Description: The number of overseas Koreans worldwide has been steadily increasing and has now surpassed 7.4 million. In order for overseas Koreans around the world to live with a healthy sense of identity and pride, Korean language education tailored to their unique circumstances is essential. In particular, since language development varies by age, it is necessary to provide Korean language education suited to each age group. Building on its prior achievements in developing customized teaching materials, the National Institute of Korean Language has been working to develop Korean language educational materials for preschool-age overseas Korean children (ages 3-6). In 2017, foundational research and needs assessments were conducted, 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, the 'Fun Korean for Children Around the World' series was published, consisting of 6 activity books for children, 2 teacher's guides, 1 Hangeul activity book, and 1 big picture book. These educational materials are designed to be easy and convenient for overseas Korean children, teachers, and parents alike to use. Children can enjoy learning Korean through a wide range of content, teachers can flexibly use the various activity sheets according to their educational goals, and parents can naturally continue the Korean language learning at home through activities connected to the classroom curriculum. In particular, these materials were developed to enhance children's bilingual abilities and to cultivate a healthy sense of linguistic and cultural identity. To this end, they are rich in content about the Korean language and culture, and great care was taken to showcase the diverse aspects of language and culture. We hope that with 'Fun Korean for Children Around the World,' many overseas Korean children will enjoy learning Korean with excitement. We would like to extend our heartfelt thanks to the development team and everyone at the publishing house whose dedicated efforts made these educational materials possible.