learning in mathematics and science education – IncluSMe (1/9/2016 – 31/08/2019) (project coordinator Katja Maass, University of Freiburg)
3. Erasmus + Project Enhancing Differentiated Instruction and Cognitive Activation in Mathematics Lessons by Supporting Teacher Learning - EDUCATE (1/10/2017 – 31/3/2020) - project coordinator Charalambos Charalambous, University of Cyprus)

OTHER SCIENTIFIC ACTIVITIES

• Member of the editorial boards and teams:

(1) Journal of Mathematics Teacher Education (Springer) (associate editor from July 2011 until June 2017, chief editor since then until December 2023),
(2) Research in Mathematics Education (Taylor and Francis),
(3) Mediterranean Journal for research in mathematics education (Cyprus Mathematical Society).

• Reviewer of a number of research papers submitted in International Journals and Conferences

(1) Journal for Research in Mathematics Education (NCTM),
(2) Educational Studies in Mathematics (Springer),
(3) ZDM – the International Journal on Mathematics Education (Springer); International Journal of Mathematics and Science Education (Springer),
(4) Mathematical Thinking and Learning (Taylor and Francis),
(5) The Journal of Mathematical Behavior (Elsevier).
• Vice - Chair of the Educational Committee of the European Mathematical Society (2012-2016).


• Member of the scientific and organizing committees of International Conferences

(1) Member of the Organising Committee of CERME 5, Cyprus 2006,
(2) Member of the Organising Committee of the Topic Study Group TSG 26 at ICME 11, Mexico 2008
(3) Member of the International Programme Committee of PME33, Greece, 2009
(4) Co-leader of the working group WG17 at CERME 7, Rzeszow, Poland, 2011,
(5) Leader of the working Group WG17 at CERME 8, Antalya, Turkey, 2013,
(6) Member of the Program Committee of the organizing committee of CERME 9, Czech Republic, 2015
(7) Member of the Program Committee of the organizing committee of CERME 10, Ireland, 2017.

• Invited speaker in the Plenary Panel of PME34 conference, Brazil, 2010.
• Invited speaker in the Plenary Panel of ICME-14, Sanghai, 2021.
• Invited speaker in the Plenary Panel of PME46, Haifa, 2023.
• Invited speaker in the Plenary Panel of ICME-15, Sydney, 2024.
• Invited seminars in different universities (University of Haifa, Israel; Linnaeus University, Sweden; Adger University, Norway; Cambridge University, UK; Loughborough University, UK).
• Scientific co-ordinator of the team for developing the Greek mathematics curriculum of compulsory education (2010-2011) and evaluator of Greek mathematics textbooks for grade 5 and grade 6.
• External examiner of PhD theses abroad (University of Cambridge, University of Cyprus). Opponent of PhD theses in the university of Linnaeus and in Malmo (Sweden).
• Member of scientific committees (PME, CERME).
• Co-editor of books, handbooks and special issues:
• T. Dreyfus, M. Artigue, D. Potari, S. Prediger, & K. Ruthven (Eds.) (2018), Developing research in mathematics education - twenty years of communication, cooperation and collaboration in Europe. Oxon, UK: Routledge
• D. Potari & O. Chapman ( 2019) Teacher knowledge, beliefs and identity in mathematics teaching and its development. 2nd International Handbook in Mathematics Teacher Education, volume 1, Sense Publishers
• K. Maass, P. Cobb, K. Krainer & D. Potari. (2019). Special issue in Educational Studies in Mathematics) in Large- scale implementation in mathematics education.