1-1. The Historical Background of Hangul
1-2. The structure of syllable
1-3. Formation of Vowel, Chun-ji-in principle
1-4. Combined vowels & Korean consonants ‘ㅇ’
1-5. Vowels Writing practice
1-6. Vowels Pronunciation practice
1-7. Principle of forming Hangul consonants, 5+14
1-8. Korean consonants ㅇ,ㅎ + Korean vowels
1-9. Korean consonants ㄴ,ㄹ,ㅁ + Korean vowels
1-10. Korean consonants ㄱ,ㅋ,ㄲ+ Korean vowels
1-11. Hangul consonants ㅂ,ㅃ,ㅍ + Hangul vowels
1-12. Korean consonants ㄷ,ㄸ,ㅌ + Korean vowels
1-13. Korean consonants ㅈ,ㅊ,ㅉ + Korean vowels
1-14. Korean consonants ㅅ,ㅆ + Korean vowels