Description: The number of overseas Koreans worldwide has steadily increased, now surpassing 7.4 million. For overseas Koreans to live with a healthy sense of identity and pride, Korean language education tailored to their unique circumstances is essential. Since language development varies by age, it is also important to provide age-appropriate Korean language instruction. Building on its previous achievements in developing customized textbooks, the National Institute of Korean Language has been working to create Korean language educational materials for preschool-age children (ages 3-6) of overseas Koreans. 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 Young Children Around the World' series was published, consisting of 6 activity workbooks for young children, 2 teacher's guides, 1 Hangeul play book, and 1 big picture book. These educational materials are designed to be easy and convenient for children, teachers, and parents alike. Children can enjoyably 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 reinforce the Korean their children learn at school through home-connected activities. In particular, these materials were developed to enhance children's bilingual abilities and foster a strong sense of linguistic and cultural identity. They are rich in content about the Korean language and culture, and great care was taken 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 have a joyful and exciting experience learning Korean. We extend our heartfelt thanks to the dedicated development team and everyone at the publishing house whose hard work and care made these educational materials possible.