Bundesrepublik Deutschland; Federal Republic of Germany; BRD; Germany ; Poland ; Tschechien; Czech Republic ; Lehrplan; Syllabus; Curriculum research ; Sprachandragogik; Volkshochschule; Adult language teaching ; Second language acquisition (language teaching) ; Zweitspracherwerb (Unterricht) ; Foreign language teaching ; Study abroad program (language teaching) ; DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Cultural studies (language teaching) ; Kulturelle Information (Sprachunterricht) ; Sprache und Kultur (Sprachunterricht) ; Language and culture (language teaching) ; Area studies ; Glottodidaktik; Lehrforschung; Pädagogische Linguistik; Pedagogical linguistics; Language teaching research ; Cross-cultural pragmatics; Pragmatics, cross-cultural; Pragmatik, interkulturelle; Intercultural communication ; Stereotype ; Zweisprachigkeit; Bilingualism ; German ; Polish