Language teaching ; Focus group (method.) ; Gruppenspezifische Kommunikation; Group communication ; Kode (Kommunikationsforschung) ; Speech codes theory; Accommodation theory (communication research) ; Code (communication research) ; Classroom communication; Instructional communication ; Metalinguistic awareness; Phonologische Bewusstheit; Phonological awareness; Focus on form (language teaching) ; Sprachbewusstsein; Linguistic awareness ; Zweisprachigkeit; Bilingualism ; French ; Catalan