Por si algún profe quiere investigar sobre estas 70 apps y ver si le son de utlidad. Yo uso algunas // The 70 Best Apps For Teachers And Students - Edudemic. These are listed as itunes apps, but I'm sure a lot of them can be found for Android as well.
Alphabet for Starters is our newest alphabet learning series. Like Letter of The Week the goal is to play with letters, and expose our children to them, not to drill or test. Have fun with the letters but only if and when your child shows interest