Syllable division
V/V words: divide between two vowels
The answer
In a V/V word, two vowels sit side by side but belong to different syllables, so you divide between them: li/on, po/em, di/et. The first vowel is usually long. Our lexicon has 20 two-syllable V/V words, shown divided.
How does it work?
Most of the time, two vowels together are a team that spells one sound. V/V words are the exception, and students need to know they exist or they will read "lion" as one syllable. The clue is usually the first vowel: it is long and ends an open syllable (li/on, cre/ate). Our list is short on purpose. It includes only words where each vowel spells its own sound in the pronouncing dictionary, so every example is a true V/V split.
The word lists, divided
Single vowel then vowel (li/on)
| Word | Divided | Readable after |
|---|---|---|
| via | vi/a | Lesson 68 |
| poem | po/em | Lesson 68 |
| poet | po/et | Lesson 68 |
| chaos | cha/os | Lesson 118 |
| quiet | qui/et | Lesson 68 |
| trial | tri/al | Lesson 68 |
| science | sci/ence | not taught |
| ion | i/on | Lesson 68 |
| bias | bi/as | Lesson 68 |
| dial | di/al | Lesson 68 |
| diet | di/et | Lesson 68 |
| dual | du/al | Lesson 68 |
| lion | li/on | Lesson 68 |
| riot | ri/ot | Lesson 68 |
| ruin | ru/in | Lesson 68 |
| fluid | flu/id | Lesson 68 |
| giant | gi/ant | Lesson 117 |
| client | cli/ent | Lesson 68 |
| fluent | flu/ent | Lesson 68 |
| triumph | tri/umph | Lesson 68 |
How do you teach it?
Teach V/V after vowel teams, as a contrast. Show "boat" (one team, one sound) beside "poet" (two vowels, two sounds). Students say both and count the syllables. The habit to build: if the team reading makes a non-word, split the vowels and try again.
"Look at 'giant'. I and a, side by side. Is 'ia' a team you know? No. So we split them: gi/ant. The first syllable is open, long i. Then 'ant', with a schwa. Giant."
What is the common error, and the fix?
Students read "diet" as "deet" or "poem" as "pome", forcing a team where there isn't one. The fix: when two vowels together make a word you don't recognize, split them, read the first one long and try again.
Sort it: a hands-on activity
Mix V/V cards (lion, poem, trial, fluid) with vowel team cards (rain, boat, seed, cloud). Students clap each word and sort by syllable count. Then they draw the split line in each V/V word.
How this list was built
Every word comes from our lexicon of about 19,000 common words, each checked against a pronouncing dictionary and split into spelling units. Words a student meets in our assessments and progress-monitoring probes are left out, so practicing a list never rehearses a test. The lexicon gives syllable counts but not boundaries, so each split is worked out from the consonant and vowel units between the first two vowel sounds, using a long or short first vowel to choose V/CV or VC/V, and checked by hand. Words where that method is unreliable are left out. Compound splits come from the two words that make up the compound.
"Readable after" is the first lesson in the lesson sequence at which our decodability engine finds every sound-spelling in the word taught; "not taught" means the word has a spelling the sequence does not cover, so it is read with help. You can check your own lists and passages with the free decodable text checker.
Questions people ask
What is a V/V split?
A division between two vowels that sit next to each other but spell separate sounds, as in li/on and po/et. Each vowel belongs to its own syllable.
How do you know two vowels aren't a vowel team?
Read the team sound first. If that makes a non-word, split the vowels and read the first one long. Pairs like ia, io and ua are almost never teams in English.
Why is this list so short?
V/V splits are less common in short words, and we keep only words where our data shows each vowel with its own sound. Our list has 20, including via, poem, poet, chaos.