Read words with the vowel team oa, which makes the long o sound.
Long o has its own team too: oa, like in "boat." Just like ai, ee, and ea, the two vowels team up to make one long sound instead of two.
Oa almost always shows up in the middle of a word, never at the very end. That is one more clue to help you spot it.
Mastery looks like: They read oa words with the correct long o sound and recognize the team in new words.
Common stumbles: Confusing oa with the silent-e o_e pattern and expecting an e at the end of the word.
See it visually
Interactive, spoken-aloud tools that show this idea in motion.