Description: The number of overseas Koreans worldwide has steadily increased, now surpassing 7.4 million. For overseas Koreans everywhere 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 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 children (ages 3-6) of overseas Koreans. In 2017, foundational research and needs assessments were conducted, and in 2018, field testing and feedback collection took place. The development team included experts in Korean language education, early childhood education, and education for overseas Koreans. As a result, the series 'Fun Korean for Young Children Around the World' was published, consisting of 6 activity books for children, 2 teacher's guides, 1 Hangeul play book, and 1 large 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 various activity sheets according to their educational goals, and parents can help their children naturally use at home the Korean they've learned at school through home-connected activities. In particular, these materials were developed to enhance children's bilingual abilities and foster a healthy sense of linguistic and cultural identity. To this end, they are rich with content about the Korean language and culture, and great effort was made to showcase the diverse and colorful aspects of language and culture. We hope that through 'Fun Korean for Young Children Around the World,' many overseas Korean children will joyfully learn Korean. We extend our heartfelt thanks to the development team and publishing staff who dedicated their care and effort to bringing these educational materials to life.