Level 0 · Orientation: the five tones
Round 1 · The five tones
Hear the five tones of Thai on the syllable /na/: mid, low, falling, high, rising. ~10–15 minutes — real words start in this session.
Preview drill (audio only, no letters yet): ขา (rising), ข่า (low), ข้า (falling) — the same letters, three different words.