Vowels
Diphthongs
A diphthong is a vowel sound that slides from one position to another inside a single syllable, as in coin, boy, out and cow. Your mouth moves while you say it, which is what separates a diphthong from a vowel team that holds one steady sound.
oi and oy are the same sound in different positions, and so are ou and ow. Teaching each pair together, with the position rule, saves teaching four separate things.
Patterns and example words
Every word below is from the word list Cody generates from, not a hand-picked sample. The count is how many words in that list carry the pattern.
oi
512 wordspoint pointed pointing points join joined joining joins
oy
502 wordsenjoy enjoyed enjoying enjoys boy boys employee employees
ou as in south
1,427 wordsour ours about out house housed houses housing
ow as in plow
825 wordsnow how down however allow allowed allowing allows
au
1,995 wordsbecause cause caused causes causing pause paused pauses
aw
518 wordssaw law laws draw drawing drawings drawn draws
Curricula that teach this
Cody generates material against the scope and sequence you already teach. This skill appears in Cody Curriculum, Custom Pattern Selection, UFLI Inspired.
Make a decodable story for this skill
Cody generates stories, word lists and worksheets constrained to the patterns a student has already been taught, so practice on diphthongs does not smuggle in something they have not met yet.