Long o inside a word. Highly reliable, and like ai it does not end English words — ow does that.
Vowel teams
oa TEAM_OA_01
Strong rule · High reliability · Common · Early · Reading and spelling
/əʊ/ long o: boat, coat, road
Where Wiggler teaches it: Skill 9: Vowel Teams (Long)
Child explanation
O and a together say /əʊ/ — the name of o. Boat, coat, road.
The rule
Oa represents long o, /əʊ/, at the beginning or in the middle of a word.
What is really going on
Consistent for /əʊ/ except before r, where it becomes /ɔːr/ (board, roar, soar), and in broad, where it is /ɔː/. Like ai and oi, it does not appear word-finally.
Position in the word
Beginning of a word — Reliable. For example: oak, oat, oath.
Middle of a word — The usual position. For example: boat, road, coat, toast.
End of a word — Oa does not end English words; ow does.
Made-up words that follow the rule. A child who reads these has the pattern rather than the vocabulary.
bloat, shoad, froap
Exceptions
oa before r: board, roar, soar, hoarse, coarse. R-controlled: /ɔːr/ rather than long o.
broad: broad, abroad. A one-off: /brɔːd/, not /brəʊd/.
Contrast pairs
boat versus bot — Team versus single vowel.
road versus rode — Two spellings of long o — homophones.
coat versus cot — Team versus single vowel.
Decodable sentences
The goat is on the road.
Float the boat and toast the bread.
My coat has soap on it.
Teacher note
Teach oa with ow as a pair the way ai goes with ay — middle of the word, oa; end of the word, ow. The catch is that ow has a second sound, so introduce oa first and let it be secure before the ow lesson complicates things.