UP:ELA21.2.38g

Vowel teams are a combination of two, three, or four letters that represent for one vowel sound.
Diphthongs are single vowel phonemes that glide in the middle.

Encode (spell) words with common vowel teams and diphthongs, such as ai, ay, ea, ee, ei, igh, oa, ow, ou, ue, ew, eigh.

Vowel teams are a combination of two, three, or four letters that represent one vowel sound.
Diphthongs are a combination of vowels that glide in the middle due to a shifting mouth position.