Fast Mapping, an Indicator of the Acquisition of German as a Foreign Language in Bilingual Families: A Case Study

The term mapping is used in various research fields with a variety of meanings. In linguistics, it is understood as an umbrella term for a learning process in which the assignment of a word and meaning is acquired. From the linguistic-pedagogical-methodological side, fast mapping can be understood as a phenomenon of linguistic processing that leads to the inclusion of a new word in the lexicon. A possible explanation for the quick acquisition of new words could be an efficient learning process that enables learning of a word after little contact, especially in bilingual families. The research shows us the case study of bilingual families in Germany in the state of Rhineland-Pfalz and their acquisition of the German languages. The research was from May 1st to May 30th, 2021. Those questioned were the parents $(\mathbf{N} =48)$ of the children. Research showed us which of the eight different aspects and methods of fast mapping were found to be the most successful in language learning. That was the "Power-Learning" (36 ^% ), than "Keeping a vocabulary book for technical terms" (28%), and "Repeating the technical terms from the previous lesson with the help of placemates" (21,4%)