This is a great way to post the alphabet in your classroom. This website also has a ton of wonderful ways to teach the alphabet. This meets standard K.L.1. 1-demonstrate command of the conventions of standard English grammar and usage when writing or speaking.
Set up a simple fine motor activity to work on letter recognition. This letter matching activity can be set up various ways depending on your child's skill level: alphabetical order, uppercase/ lowercase letter recognition, sequencing, etc!