Now that students have a general understanding of blocking rules, we introduce them to a couple more variations of that concept by continuing with the -ck expectancy. The -ck rule functions the exact same as blocker -dge and copycat -tch but is just a different sound after the vowel. To ‘protect’ the vowel with a /k/ sound following it, we use the letter ‘c’ before the ‘k’ to create the double consonant that ‘blocks’ any tense changes or endings added that could possibly affect the vowel’s function.
By this point the student is fairly familiar with the concept of blockers. The –ck rule should be introduced just as the –tch rule. The only thing that changes is the sound after the vowel.
Tutor: “Now, whenever we have a vowel saying its sound, followed by a /k/ sound we use –ck. Just as with –tch, we are using the C-blocker just in case we add –ed later on (backed vs. baked).