DASKALOS_EPIKOINONIA|DASKALOS_SYNERGASIA|DASKALOS_PARAKOLOUTHISI|DASKALOS_DISTANCE|DASKALOS_LOCAL|STUDENTS_EPIKOINONIA|STUDENTS_SYNERGASIA|APOPSEIS_DISTANCE|APOPSEIS_LOCAL|LESSON_NEW|LESSON_OLD|LESSON_CHANGE|SOC_SXESEIS_LOCAL|SOC_SXESEIS_DISTANCE|SOC_MEETINGS|SOC_FRIENDS|TECH_USE_PC|TECH_USE_CAM|TECH_USE_SOUND|KNOW_EDU_SUB|KNOW_EFFECT|KNOW_ICT|KNOW_CREATE|MOTIVATION|OTHERS