“OO” is a 2-sound superstar… but also a little chaos goblin. In English, OO is pronounced two ways: like the sound in zoo or the sound in book. There are helpful word families, but no hard-and-fast rule that works 100% of the time—so we teach patterns flexibility, not memorized “rules.” /oo/ as in ZOO Think of these as the “zoo words”: • -oon: moon, soon, noon • -ool: pool, school, cool • -oom: room, broom • -oot: boot, root /ʊ/ as in BOOK 📚 These tend to be the “book words”: • -ook: book, look