Θεοφανίδου Ι., Βάσιου Α., and Λεμονίδης Χ. “Students’ Motivation and Perceptions of the Content about the 3rd Grade Elementary School Mathematics Textbook”. Panhellenic Conference of Educational Sciences, vol. 9, July 2020, pp. 187-96, doi:10.12681/edusc.3117.