There were 2 editions, one for a Parish setting and one for a school setting. Prototyped in 2012, printed in late 2014.
This is meant to be used in a Sunday-school type setting. The "teacher", known as a Catechist, would have about an hour to get through the chapter.
The teacher's edition is for use in a school setting. Teachers are provided more content because they would have a full week to get through the chapter.