One thing I do throughout the week is mention over and over what the letter says. "A says ah" I then will say words like apple, ant, animal, ... and ask them or point out that they start with A, because they make the a sound. I made a sheet with most of the words we talked about that week and then found two images per word. I found one and colored it in and N found the other.
They colored parts of an alligator, I cut out and I tried to teach them about glue.
We decorate a letter A with Apple Jacks.