Word family
The -at word family
The answer
The -at word family is every one-syllable word that ends in the rime at, said /at/. Our lexicon has 18 public words in it: 9 with one consonant first, 5 with a blend, 3 with a digraph or silent-letter pair and 1 with no sound before the rime.
What is in this family?
The at family is usually the first word family children meet, and short words like cat, sat, bat and mat fill early books. It is the simplest rime there is: one short vowel and one consonant. Our list also has a few harder words, including blends (brat, slat, spat, splat) and gnat, where the g is silent. That gives the family a range from day-one words to three-sound onsets.
The words, sorted by what comes before the rime
One consonant before the rime
| Word | Onset + rime | Readable after |
|---|---|---|
| cat | c + at | Lesson 14 |
| hat | h + at | Lesson 23 |
| sat | s + at | Lesson 4 |
| bat | b + at | Lesson 17 |
| fat | f + at | Lesson 7 |
| pat | p + at | Lesson 6 |
| rat | r + at | Lesson 24 |
| vat | v + at | Lesson 33 |
| mat | m + at | Lesson 4 |
A blend before the rime
| Word | Onset + rime | Readable after |
|---|---|---|
| flat | fl + at | Lesson 26 |
| brat | br + at | Lesson 24 |
| slat | sl + at | Lesson 26 |
| spat | sp + at | Lesson 6 |
| splat | spl + at | Lesson 26 |
A digraph or silent-letter pair before the rime
| Word | Onset + rime | Readable after |
|---|---|---|
| that | th + at | Lesson 46 |
| chat | ch + at | Lesson 48 |
| gnat | gn + at | Lesson 118 |
No sound before the rime
| Word | Onset + rime | Readable after |
|---|---|---|
| at | (none) + at | Lesson 4 |
Word ladder: change one sound at a time
Every step is a real word from the list, and each one changes exactly one sound. Say the change aloud before the student writes the new word.
| Step | Word | The change |
|---|---|---|
| 1 | at | start here |
| 2 | cat | add /k/ |
| 3 | hat | change /k/ to /hh/ |
| 4 | sat | change /hh/ to /s/ |
| 5 | that | change /s/ to /dh/ |
| 6 | bat | change /dh/ to /b/ |
| 7 | fat | change /b/ to /f/ |
| 8 | flat | add /l/ |
| 9 | slat | change /f/ to /s/ |
| 10 | spat | change /l/ to /p/ |
Rhymes spelled another way
These words rhyme with the family but spell the rime differently, so they belong to other families. Expect students to mix them up when spelling.
| Spelling | Words |
|---|---|
| -atte | matte |
How do you teach it?
Start with onset swaps using single consonants: cat, bat, fat, mat, pat, sat. Students say the new first sound, then read the word. Add the blends only when single swaps are quick and accurate.
"Cover the c. What's left? /at/. Now uncover it: /k/, /at/, cat. Change /k/ to /m/: mat. Change /m/ to /s/: sat. Only the first sound changes. The /at/ stays."
What is the common error, and the fix?
Students sometimes read the first letter and guess a word that starts the same way, so cat becomes "cup". The fix is to read the rime first, /at/, and then add the onset. Covering the first letter with a finger makes the step visible.
Sort it: a hands-on activity
Give students the rime card at and a stack of onset cards (c, b, f, m, p, r, s, v, br, sl, sp, spl). They build each word, read it and decide whether it is real. Then they sort the real words by how many sounds come before at.
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. A family is every one-syllable base word (no suffix, not a compound) whose rime, the vowel unit and every unit after it, has the same spelling and the same sounds, so bead and bread are in different families. Ladders use only words from the list, and each step changes exactly one sound.
"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
How many words are in the -at family?
Our lexicon has 18 one-syllable words ending in at that a student can practice. Words used in our assessments are left out, so a few common words may be missing from the list.
Is that in the at family?
Yes. That has a digraph, th, before at. It is one of the most common words in English, so it is worth pointing out that it follows the family.
What is a word ladder?
A chain of real words where each step changes one sound: swap a sound, add one, or take one away. Students say the change before they write it, which trains them to hear every sound in the word.