The most common sound of the letter A is the "short" A sound, as in the word apple. To make this sound properly open mouth, tongue down.... just as you are preparing to take a big bite from an apple.

If the sound isn't coming out quite right, remind your child to open wide to receive the big apple!

I like to have my students physically bring their hand to their mouth, pretending that they are going to take a big bite, all while making that proper A sound. /a/ apple