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.
FREE printable games for kids to learn how to tell time and read a clock. Features a roll & cover game and a draw the time game. Also featuring a FREE interactive app from TIMEX to practice time-telling concepts.