Description: This textbook was compiled and edited by a team of Korean language education experts who have volunteered since 2005 in a free Korean language program for foreigners living in Korea. Drawing on materials actually used in the program over the past seven years, the book carefully selects high-frequency grammar points for beginner and intermediate levels, matched to each stage of Korean language learning, while reinforcing language skills across all areas. The lessons are structured to naturally connect speaking, writing, listening, and reading, and include sections such as "Expanding Expressions" and "Adding Wings" to help learners develop deeper language ability and fluency. Lesson 1: Travel — "I'm thinking of traveling as soon as the holiday starts" (Grammar) -neundagoyo?, -eulgeolyo, -neun daero (Function) Confirming information, making suggestions Lesson 2: Weather and Daily Life — "It was nice in the morning, but suddenly it's raining" (Grammar) -deoni, -neundamyeon, -euljido moreuda, -gibodaneun (Function) Talking about changes, persuading, expressing guesses Lesson 3: Habits — "If you keep smoking, your health will get worse" (Grammar) -daganeun, -go malda, -deorado (Function) Talking about expected results, talking about mistakes, expressing determination Lesson 4: Consumption — "I used it until last year, but I don't need it anymore, so I'm going to throw it away" (Grammar) -eotdeon, -deunji, -neundedo, irado (Function) Talking about experiences, making choices, making suggestions Lesson 5: Misunderstandings and Arguments — "I got a bit irritated, and it seems he got upset" (Grammar) -deondeyo, -eotdeoni, -na boda (Function) Making recommendations, expressing guesses Lesson 6: Living Environment — "Wouldn't it be better to get a boarding house instead of looking for a studio?" (Grammar) -neun baram-e, -neun daesin(e), -gimanhada (Function) Giving reasons, suggesting alternatives, making requests Lesson 7: Popular Culture — "It's popular not only in Korea but also abroad" (Grammar) -eul ppun(man) anira, -eul higa eopda, -neun mankeum (Function) Expressing preferences, giving opinions Lesson 8: Modern Society — "Far from greeting each other, neighbors don't even acknowledge one another" (Grammar) -gineunkeonyeong, -neun cheokhada, -gineun haedo (Function) Talking about experiences, persuading Open Korean is based on the textbook used over the past seven years in the Korean language classes of the International Exchange Volunteer Network, sponsored by the Korea Foundation. This free Korean education program, run since 2005 by volunteer Korean language education experts at the Korea Foundation Cultural Center, serves foreigners living in Korea. Each year, about 2,000 students from roughly 80 countries participate, with around 250 students currently attending classes ranging from beginner to advanced levels, meeting once a week for two hours. The textbook selects and refines high-frequency grammar points for beginner and intermediate levels based on materials used in this program, reinforcing language functions across all skill areas. It is designed to connect speaking, writing, listening, and reading naturally, with sections like "Expanding Expressions" and "Adding Wings" to build deeper language ability and fluency. In addition, a teacher's guide has been published to help instructors use the material more effectively, expanding the previously limited range of teacher resources to now cover both beginner and intermediate levels. The guide includes clear lesson plans, detailed teaching methods, real classroom examples, and a variety of classroom activities and worksheets, aiming to fully satisfy both students and teachers as a complete Korean language textbook. Great care was also taken to include beautiful illustrations throughout, setting this textbook apart from others and making it more approachable and friendly for students. 1. Classroom activities for each grammar point are included together with a separate activity workbook ("A Peek into the Korean Classroom," sold separately for beginner and intermediate levels). 2. Real classroom journal examples are provided, offering valuable insight into student responses and classroom atmosphere. 3. Detailed lesson plans cover essential Korean grammar, including how to introduce, present, practice, and apply each grammar point.