Vowel Teams: Which Spelling Makes Which Sound
A vowel team is two or more letters that work together to make one vowel sound. In rain the letters ai say /ā/, in tree ee says /ē/, and in boat oa says /ō/. There are over twenty common teams, and many have a rule about where they sit in a word. This guide lists them by sound, explains which spelling to choose, and shows where several teams share (or switch) sounds.
Teams by sound
| Sound | Teams and examples |
|---|---|
| long a (/ā/) | ai rain, ay day, ea great, ei/eigh eight, vein |
| long e (/ē/) | ee tree, ea eat, ey key, ie field |
| long i (/ī/) | igh high, ie pie |
| long o (/ō/) | oa boat, ow snow, oe toe |
| /oo/ (moon) | oo moon, ue blue, ew new, ui fruit |
| short oo (book) | oo book, look, foot |
| /ow/ (cow) | ou cloud, ow cow |
| /oi/ (coin) | oi coin, oy boy |
| /aw/ (saw) | au haul, aw saw, al salt |
Teams that make the same sound are the reason spelling feels hard. The rest of this guide gives the rules that decide between them.
Rule 1: Position often decides
Several pairs have the same sound but different places in the word.
| Sound | In the middle | At the end |
|---|---|---|
| /ā/ | ai: rain, mail, train | ay: day, play, stay |
| /oi/ | oi: oil, coin, join | oy: boy, toy, joy |
| /aw/ | au: haul, cause, sauce | aw: saw, paw, draw |
| /ō/ | oa: boat, coat, road | ow: snow, grow, show |
English words do not usually end in ai, oi, au or oa. If you hear one of those sounds at the very end of a word, reach for ay, oy, aw or ow. The exceptions are few and mostly loanwords.
Rule 2: The ea team has three sounds
The ea team is the best example of a team with more than one sound.
- /ē/ (most common): eat, sea, leaf, team, beach, cream.
- short e (/ĕ/): bread, head, dead, ready, heavy.
- long a (/ā/): great, break, steak. Only a few words use this one.
Teach /ē/ first and tell children to try it first when they meet an unfamiliar ea word. If the word does not make sense, try short e, then long a. The three long-a words make a short list to memorize.
Rule 3: The oo team has two sounds
- Long (/oo/): moon, food, zoo, pool, tooth, spoon.
- Short (book): book, look, foot, good, wood, cook.
The long sound is more common, but the short one shows up in many of the first words children learn. Offer both and let the child decide which one sounds right.
Rule 4: ow and ou also have two jobs
- ow says /ō/ in snow and /ow/ in cow. At the end of a word it can be either. Before n, l or er it usually says /ow/ (down, brown, town).
- ou often says /ow/ in the middle of a word (out, cloud, house). It has other sounds, too, as in soup and young.
For these, "try both" is the honest strategy.
Rule 5: Teams that end a word
Because English words rarely end in u, a final /oo/ or /yoo/ sound is spelled ue (blue, glue, true, due) or ew (new, few, grew, flew). In both, the second letter is part of the team or silent, not a separate sound. Similarly, oe at the end says /ō/ (toe, doe), and ey says /ē/ in key and monkey.
Rule 6: Silent partners
Some teams include a silent letter:
- igh says /ī/ and the gh is silent (high, night, light, flight).
- ie at the end of a short word says /ī/ (pie, tie, lie) and in the middle often /ē/ (field, chief).
- ui says /oo/ in fruit and juice (and is different in build and guide).
Vowel team or diphthong?
The terms overlap. A vowel team is a spelling label used in classrooms: letters that make one vowel sound. A diphthong is a linguistic label for a vowel sound that glides, such as the /oi/ in coin or the /ow/ in cow. Many programs list oi, oy, ou and ow as diphthongs and the rest as vowel teams. Either way, the practical advice is the same: teach the spelling, the sound and where it appears in a word.
How to teach vowel teams
One team at a time, grouped by sound. Start with long a (ai, ay), then long e (ee, ea), then long o (oa, ow). Introduce the second sound of a team only after the first is secure.
Always give position information. "ai in the middle, ay at the end" is the kind of rule that saves children from guessing.
Use a sort. Give ten words on cards and three teams (ai, ay, ea). Children read each word and place it. Include one that does not fit and discuss why.
Read in sentences. A decodable sentence such as "The snail sat on the rail in the rain" lets kids hear the same sound in several spellings.
Keep an "exceptions" card. For ea, add great, break, steak. For oo, add blood, flood. A short list is easier to remember than a vague warning.
A quick check
A child knows a team when they can read five words with it, spell five words by ear, say where it appears in a word and name one exception if there is one. If a team has more than one sound, check each sound separately.
Where vowel teams fit
Vowel teams are one of the six syllable types (see the syllable types guide). They come after short vowels and magic e in most sequences, and they lead naturally into r-controlled vowels, where the r changes the sound again. See the bossy r guide. The ei/ie confusion is covered in the i before e guide, and the full sequence is in the spelling rules list.
Posters for each team
Phonics & Spelling Rules Posters has a poster for each team in this guide: ai, ay, ee, ea (three posters, one per sound), ey, ie, igh, oa, ow (two posters), oe, ue, ew, ui, oo (two posters), ou, oi, oy, au, aw and ei/eigh. Each has a plain-language rule, six example words, a contrast and a decodable sentence. They are part of the full set of 130, in color and black & white, in full-page, half-page and mini sizes.