Rabbit Doubling Rule Worksheet
1-1-1
The Doubling Rule Rabbit Rule
When and why to double the final consonant before adding vowel suffixes
Name:
Date:
The Golden 1-1-1 Rule Vowel Suffixes: -ed, -ing, -er, -est
When a base word has 1 syllable, 1 short vowel, and ends in 1 consonant, DOUBLE the final consonant before attaching a suffix that starts with a vowel!
1. Syllable hop 1 clap
2. Short Vowel hop short /ŏ/
3. End Consonant hop single p
+ Vowel Suffix hop + p + ed = hopped
⚠️ Do NOT double if: 2 vowels (sleep → sleeping) • 2 ending consonants (jump → jumped) • Consonant suffix (sad → sadly)
1 1-1-1 Inspector: Test each word & decide
Check each column with ✓ or ✗
| Base Word | 1 Syllable? | 1 Short Vowel? | 1 Final Consonant? | Suffix | Double it? | New Word |
|---|
| swim | ✓ | ✓ | ✓ | -ing | YES | swimming |
| clap | | | | -ed | | |
| help | | | | -ing | | |
| run | | | | -er | | |
| rain | | | | -ed | | |
| big | | | | -est | | |
2 Rabbit Hop: Double or Just Add?
Circle the correct action, then write the combined word
grab + -ed
Double Just Add
jump + -ing
Double Just Add
nod + -ing
Double Just Add
paint + -er
Double Just Add
fit + -est
Double Just Add
clean + -ed
Double Just Add
The Doubling Rule Worksheet • Phonics & Morphology Page 1 of 2
PART II
Application & Detective Proofreading
Name:
3 Word Factory: Transform the Base Words
Add both suffixes correctly to each base word
| Base Word | + Suffix 1 (-ing / -ed) | + Suffix 2 (-er / -est / -ed) |
|---|
| 1. skip | + -ing = | + -ed = |
| 2. hot | + -er = | + -est = |
| 3. bat | + -er = | + -ing = |
| 4. jog | + -ed = | + -er = |
4 Spelling Detective: Find & Fix the 5 Mistakes
5 Errors Hidden Below
Yesterday, Ben was runing through the park when a tiny bunny hoped out of the bushes. Ben stoped suddenly so he wouldn’t scare it. It was the cuttest rabbit he had ever seen! Ben stood still, claping softly with delight as it munched a clover.
1. Error → Fix
2. Error → Fix
3. Error → Fix
4. Error → Fix
5. Error → Fix
5 Rule Defense: Why don't these words double?
Why is jumping spelled with one p?
Why is sleeping spelled with one p?
6 Rabbit's Super Sentence Challenge
Write a complete sentence using at least TWO words that followed the 1-1-1 Doubling Rule (e.g., stopped, planned, winner, biggest, hopping):
The Doubling Rule Worksheet • Phonics & Morphology Page 2 of 2
