Here's the breakdown:
* Technically, long vowel sounds DO NOT say their name. The letter names like "A," "E," "I," "O," and "U" are different from the sounds they make in words. For example, the long "A" sound in "cake" is not the same as saying the letter "A."
* However, long vowels are often *represented* by the letter's name. This is especially true in spelling rules where a silent "e" at the end of a word indicates a long vowel sound. So, while the sound itself is different, the letter's name is used as a way to write that sound.
Here's a simple example:
* Letter: A
* Name: "ay"
* Long vowel sound: "ay" as in "cake"
So, it's a bit of a grey area. They don't exactly "say their name," but the name of the letter is often used to represent the long vowel sound.