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|30-Jun-2019||Mental representations of 14-15 years old students about the light||Ravanis, Konstantinos; Kaliampos, George||-|
|30-Jun-2019||Familiarizing pupils 4-6 years old with forms of spatial representation. The use of photography as an auxiliary tool||Zacharos, Konstantinos; Kilia, Maria; Ravanis, Konstantinos||-|
|13-Oct-2019||Mental representations of light propagation time for 10- and 14-year-old students : didactical perspectives||Ravanis, Konstantinos||-|