Vamvakoussi, X., Bempeni, M., Poulopoulou, S., & Tsiplaki, I. (2019, Αύγουστος). Issues in studying conceptual and procedural fraction knowledge: Reflecting on a series of studies. Εργασία που παρουσιάστηκε στο Earli 2019, Άαχεν, Γερμανία.
Vamvakoussi, X., Vrakas, L., Kaldrimidou, M. (2019, Αύγουστος). Quantification in the Greek kindergarten curriculum: Additive Field vs. Multiplicative Field. Εργασία που παρουσιάστηκε στο Earli 2019, Άαχεν, Γερμανία.
Bempeni, M., Poulopoulou, S., & Vamvakoussi, X. (2017, Αύγουστος). Individual differences in fraction conceptual and procedural knowledge at the secondary level. Εργασία που παρουσιάστηκε στο 17th Biennial Conference for Research on Learning and Instruction, Τάμπερε, Φινλανδία.
Vamvakoussi, X., Vrakas, L., Lioliousi, A., & McMullen, J. (2016, Ιούλιος). Young children’s spontaneous focusing on simple multiplicative relations. Εργασία που παρουσιάστηκε στο 13th International Congress on Mathematical Education (ICME-13), Αμβούργο, Γερμανία.
Bempeni, M., Kaldrimidou, M., & Vamvakoussi, X. (2016, Iούνιος). Features of the deep approach to mathematics learning: a case study of two exceptionally competent students. Στο K.P. Christou & H. Eshach (Eds.), Book of Abstracts of the 10th International Conference on Conceptual Change (p. 61). Φλώρινα: Πανεπιστήμιο Δυτικής Μακεδονίας
Bempeni, M., & Vamvakoussi, X. (2014, August). Seventh and ninth graders’ conceptual and procedural knowledge of fractions: What changes with school experience? Εργασία που παρουσιάστηκε στο 9th International Conference on Conceptual Change, Μπολόνια, Ιταλία.
Bempeni, M., & Vamvakoussi, X. (2013, Αύγουστος). On individual differences in conceptual and procedural knowledge of fractions. Εργασία που παρουσιάστηκε στο 15th Biennial Conference for Research on Learning and Instruction, Μόναχο, Γερμανία.
Bempeni, M., & Vamvakoussi X. (2013, Ιούλιος). Individual differences in the knowledge of fractions and their relation to the individual’s learning approach to mathematics. Στο Α.Μ. Lindmeier & Α. Ηeinze, A. (Eds.), Proceedings of the 37th Conference of the International Group for the Psychology of Mathematics Education (Vol. 5, p. 19). Kiel, Germany: PME.
Βempeni, M., & Vamvakoussi, X. (2013, Ιούνιος). Individual differences in fraction knowledge and their relation to the individual’ s learning approach to mathematics. Εργασία που παρουσιάστηκε στο 4ο Πανελλήνιο Συνέδριο Γνωσιακής Επιστήμης, Αθήνα.
Βempeni, M. & Vamvakoussi, X. (2012, Σεπτέμβριος). Individual differences in conceptual and procedural knowledge of fractions and their relation to students’ studying approaches. Στο P. Michael & A. Gagatsis (Eds.), Abstracts Booklet of the 7th Mediterranean Conference on Mathematics Education (σελ. 33). Nicosia: Cyprus Mathematical Society, University of Cyprus.