LTReikšminiai žodžiai: Bilingvizmas; Dvikalbiai vaikai; Dvikalbio ugdymo modeliai; Multilingvizmas; Priešmokyklinis amžius; Bilingual children; Bilingualism; Bilingualism, multilingualism, models of bilingual education; Models of bilingual children; Models of bilingual education; Multi lingualism; Multilingualism; Prc-school age; Pre - school age; Pre-school age.