‘What Conceptions do Greek School Students Form about Biological Evolution?’, Evolution: Education and Outreach, τ. 1, σσ 312-317, 2008.

‘Biology remains platonic in many ways. What about Biology Instruction? Effects on Teaching Variational Evolution’, ESERA 2007 Conference. Malmö, Sweden, 2007.

‘The depletion of the ozone layer in Greek school science textbooks’, in International Meeting on Critical Analysis of School Science Textbook, IOSTE (International Organisation for Science and Technology Education), Hammamet, Tunisia, 2007.

‘Environmental issues/problems in science fiction texts translated and published in Greece’, in International Conference of ESERA (European Science Education Research Association), Malmo, Sweden, 2007, Web Proceedings of International Conference of ESERA.

‘Historical analysis of illustrations of scientific instruments in Greek primary school textbooks (1878 -1950)’, in International Meeting on Critical Analysis of School Science Textbook, IOSTE (International Organisation for Science and Technology Education), Hammamet, Tunisia, 2007.

‘Thought Experiments in the Theory of Relativity and in Quantum Mechanics: Their Presence in Textbooks and in Popular Science Books’, Science & Education, τ. 16, τχ. 3-5, σσ 353 - 370, 2007.

‘The use of thought experiments in Greek physics textbooks in the field of Newtonian mechanics’, in International meeting IOSTE on critical analysis of school science textbooks, Hammamet, Tunisia, 2007.

‘How Primary School Teachers Understand Adaptations and Relevant Biological Concepts’, in VIth Conference of European Researchers in Didactics of Biology 2006 (ERIDOB), Institude of Education, London, 2006.

‘Basic concepts of special theory of relativity in secondary education: do students understand them?’, in European Science Education Research Association Conference (ESERA) “Contributions of Research to Enhancing Students’ Interest in Learning Science”, Barcelona, Spain, 2005.

‘History of Science in 20th century Greek Science Textbooks of Primary Education’, in 8th International History, Philosophy, Sociology & Science Teaching Conference “Teaching and Communicating Science”, Leeds, England, 2005.

‘Prerequisites for the Conceptual Change of Key Concepts Essential for the Teaching of the Theory of Special Relativity’, in EARLI 4th European Symposium “Conceptual Change: Philosophical, Historical, Psychological and Educational Approaches”, Delphi, Greece, 2005.

‘Printed and digital press science: ways of transforming press science into school science’, in European Science Education Research Association Conference (ESERA) “Contributions of Research to Enhancing Students’ Interest in Learning Science”, Barcelona, Spain, 2005.

‘Teachers’ attitudes, views and difficulties regarding the teaching of evolution’, in European Science Education Research Association Conference (ESERA) “Contributions of Research to Enhancing Students’ Interest in Learning Science”, Barcelona, Spain, 2005.

‘Teaching the Theory of Evolution: Teacher’s Attitudes, Views and Difficulties’, in 8th International History, Philosophy, Sociology & Science Teaching Conference “Teaching and Communicating Science”, Leeds, England, 2005.

‘Thought experiments in physics theories of the 20th century: a tool for popularization and teaching in secondary education’, in European Science Education Research Association Conference (ESERA) “Contributions of Research to Enhancing Students’ Interest in Learning Science”, Barcelona, Spain, 2005.

‘Thought Experiments in the Theory of Relativity and in Quantum Mechanics: Their Presence in Textbooks and in Popular Science Book’, in 8th International History, Philosophy and Science Teaching Conference “Teaching and Communicating Science”, Leeds, UK, 2005.

‘Conceptual Change: From Research to Instructive Practice. For a Timely dealing with Students Lamarckian Views’, in EARLI 4th European Symposium “Conceptual Change: Philosophical, Historical, Psychological and Educational Approaches”, Delphi, Greece, 2004.

‘History of Science (HOS) integration in 20th century Greek primary school science textbooks’, European Conference on Educational Research (ECER). European Education Research Association (EERA), Rethymnon, Crete, Greece, 2004.

‘History of Science (HOS) integration in 20thcentury Greek Primary School Science Textbooks’, in European Education Research Association (EERA), European Conference on Educational Research (ECER), Rethymnon, Greece, 2004.

‘Who is Afraid of Teaching Evolution in Greek Education? Evolution in Biology Curricula and Textbooks, from the Establishment of the Subject of Biology to date’, in Fifth Conference of European Researchers in Didactics of Biology, Patras, Greece, 2004.

Μαρία Δρακοπούλου, Σκορδούλης, Κ., και Χαλκιά, Κρυσταλλία, Συγγρ., ‘Ανάλυση Στοιχείων Ιστορίας της Επιστήμης στα Σχολικά Εγχειρίδια Φυσικής της Πρωτοβάθμιας Εκπαίδευσης κατά τον 20ό αιώνα’, in 3ο Επιστημονικό Συνέδριο Ιστορίας της Εκπαίδευσης, Πάτρα, 2004.

Δημήτριος Μαντζουρίδης, Χαλκιά, Κρυσταλλία, και Σκορδούλης, Κ., Συγγρ., ‘Η Εκλαΐκευση των Φυσικών Επιστημών στα Μέσα Μαζικής Ενημέρωσης’, Θέματα στην Εκπαίδευση, τ. 4 , σσ 311-338, 2004.

Λουκία Πρίνου, Χαλκιά, Κρυσταλλία, και Σκορδούλης, Κ., Συγγρ., ‘Οι λαμαρκιανές ερμηνείες μαθητών της Γ’ Γυμνασίου εμπόδιο στην κατανόηση της φυσικής επιλογής. Σκέψεις και επισημάνσεις’, Θέματα στην Εκπαίδευση, τ. 4. , σσ 299-309, 2003.