Description: The number of overseas Koreans worldwide has steadily increased and now exceeds 7.4 million. In order for overseas Koreans around the world to live with a healthy identity and pride, Korean language education tailored to their unique circumstances is needed. In particular, since language development varies by age, it is necessary to provide Korean language education appropriate to each age group. Building on its accumulated experience developing customized textbooks, the National Institute of Korean Language has been working to develop Korean language educational materials for preschool-aged overseas Korean children (ages 3-6). Foundational research and needs assessments were conducted in 2017, followed by field application and feedback collection in 2018. The development team included experts in Korean language education, early childhood education, and overseas Korean education. As a result, a set of materials titled 'Fun Korean for Young Children Around the World' was published, consisting of 6 activity books for children, 2 teacher's guides, 1 Hangeul activity book, and 1 large picture book. These educational materials are designed to be easy and convenient for overseas Korean children, teachers, and parents to use. Children can joyfully learn Korean through a wide range of learning content; teachers can flexibly use the various activity sheets according to their educational goals; and parents can naturally continue at home the Korean language learned at school through home-linked activities. In particular, these materials were developed to enhance children's bilingual abilities and to cultivate a healthy sense of linguistic and cultural identity. To that end, they are rich in content about the Korean language and culture, and great effort was made to showcase diverse aspects of language and culture. We hope that with 'Fun Korean for Young Children Around the World,' many overseas Korean children will enjoy learning Korean with excitement. We extend our heartfelt thanks to the development team and publishing staff whose dedicated efforts made these educational materials possible.