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.
Meet the monsters that once roamed North America, including the hell pig, the terror bird, and the short-faced bear. These infographics were created by Beth Zaiken as signages for the Natural History Museum.