DaF; Deutsch als Zweitsprache; German as a second language; DaZ; German as a foreign language ; Fremdsprachenunterricht (Grundschule) ; Foreign language teaching (elementary school) ; Modern Languages at Primary School; Kindergarten (Fremdsprachenunterricht) ; Kindergarten (foreign language teaching) ; Vorschule (Fremdsprachenunterricht) ; Nursery school (foreign language teaching) ; Preschool (foreign language teaching) ; Elementary school (foreign language teaching) ; Lehrplan; Instructional advice ; Wortschatz (Sprachunterricht) ; Lernwortschatz; Vocabulary teaching ; Bildende Kunst (semiot.) ; Fine arts (semiot.) ; Semiotics of art ; German