Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; English as a second language; ESL; TESOL ; Metalinguistic awareness; Phonologische Bewusstheit; Phonological awareness; Focus on form (language teaching) ; Sprachbewusstsein; Linguistic awareness ; Visuelle Wahrnehmung (von geschriebener Sprache) ; Visual perception (of written language) ; Reading (psycholing.) ; English ; French