A vowel team is two letters — sometimes three — working together for a single vowel sound: ai in 'rain', oa in 'boat', ee in 'tree', ea in 'team', ay in 'play', igh in 'night'. Not every team makes a long vowel: ou in 'cloud' is its own sound entirely. This is the point where one sound starts having several possible spellings, and spelling becomes noticeably harder than reading.
How it is taught
Teams are introduced a few at a time, each with a keyword the child can fall back on — the 'rain' spelling of long a, the 'boat' spelling of long o — so that a team is recalled as a whole unit rather than sounded out letter by letter. Where two teams spell the same sound, the choice is taught by position rather than left to chance: ai sits inside a word ('rain', 'mail', 'paint') and ay sits at the end ('play'). Sorting words by their team, rather than by their sound, is the usual practice activity.
Where children get stuck
- 'When two vowels go walking, the first does the talking' works for rain, boat and team, then fails for 'cloud', 'bread' and 'said' — children who learned it as a rule mis-read every exception.
- ea is the least reliable team on this list: it is long e in 'team', 'beach' and 'dream', but short e in 'bread' and long a in 'great'.
- Spelling is where the real errors are — 'rane' for 'rain', 'bote' for 'boat' — because the sound alone cannot tell a child which of several correct-sounding spellings this word uses.
- igh in 'night' and 'light' has no vowel sound in the gh at all, and is easier learned as a three-letter chunk than reasoned out.
Word list
All 20 words here are single-syllable, so they are read and spelled whole.