Understand that adding a silent e to the end of a short word makes the vowel say its own name, using cap and cape as the model pair.
Watch what happens when you add one quiet letter to the end of a word. "Cap" has a short a sound. Add an e at the end -- "cape" -- and the a changes! It says its own name: "ay."
That final e does not make its own sound. It is called Silent E. Its job is to reach back over one letter and change the vowel from short to long.
Mastery looks like: They read a_e words correctly, saying the long a, and can explain that the silent e changes the vowel sound.
Common stumbles: Trying to sound out the e as its own sound at the end of the word.
See it visually
Interactive, spoken-aloud tools that show this idea in motion.