When to Use 'ck' or 'k' — Spelling Worksheet for 10-Year-Olds (English, Phonics)

Instructions

This worksheet focuses on the rule for deciding whether to use -ck or -k at the end of a word or syllable. Read the rules carefully, then complete the activities below.

The CK/K Rule Refresher

1. Use -ck: Use the letter combination ck immediately after a single, short vowel sound at the end of a word or syllable. (Examples: duck, block, truck—note the short vowel a, e, i, o, or u comes right before the /k/ sound).
2. Use -k: Use the letter k if the /k/ sound comes after a consonant, a long vowel, or a vowel team (like ea, ai, oo). (Examples: dark, speak, chik, stroke—the vowel is long or there is a consonant preceding the sound).

Section 1: Applying the Short Vowel Check (The Vowel Test)

Directions: Fill in the blank with either -ck or -k to complete the word. Read the word aloud to test the vowel sound that comes before the missing letters.

1. I brought a sna__ to school today. (Short 'a' sound)
2. Can you lea__ over and tie your shoe?
3. My father works in a fast-paced offi__.
4. The large shi__ sails across the ocean.
5. I heard the do__ open when the mail arrived.
6. Please don't sti__ your tongue out at me.
7. The baby made a qui__ noise.
8. The strong wi__ blew the leaves off the trees.

Section 2: Analyzing Sounds

Directions: For each word below, determine what sound or letter comes immediately before the final /k/ sound. Use that information to correctly spell the ending.

Section 3: Editing and Real-World Application

Directions: Read the short paragraph below. Find the 5 words that are spelled incorrectly (they use the wrong form of 'k' or 'ck'). Circle the incorrect word and rewrite the sentence correctly below.

My nek hurt after riding the train, so I went to the docktor. The weather felt very nick, but the sun was peakick over the horizon. I walked across the brik path to get home.

1. (Incorrect Word: ___)

   Correct Sentence: ___

2. (Incorrect Word: ___)

   Correct Sentence: ___

3. (Incorrect Word: ___)

   Correct Sentence: ___

4. (Incorrect Word: ___)

   Correct Sentence: ___

5. (Incorrect Word: ___)

   Correct Sentence: ___

Challenge Zone: Exceptions and Related Forms

Extension: The 'ck' rule generally applies to one-syllable words and specific syllable types. For words with more than one syllable, especially adjectives ending in the /k/ sound (like fantastik or *electrik), the rule changes. Research or hypothesize the correct ending for these multi-syllable words:

1. The artist's work was *fantasti***

2. The city uses *electri*** power.

3. *Publi*** speaking is difficult for some people.

(Hint: These words often end in the letter 'c', but only when they are multi-syllable words and the 'c' comes immediately after a short vowel.)

Answer Key

Section 1: Applying the Short Vowel Check

1. snack
2. leak (Vowel team 'ea')
3. office (Doesn't apply, 'c' before 'e' makes soft 's' sound, but if this were a hypothetical single syllable: it would be 'k' because the 'c' is not a short vowel)
4. ship (Does not end in /k/ sound)
5. dock (Short 'o')
6. stick (Short 'i')
7. quick (Short 'i')
8. wind (Does not end in /k/ sound)

(Note: For 3, 4, and 8, the student should realize the rule doesn't apply because the word doesn't end in the /k/ sound or the context doesn't fit the 'ck/k' final rule. The best phonetic fits were 5, 6, 7, 1.)

Section 2: Analyzing Sounds

Section 3: Editing and Real-World Application

Incorrect words: nek, docktor, nick, peakick, brik.

1. (Incorrect Word: nek) Correct Sentence: My neck hurt after riding the train, so I went to the doctor.

2. (Incorrect Word: docktor) Correct Sentence: My neck hurt after riding the train, so I went to the doctor.

3. (Incorrect Word: nick) Correct Sentence: The weather felt very nice, but the sun was peaking over the horizon.

4. (Incorrect Word: peakick) Correct Sentence: The weather felt very nice, but the sun was peaking over the horizon.

5. (Incorrect Word: brik) Correct Sentence: I walked across the brick path to get home.

Challenge Zone: Exceptions and Related Forms

1. The artist's work was fantastic.
2. The city uses electric power.
3. Public speaking is difficult for some people.