Onset and rime activities for small groups
By the IEP Atlas editorial teamLast updated
Short answer
Onset and rime activities teach students to split a syllable into its first consonant sound (the onset, like /m/ in map) and the rest (the rime, -ap), and to put the two parts back together. Start with oral blending, then splitting, then move to word-family letter tiles. Five minutes a day with 10 items is enough for most groups.
The onset is every consonant sound before the vowel in a syllable. The rime is the vowel and everything after it. In "map," the onset is /m/ and the rime is "ap." In "stop," the onset is /st/ and the rime is "op." Words like "it" have no onset at all.
Onset and rime is the bridge between syllables and single sounds on the phonemic awareness continuum. It is a short stop. Most students who can blend onset and rime are ready for phoneme blending within a few weeks. The pillar on phonemic awareness interventions shows where it fits in a full routine.
What to check before you start
Probe two things with 10 items each: blending ("/s/ ... un. What word?") and splitting ("Say sun in two parts"). Use pictures for a student who struggles to hold words in mind. If the student scores 8 or more of 10 on both, skip ahead to phoneme blending activities.
Also check letter-sound knowledge. If the student knows at least 5 consonant sounds and the short /a/, you can use letter tiles from the start of step 4.
Step-by-step onset and rime activities
Step 1: Puppet talk (blending)
A puppet "talks in two parts," and students fix what it says. "Froggy says /f/ ... an. What did he say?" Students answer "fan." Pause a full second between the parts at first, then shorten the pause.
Word list with single-sound onsets: /s/ ... at, /f/ ... un, /m/ ... op, /l/ ... eg, /r/ ... ug, /d/ ... ish, /n/ ... et, /p/ ... ig, /h/ ... at, /b/ ... ed.
Start with stretchy onsets like /m/, /s/ and /f/. They are easier to hold than stop sounds like /b/ and /d/.
Step 2: Picture slide (blending with support)
Lay a picture card face down. Say the onset while touching the left edge of the card, and the rime while touching the right edge. Slide your finger across and flip the card as students say the word. The motion shows that the two parts join into one word.
Step 3: Split the word (segmenting)
"Say mop. Now say just the first part." Students: "/m/." "Now the rest." Students: "op." Students can jump forward once for the onset and once for the rime.
Word list: mop, sun, fig, net, hat, rug, bell, kite, soap, fish. Add words with blended onsets only after the student splits single onsets with 8 of 10 correct.
Step 4: Word-family tiles (with letters)
Put a rime card, such as "at," in front of the student. Line up onset letter tiles above it: m, s, h, p, r, b. The student slides one onset tile next to the rime and reads the word: mat, sat, hat. Then the teacher says a word and the student builds it.
Rime cards to use first: -at, -ip, -op, -ug, -en. These rimes make many real words with common consonants.
Step 5: Onset swap (manipulation at the onset level)
"Say fan. Now change /f/ to /m/." (man) "Change /m/ to /k/." (can) Do this orally first, then with tiles. It previews phoneme substitution at an easier level, since the student only changes the onset.
Step 6: Blended onsets
Once single onsets are solid, use onsets with two consonants: /st/ ... op, /fl/ ... ag, /tr/ ... ain, /sn/ ... ack, /gr/ ... ab, /sl/ ... ed. Students blend first, then split. Keep the blend together as the onset; splitting /s/ from /t/ is phoneme work for later.
Worked example: Ana, early 1st grade
Ana is a fictional 1st grader with an IEP for reading. In September she blends onset and rime in 4 of 10 items and splits words in 2 of 10. She knows 14 letter sounds, including short /a/ and /i/.
Her special education teacher plans 5 minutes of onset-rime work at the start of each 30-minute session, 4 days a week. Probes are 10 new items every Thursday.
| Week | Blending (of 10) | Splitting (of 10) | What changed |
|---|---|---|---|
| Baseline | 4 | 2 | Steps 1 and 2 |
| 1 | 6 | 3 | Add step 3 with jumping |
| 2 | 8 | 5 | Add step 4 with -at and -ip tiles |
| 3 | 9 | 7 | Add -op and -ug cards |
| 4 | 9 | 8 | Add step 5 onset swaps |
| 5 | 10 | 9 | Move to phoneme blending; keep tiles |
By week 5 Ana reads 14 of 20 word-family words built with tiles. The team now targets phoneme-level blending and segmenting with letters, which is closer to what she needs for decoding.
A goal written in September could read: "Given 10 spoken words said as onset and rime, Ana will blend the parts and say the word in 9 of 10 on 3 consecutive weekly probes." Baseline: 4 of 10. See the blend an onset and rime template and the split a word into its onset and rime template. For a student who answers by pointing, use onset-rime blending with picture choices.
Common mistakes
- Weak: Splitting "stop" as /s/ ... top. Better: The onset is every consonant before the vowel: /st/ ... op.
- Weak: Saying "buh ... at" for "bat." Better: Clip the onset short, /b/, so the parts blend into a real word.
- Weak: Teaching word families for months as a reading method. Better: Use families briefly, then move to reading each sound left to right. Students who rely on families often stall on words outside them.
- Weak: Long pauses between onset and rime forever. Better: Shorten the pause each week until it is under half a second.
- Weak: Only oral practice for a student who knows letter sounds. Better: Put the onset and rime on tiles once the student knows the letters.
Tools and templates
- Find full goal wording on the phonological awareness goals page.
- Use the opportunity trial data sheet for the 10-item probes: one box per word, plus or minus, total at the bottom.
- Students who need to work on syllables first can start with syllable segmenting activities.
- Paste a draft goal into the goal checker to find missing parts.
The What Works Clearinghouse guide for kindergarten to grade 3 recommends moving students toward awareness of individual sounds and linking those sounds to letters.[1] Onset and rime gets students there faster when it is short and uses tiles early.
Frequently asked questions
What is an example of onset and rime?
In the word map, the onset is /m/ and the rime is ap. In stop, the onset is the blend /st/ and the rime is op. A word that starts with a vowel, such as it, has a rime but no onset.
Is onset and rime the same as word families?
Word families use written rimes, such as at in cat, hat and mat. Onset and rime is the oral skill underneath. Word-family tiles are a good way to link the oral skill to letters, but use them briefly.
When should a student move from onset and rime to phonemes?
When the student blends and splits onset and rime in about 8 of 10 items on two probes. Many students are ready in a few weeks. Probe phoneme blending early, since some students can do it before onset-rime is perfect.
Use it in IEP Atlas
- Phonological awareness goals (reading)
- Phonemic awareness in the IEP glossary
- Phonological awareness in the IEP glossary
- Opportunity trial data sheet
- IEP goal checker
Related guides
- Phonemic awareness interventions for students with IEPs
- Syllable segmenting activities, from clapping to long words
- Phoneme substitution activities and word chains
- Blending sounds activities: phoneme blending in teaching order
- Rhyming activities for kindergarten intervention
- Phoneme deletion activities, with letters and without
Sources
- Foundational Skills to Support Reading for Understanding in Kindergarten Through 3rd Grade, What Works Clearinghouse, Institute of Education Sciences
Written and checked by the IEP Atlas editorial team under our editorial policy. This guide describes general practice and federal rules. It is not legal advice; your state may add requirements, and the IEP team makes the decisions for each student.