RF.1.2: Hearing Vowels, Blending and Segmenting
Also written as CCSS.ELA-LITERACY.RF.1.2 · Cluster: Phonological Awareness.
The Official Wording
Demonstrate understanding of spoken words, syllables, and sounds (phonemes).
Common Core State Standards, Grade 1, Reading: Foundational Skills · Read it at the source · Checked October 14, 2026
What RF.1.2 Means in Plain English
First graders work by ear with one-syllable words: they hear whether the vowel is short, as in slim, or long, as in slime; blend sounds into words, including blends like /sl/; pick out the first, middle vowel and last sound; and split a word into every sound.
Slime has four sounds, not five: the ear counts sounds, not letters, so this work happens with the print out of sight. Kindergartners rhymed and blended simpler words (RF.K.2). There is no 2nd-grade version; the ear work feeds straight into reading long and short vowels in RF.2.3.
RF.1.2 I Can Statements
- I can hear if a vowel sound is long or short.
- I can blend sounds together to say a word.
- I can say every sound in a word, in order.
RF.1.2 Worked Example
Ear games on one word pair, slim and slime, in the order the lettered parts RF.1.2a to d list them.
With no print in sight: tell whether the vowel in slim and in slime is short or long, blend /s/ /l/ /ī/ /m/, name the first, middle and last sounds in slim, and say every sound in slime.
- Say slim, then slime, and listen to the middle. In slim the vowel is short. In slime it says its name, so it is long.slim: short /i/ · slime: long /ī/
- Listen and blend: /s/ /l/ /ī/ /m/. Keep /s/ and /l/ close together, then push all four sounds into one word./s/ /l/ /ī/ /m/ → slime
- What is the first sound in slim? The middle vowel? The last? The first sound is just /s/, not /sl/.first /s/ · vowel /i/ · last /m/
- Say every sound in slime, one finger per sound./s/ /l/ /ī/ /m/ = 4 fingers
- Now sort by ear: thumbs up for a long vowel, thumbs down for a short one.flame ↑ · flag ↓ · smile ↑ · spin ↓
Check it: Say a new word, plate, with the child’s eyes closed. Four fingers, /p/ /l/ /ā/ /t/, and “long” for the vowel mean the skills carry over.
Common Mistakes with RF.1.2
Keeping a blend glued together
Says slim has three sounds: /sl/ /i/ /m/
Try this: Stretch the start slowly, sss-lll, and push one counter into a box per sound so the blend fills two boxes.
Counting letters, not sounds
Says slime has five sounds because it has five letters
Try this: Keep print out of sight for this work and tap one finger per sound heard; slime gets four taps, never five.
Thinking long means stretched out
Calls the vowel in slim long after saying “sliiiim” slowly
Try this: Define long as “the vowel says its name”: ask whether you hear the letter name i, as in slime, or not.
Where RF.1.2 Fits
Practice RF.1.2
Quick Check
- Is the vowel in slime long or short?
- Blend these sounds: /f/ /l/ /a/ /g/.
- How many sounds are in slime?