1. Introduction
The number of bilingual children is increasing dramatically all over the world. In 2015, the International Organization of Migration documented 244 million migrants worldwide. Furthermore, most international migrants (72%) are of working age (20–64) years, and starting a family and having children in the foreign country (International organization of Migration Report, 2018). Furthermore, in most countries, it is mandatory for children to study more than one language at school, even if the country has only one dominant language. For these reasons, more than half of the population of the world today is bilingual.
One of the challenges that arise from the rapid increase of bilingual children is a scientific assessment of linguistic proficiency in both of the languages used by the child, in various language domains. One of those language domains is narrative abilities. Narration, or storytelling, is an important aspect of language. Narrative abilities form a bridge between oral language and literacy. They provide exposure to and experience in using extended, contextualized vocabulary, language structure and abstract ideas that make the written text come to life. Narrative skills and abilities are important both academically and socially. They are useful in many life situations, in class and even in understanding the mathematical language.