Editorial

Playful Interactions between Twins with Autism and Teachers and Peers: a Case Study

Μaria Antonios Kypriotaki, Maria Eleftherios Markodimitraki

1-22

Primary students’ conceptions of the Earth: Re-examining a fundamental research hypothesis on mental models

Julie Vaiopoulou, George Papageorgiou

23-34

Relationships between sixth grade students’ cognitive development and their collaborative processes during solving numerical puzzle Sudoku

Maria Eleftheriou, Nikoletta Christodoulou

35-72

Generalizations, overgeneralizations and intercultural communication: The stereotype of the Greek nation at commemorative ceremonies in schools.

Luciana Benincasa

73-94