Complete the word with the right diphthong: oi, oy, ou, ow
Key Notes :
🎯 When two letters blend together to make a vowel sound, that sound is called a diphthong.
🎯 The diphthongs oi and oy make the same vowel sound. At the beginning of a word or in the middle of a word, the oi spelling is usually used. At the end of a word, the oy spelling is used.


🎯 The diphthongs ou and ow can also make the same vowel sound. At the beginning of a word or in the middle of a word, you have to remember which spelling to use. At the end of a word, only the ow spelling is used.


Learn with an example
🏫 Listen to the word. Then, fill in the missing diphthong.
gr___l
- l
- oy
- ow
- Add the diphthong ow to make the word growl. When the ou/ow sound is in the middle of a word, you have to remember which spelling to use.
🏫 Listen to the word. Then, fill in the missing diphthong.

m ____th
- ou
- oi
- Add the diphthong ou to make the word mouth. When the ou/ow sound is in the middle of a word, you have to remember which spelling to use.

🏫 Listen to the word. Then, fill in the missing diphthong.

j____
- ou
- oy
- Add the diphthong oy to make the word joy. At the end of a word, the oy spelling is used.

Let’s practice!